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See also: Ecology; Ecosystems; Forestry; Forests; Land management; Multiple-use approach; Sustainable de-velopment; Timber industry; Wood and timber.. Category: Organizations, agencies,

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Forest regulation is the process of determining the

ap-propriate size and age structure of the forest over a

large area to ensure the continued production of

re-source values in perpetuity Regulation also refers to

the process of organizing a forest to meet social and

economic goals and constraints One such

require-ment may be to produce a relatively even flow of forest

products over time; another may be to ensure a

con-tinued supply of high-quality water from a municipal

watershed An industrial forest manager may be

re-quired to produce a certain level of fiber to supply a

billion-dollar mill employing hundreds of people

The appropriate size and age distributions of trees to

best achieve this goal may be quite different from

those required to maximize the habitat for a

particu-lar animal species

Biological and Ecological Considerations

Physical, chemical, and climatic factors place limits

on both the types of plants and animals that can

in-habit an area and their productive potential Forest

managers must recognize and be able to develop

pos-sible management alternatives given the biological

and ecological characteristics of an area These define

the types and mix of products and values that may

be produced Managers must work within these limits

to determine the appropriate mix to best meet

man-agement goals For every resource, it is important to

determine appropriate production levels to ensure

sustainable production over the long term while

maintaining ecosystem structure and function This is

complicated by the fact that production is measured

in different units for different resources For water, it

may be the annual volume of water per year from a

wa-tershed that meets certain quality standards For

wild-life it may be the population levels an area can sustain

Integration

Forest management, therefore, deals with the

integra-tion of biological and ecological potential with

hu-man economic and social goals and objectives Some

forested areas are managed to produce a mix of

com-modities and services, while others are managed to

maximize the production of a single item Designated

wilderness areas, national parks, and national wildlife

refuges, for example, are all managed largely to

opti-mize the production of a relatively narrow set of

sources, but they still produce a mix of other

re-sources Forest managers are concerned with the

production of the whole range of resources from for-est ecosystems in such a way as to maintain ecosystem structure and function in perpetuity

David D Reed

Further Reading

Barnes, Burton V., et al Forest Ecology 4th ed New

York: Wiley, 1998

Bettinger, Peter, et al Forest Management and Planning.

Boston: Academic Press/Elsevier, 2009

Davis, Lawrence S., et al Forest Management: To Sustain Ecological, Economic, and Social Values 4th ed

Bos-ton: McGraw-Hill, 2001

Food and Agriculture Organization of the United

Na-tions Global Forest Resources Assessment 2005: Progress Towards Sustainable Forest Management Rome:

Au-thor, 2006

Gane, Michael Forest Strategy: Strategic Management and Sustainable Development for the Forest Sector

Dor-drecht, the Netherlands: Springer, 2007

Humphreys, David Logjam: Deforestation and the Crisis

of Global Governance Sterling, Va.: Earthscan, 2006 Hunter, Malcolm L., Jr Wildlife, Forests, and Forestry: Principles of Managing Forests for Biological Diversity.

Illustrated by Diane Bowman Englewood Cliffs, N.J.: Prentice-Hall, 1990

Nyland, Ralph D Silviculture: Concepts and Applications.

2d ed Boston: McGraw-Hill, 2002

Sauer, Leslie Jones, and Andropogon Associates The Once and Future Forest: A Guide to Forest Restoration Strategies Washington, D.C.: Island Press, 1998 Smith, David M., et al The Practice of Silviculture: Ap-plied Forest Ecology 9th ed New York: Wiley, 1997.

See also: Ecology; Ecosystems; Forestry; Forests; Land management; Multiple-use approach; Sustainable de-velopment; Timber industry; Wood and timber

Forest Service, U.S.

Category: Organizations, agencies, and programs Date: Established as Division of Forestry, 1897; renamed United States Forest Service, 1905

The United States Forest Service manages and con-serves U.S national forestlands and grasslands with

a mission of ensuring resource use by the public for rec-reation and by industry for logging and ranching The

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U.S Forest Service is a recognized international leader

in forest and ecosystem research and in natural

re-source protection and conservation and serves as a

model for similar agencies in developing nations.

Background

The U.S Forest Service, a division of the U.S

Depart-ment of Agriculture, is responsible for managing

ap-proximately 77 million hectares of national forest as

well as 1.6 million hectares of grassland located in

forty-four states, Puerto Rico, and the Virgin Islands

The agency’s history dates back to the early 1890’s,

when President Grover Cleveland proclaimed

seven-teen federal forest reserves, totaling 7,087,500

hect-ares In the nineteenth century, the timber industry

had become notorious for stripping an area of all its

marketable timber and then moving on, leaving

be-hind a barren, eroded landscape and deserted towns

At the beginning of the nineteenth century, the forest

resources of the North American continent appeared

so inexhaustible that the forest products industry

gave little thought to conserving forests or practicing

what is now known as sustainable forestry By the

1880’s, however, the fact that forest reserves were

dis-appearing was clear Public concerns about excessive

harvesting contributed to fears that the nation’s

sup-ply of timber would be exhausted before the turn of

the century Conservation leagues formed, and

news-papers and magazines of the time published

numer-ous articles warning of a coming timber famine

One of President Cleveland’s final acts as president

in 1897 was to sign legislation providing funding for

the administration of the reserves and creating the

Di-vision of Forestry within the Department of the

Inte-rior Not all members of the public supported the

Di-vision of Forestry’s creation: Many business interests

responded to the initial creation of the federal forest

reserves by urging that President Cleveland be

im-peached The act stood, however, and in 1905,

respon-sibility for the federal forest reserves was transferred

from the Department of the Interior to the

Depart-ment of Agriculture At that time the agency’s name

changed from the Division of Forestry to the United

States Forest Service

President Theodore Roosevelt appointed a

per-sonal friend, renowned forester and conservation

ad-vocate Gifford Pinchot, to serve as the agency’s first

director Pinchot had studied forestry in France,

where forests had been managed for hundreds of

years, and had also observed forestry practices in

other European countries The initial mission of the U.S Forest Service was to conserve forest resources for future generations and to protect the nation’s watersheds and riverways by preventing erosion That

is, the U.S Forest Service attempted to manage the forest reserves in a way that would allow for both sustained-yield harvesting and the prevention of soil run-off from hillsides into waterways One of the con-sequences of excessive timber harvesting was heavy silt deposits that choked formerly navigable rivers Rain falling on forested hillsides is slowed or absorbed

by vegetation; rain falling on barren hillsides tends to run off quickly, washing soil with it and contributing

to both erosion and flooding

Impact on Resource Use Under Pinchot, the U.S Forest Service practiced for-est management that allowed for harvfor-esting in a man-ner that attempted both to be ecologically sound and

to create a solid economic base for logging towns Sustained-yield harvesting would allow permanent communities to grow; families could flourish as lum-bering and related industries provided stable, year-round employment

In addition to managing forest reserves, the U.S Forest Service established regional research stations

to investigate issues such as silviculture, reforestation, fire suppression, and harvesting practices Although referred to as stations, the locations of research ef-forts were not actually centralized but instead took place in a variety of settings, including controlled lab-oratory environments and forests The U.S Forest Service also supported research performed by scien-tists at universities by funding grants and participat-ing in cooperative research agreements with acade-mia and industry Research conducted or supported

by the Forest Service has led to a better understanding

of forest ecology and to subsequent changes in man-agement by both government agencies and private in-dustry Research continued into the twenty-first cen-tury with activities such as the Forest Inventory and Analysis program, which conducts research on both public and private lands to assess the conditions of U.S forests and to detect future trends

The U.S Forest Service is also responsible for over-seeing twenty national grasslands National grasslands were established during the Great Depression of the 1930’s, when the Great Plains were devastated by the Dust Bowl, an ecological disaster caused by a combi-nation of drought and farming practices unsuited for

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a prairie ecosystem Farmers especially were affected

by the country’s economic woes, resulting in

thou-sands of farms being abandoned by farmers unable to

make mortgage payments or pay property taxes As

part of national relief efforts, the federal government

acquired millions of hectares of submarginal

farm-land that included both forest tracts and grassfarm-lands

Land more suited for forests than for farming was

in-corporated into national forests, such as the Oconee

National Forest in Georgia, and planted with trees

Prairie lands were restored to grasslands, such as

Buf-falo Gap National Grassland in South Dakota

Be-cause land for many forests was often acquired in

small, noncontiguous blocks as it became available

rather than through condemnation, many forests and

grasslands remain a patchwork of private and public

ownership with irregular boundaries Like national

forests, national grasslands are managed for multiple

use, including recreation, wildlife habitat, and

live-stock forage

Also in the 1930’s, the U.S Forest Service began to

provide more recreational opportunities in national

forests Civilian Conservation Corps members

devel-oped campgrounds, picnic areas, and hiking trails

The agency also instituted leasing programs that

al-lowed the public to lease lots within national forests

on which they could build recreational cabins for

sea-sonal use The U.S Forest Service provided

guide-lines that set size limits and specified the materials,

such as types of exterior siding, that could be used

Al-though these recreational opportunities were viewed

originally as secondary to the agency’s primary

mis-sion of ensuring a sustainable timber supply, over time

recreation assumed a more important role As the

threat of a timber famine faded, the public’s

under-standing of forest conservation and the appropriate

role of the U.S Forest Service changed

This change has been reflected in significant

pieces of twentieth century federal legislation, such as

the Wilderness Act (1964), the National

Environmen-tal Policy Act (1970), and the National Forest

Manage-ment Act (1976) Congress originally created the

For-est Service for conservation, that is, to promote the

wise use of forest resources Subsequent legislation

has resulted in the Forest Service becoming a diverse

agency with multiple missions relating to natural and

cultural resources in the United States The National

Forest Management Act in particular redefined the

agency’s mission by making multiple use an explicit

rather than an implicit requirement In the

twenty-first century, in addition to managing forests for a sus-tained yield available to the commercial forest prod-ucts industry, the Forest Service also is charged with protecting critical wildlife habitat, providing outdoor recreational opportunities for the general public, and protecting cultural resources, such as historic build-ings or archaeological sites, that fall within national forest boundaries

Thus the Forest Service is occasionally embroiled in controversy when one mission, such as providing rec-reational opportunities for the public, conflicts with other missions, such as protecting critical habitat for endangered species Nonetheless, as part of the De-partment of Agriculture, the Forest Service still over-sees national forests as reserves of timber which have been set aside for eventual sale to private industry For administrative purposes the U.S Forest Service

is divided into ten geographic regions The bound-aries for these regions have changed over time to re-flect changes in administration policies and goals Similarly, improvements in office automation, com-munications, and transportation technology have led

to management of individual forests becoming more centralized In Wisconsin, for example, the formerly separate Nicolet National Forest and Chequamegon National Forest are now managed as the Chequa-megon-Nicolet National Forest, while in Texas four national forests (the Angelina, Davy Crockett, Sabine, and Sam Houston) and two grasslands (Caddo and LBJ) are supervised from a central office

Nancy Farm Männikkö

Further Reading

Arnold, R Keith, et al View from the Top: Forest Service Re-search Durham, N.C.: Forest History Society, 1994 Clary, David A Timber and the Forest Service Lawrence:

University of Kansas Press, 1986

Lewis, James G The Forest Service and the Greatest Good:

A Centennial History Durham, N.C.: Forest History

Society, 2005

Steen, Harold K Origins of the National Forests: A Cen-tennial Symposium Durham, N.C.: Forest History

Society, 1992

Web Site U.S Forest Service http://www.fs.fed.us See also: Conservation; Forestry; Forests; Multiple-use approach; Pinchot, Gifford; Timber industry

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Category: Environment, conservation, and

resource management

Billions of people, industrialists, and the economies

of many nations rely on forests, which cover

approxi-mately 30 percent of the world’s landmass The

prac-tice of forestry can ensure that there will be sustainable

forests to support all living things with timber and

wood products, energy resources, animal ranges,

wild-life habitats, recreational opportunities, water

re-sources, oxygen, and climate control.

Background

Forestry, considered both a science and an art, has its

origins in China, while the Western world formalized

the practice of forestry during the Middle Ages By the

sixteenth century, Germany and Japan were leaders

in developing systematic forest management, and

German foresters established many of the earliest

forestry schools in the eighteenth and nineteenth

centuries Royalty often promoted forest management

through mapping, harvesting, and reforestation An

example of such early forestry practices was Great

Britain’s Broad Arrow Policy of 1691, which required

reservation for the navy of all trees on public lands

with a diameter of 60 centimeters or greater These

trees were used in large part for building ship masts—

one of the significant commercial enterprises that

made use of forest products in the seventeenth

cen-tury

The German influence was felt in North America

by 1898, when German Carl Schenck established one

of the first American schools of forestry in North

Car-olina The New York State College of Forestry was also

established at Cornell University in the same year

Schenck, who initially came to the United States to

re-place Gifford Pinchot in managing the forests of the

Biltmore Estate in Asheville, North Carolina, utilized

many of the German forestry methods in his

educa-tion program Pinchot, who was trained in France, was

appointed by President William McKinley as the head

of what became known as the United States Forest

Service

The Beginnings of Forestry

Initially, forestry involved finding ways to cultivate

trees and plant materials quickly because of the

deple-tion of wood products caused by war but also necessi-tated by the spread of settlements throughout the world People used wood not only for construction of buildings and fences but also as the main source of en-ergy Thus, as population increased, the demand for wood products increased The settlers in the New World began shipping substantial amounts of logs and lumber to the Old World, where many forests had already been depleted, often as a result of practices such as clear-cutting—the cutting of all trees in a stand with little concern for underlying plants, soil, and water resources

As the population in the United States spread in the eighteenth and nineteenth centuries from New England south through the Appalachian forests and west to the forests surrounding the Great Lakes, early settlers practiced little forest management or conser-vation Most of the settlers believed there was an end-less supply of trees; not until the second half of the nineteenth century did influential politicians and au-thors begin to advocate for forest management and conservation However, the United States did little to manage its forests until after many trees had been clear-cut for commercial purposes, including build-ing railroads, and soil had been degraded through erosion

The scientific methods employed in early forestry involved managing and improving existing forests through cutting, pruning, and thinning of forests and controlling erosion, diseases, and pests To foster for-est continuity, loggers modified their previous “cut out and get out” approach to logging and also applied science in order to protect the soil, water, and young trees in areas where timber harvesting was taking place Many of these early scientific methods are still practiced In addition, during the nineteenth and twentieth centuries, many nations began to adopt laws and regulations to conserve forests, protect wa-tersheds, and establish forest reserves In many cases, these laws were a reaction to the commercial slash-and-burn practices of the past and the technologies being employed by the logging and paper industries

As the nineteenth century began, Pinchot philoso-phized that forests could be used wisely while also be-ing preserved for the enjoyment of future genera-tions This multiple-use philosophy, that there can

be a balance between economic and environmental factors to meet both present and future needs, is known as sustainable forestry The debate, however, continues in modern forestry—should forests be

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served or managed for commercial timber

produc-tion?

Modern Forestry Practices

Modern forestry not only employs the early scientific

methods and management practices but also utilizes

many new mechanized and science-based techniques

Today’s foresters use tools such as portable computers

to maintain and organize forest inventory databases

and to generate financial and harvest-yield models

Forest scientists link computer mapping technologies

with satellite resources such as geographic

informa-tion systems that allow remote sensing Combining

mapping and sensing data allows evaluation of

for-ests, such as insect damage, forest erosion, and

po-tential harvest yields throughout the globe Global

Positioning Systems are also important in pinpointing

exact locations of forest resources that may have been

identified through aerial photography or remote-sensing technologies

Today’s forest management also involves special-ization Silviculture is the main specialty that con-cerns management of forests and their surroundings

to establish healthy tree populations and plant mate-rials for commercial harvesting Silviculturalists de-velop forest management plans in order to ensure healthy and profitable yields, while recognizing that forests are in constant states of change, which is known

as succession In addition, genetic engineers are con-ducting global research to improve species that can withstand pests, diseases, and drought in specific geo-graphic areas Controlled or prescribed forest burn-ing to reduce the amount of fuel available for fires, soil conservation and watershed management to en-sure that soils are adequate to support a forest and to prevent soil erosion, protection of forest ecosystems

A forest employee uses a chainsaw to clear a felled tree (©iStockphoto.com)

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and biodiversity enhancement, water quality

manage-ment and pollution control, pest and disease control,

and climate control by ensuring sufficient plant

mate-rials to create a sink for atmospheric carbon dioxide

and oxygen restoration through photosynthesis are

all prominent features of modern-day forestry

prac-tice and education

The commercial enterprise of plantation forestry,

much like single-crop farming, involves establishing

monocultures or single varieties of trees and plant

ma-terials usually started from seeds or seedlings

Christ-mas tree farms and nurseries are examples of

planta-tion forestry Urban forestry is practiced in highly

populated areas where urban living environments are

enhanced through the creation of green spaces and

the planting of shade tree species and other plant

ma-terials appropriate for a geographic location

An-other specialty branch of forestry is tropical forestry,

which takes place in equatorial forests and involves

harvesting of woods popular in furniture

manufactur-ing, such as mahogany and teak

Commerce vs Preservation

Forests have substantial commercial value not only for

wood and paper products such as plywood and as a

re-newable energy source but also for many

manufac-tured products that are derived from trees and plant

materials Many of these manufactured products

be-gin with a wood source that is turned into a useful

product through the application of chemicals These

products include rayon, cellophane, adhesives, photo

film, paints, household cleaners, baby food, ice cream,

cosmetics, and food flavorings Many pharmaceutical

products also come from forest sources Economics is

important in forestry, and foresters must have an

un-derstanding of how to ensure that forest products will

have sufficient quantity and quality to maintain a

prof-itable business

Global forestry initiatives have taken place for many

years The World Forestry Congress has met almost

every six years since 1926, and the 2009 meeting in

Buenos Aires, Argentina, concerned ways to achieve

a balance between preserving tropical rain forests

and allowing for development Moreover, since the

1980’s, many international entities, including the

United Nations, the World Bank, and the European

Forest Institute, have begun to formulate and

imple-ment global conservation-oriented forestry strategies

and initiatives

However, not all of the world leaders agree that

conservation is the best policy, as national develop-ment varies globally from hunter-gatherer societies to industrialized nations that place an emphasis on the commercial value of forest products Many develop-ing nations believe in maximum use of their forests to fuel their development in the same manner that in-dustrialized nations overused their forests to enhance their economies Although overuse of forests and lack

of forest management in one area of the globe will impact other areas, the many international agencies trying to resolve the global forestry debate between deforestation for economic development and preser-vation are not likely to come to an easy resolution

Carol A Rolf

Further Reading

Achard, Frédéric Vital Forest Graphics Nairobi, Kenya:

United Nations Environment Programme, 2009

Berger, John J Forests Forever: Their Ecology, Restoration, and Protection Chicago: Center for American Places,

2008

Burton, L DeVere Introduction to Forestry Science 2d

ed Clifton Park, N.Y.: Thomson Delmar Learning, 2008

Dietrich, William The Final Forest: The Battle for the Last Great Trees of the Pacific Northwest New York:

Pen-guin, 1993

Lele, Uma, ed Managing a Global Resource: Challenges of Forest Conservation and Development World Bank

Se-ries on Management and Development, Volume 5 New Brunswick, N.J.: Transaction, 2002

McEvoy, Thomas J Positive Impact Forestry: A Sustain-able Approach to Managing Woodlands Covelo, Calif.:

Island Press, 2004

Morsbach, Hans W Common Sense Forestry White River

Junction, Vt.: Chelsea Green, 2002

Palo, Matti, and Jussi Uusivuori World Forests, Society, and Environment Boston: Kluwer Academic, 1999 Perry, David A., Ram Oren, and Stephen C Hart For-est Ecosystems 2d ed Baltimore: Johns Hopkins

Uni-versity Press, 2008

Web Sites European Forest Institute http://www.efi.int/portal/

Food and Agriculture Organization of the United Nations

Forestry Information Centre http://www.fao.org/forestry/library/en/

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See also: Forest management; Forest Service, U.S.;

Forests; Multiple-use approach; Pinchot, Gifford;

Timber industry; Wood and charcoal as fuel

re-sources; Wood and timber

Forests

Category: Plant and animal resources

Forests are complex ecosystems in which trees are the

dominant type of plant Both humans and animals

de-pend on forests for food, shelter, and other resources.

Background

Forests once covered much of the world and are still

found from the equator to the Arctic regions A forest

may vary in size from only a few hectares to thousands

of square kilometers, but generally any natural area in

which trees are the dominant plant type can be

con-sidered a forest For a plant to be called a tree, the

standard definition requires that the plant must attain

a mature height of at least 2.4 meters, have a woody

stem, and possess a distinct crown Thus, even though

apples and roses are otherwise close botanical

rela-tives, size dictates that roses grow on shrubs and apples

grow on trees

Tropical, Temperate, and Boreal Forests

Foresters generally divide the forests of the world

into three general categories: tropical, temperate,

and boreal (See “Rain forests” for a discussion of

the tropical rain forest.) In brief, the tropical forest

consists of a dizzying variety of trees that remain green

year-round, shrubs, and other plants The growth is

lush and usually includes both a dense canopy formed

by the crowns of the largest trees and a thick

under-story of smaller trees and shrubs Growth is often

con-tinuous, rather than broken into periods of dormancy

and active growth, so that fruiting trees are

occasion-ally seen bearing blossoms and mature fruit

simulta-neously

The temperate forest lies between the tropical

for-est and the boreal, or northern, forfor-est The forfor-ests

of the Mediterranean region of Europe as well as the

forests of the southern United States are temperate

forests Trees in temperate forests can be either

decid-uous or coniferous Although coniferous trees are

generally thought of as evergreen, the distinction

between types is actually based on seed production and leaf shape Coniferous trees, such as spruces, pines, and hemlocks, produce seeds in cones and have needle-shaped leaves Deciduous trees, such as maples, poplars, and oaks, have broad leaves and bear seeds in other ways Some conifers, such as tamarack,

do change color and drop their needles in the au-tumn, while some deciduous trees, particularly in the more southerly regions of the temperate forest, are evergreen Deciduous trees are also referred to as hardwoods, while conifers are softwoods, a classifica-tion that refers more to the typical density of the wood than how difficult it is to nail into it Softwoods are lower in density and will generally float in water while still green Hardwoods are higher in density on aver-age and will sink

Like the tropical forest, the temperate forest can

be quite lush While the dominant species vary from area to area, depending on factors such as soil types and available rainfall, a dense understory of shade-tolerant species often thrives beneath the canopy formed by taller trees Thus, a mature temperate forest may have thick stands of rhododendrons 6

to 9 meters high thriving in the shade of 25-meter oaks and tulip poplars As the temperate forest ap-proaches the edges of its range and the forest makes the transition to boreal, the understory thins out, disappearing almost completely or consisting only

of low shrubs Even in temperate forests, the domi-nant species may prevent an understory from form-ing Stands of southern loblolly pine, for example, often have a parklike feel as the thick mulch cre-ated by fallen needles chokes out growth by other species

The boreal forest, which lies in a band across the northern United States, Canada, northern Europe, and northern Asia, is primarily a coniferous forest The dominant species are trees such as white spruce, hemlock, and white pine Mixed stands of north-ern hardwoods, such as birch, sugar maple, and red oak, may be found along the southern reaches of the boreal forest As the forest approaches the Arctic, trees are fewer in type, becoming primarily spruce, birch, and willows, and smaller in size The under-story is generally thin or nonexistent, consisting of seedlings of shade-tolerant species, such as maple, and low shrubs Patches of boreal-type forest can be found quite far south in higher elevations in the United States, such as the mountains of West Vir-ginia, while the edge of the temperate forest has

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crept steadily northward following the retreat of the

glaciers at the end of the Ice Age twenty thousand

years ago

Forest Ecology and Resources

In all three types of forests a complex system of

inter-relationship governs the ecological well-being of the

forest and its inhabitants Trees and animals alike

have evolved to fit into particular environmental

niches Some wildlife may need one resource

pro-vided by one species of tree in the forest during one

season and a resource provided by another during a

different time of year, while other animals become

to-tally dependent on one specific tree Whitetail deer,

for example, browse on maple leaves in the summer,

build reserves of fat by eating acorns in the fall, and

survive the winter by eating evergreens Deer are highly adaptable in contrast with other species, such

as the Australian koala, which depends entirely on eu-calyptus leaves for its nutritional needs Just as the ani-mals depend on the forest, the forest depends on the animals to disperse seeds and thin new growth Cer-tain plant seeds, in fact, will not sprout until being abraded as they pass through the digestive tracts of birds

Humans also rely on the forest for food, fuel, shel-ter, and other products Forests provide wood for fuel and construction, fibers for paper, and chemicals for thousands of products often not immediately rec-ognized as deriving from the forest, such as plastics and textiles In addition, through the process of tran-spiration, forests regulate the climate by releasing

Forest Areas by Region

Asia/Oceania, 16.4%

(565 million hectares;

1,396 million acres)

Africa, 15.1%

(520 million hectares;

1,284 million acres)

Latin America and the Caribbean, 27.5%

(950 million hectares;

2,347 million acres)

1995: total area = 3,454 million hectares; 8,533 million acres

Europe, 4.2%

(146 million hectares;

361 million acres)

temperate/boreal North America, 13.2%

(457 million hectares;

1,129 million acres)

former USSR, 23.6%

(816 million hectares;

2,016 million acres)

Source: Data are from United Nations Food and Agriculture Organization (FAOSTAT Database, 2000).

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water vapor into the atmosphere while removing

harmful carbon compounds Forests play an

impor-tant role in the hydrology of a watershed Rain that

falls on a forest will be slowed in its passage downhill

and is often absorbed into the soil rather than

run-ning off into lakes and rivers Thus, forests can

moder-ate the effects of severe storms, reducing the

dan-gers of flooding and preventing soil erosion along

streams and riverbanks

Threats to the Forest

The primary threat to maintaining healthy forests

around the world is the rising rate of human

popula-tion growth As the populapopula-tion grows, three types of

pressure are placed on the existing forest First,

for-ests are cleared to provide land for agriculture or for

the construction of new homes This process has

oc-curred almost continuously in the temperate regions

for thousands of years, but it did not become common

in tropical regions until the twentieth century Often

settlers level the forest and burn the fallen trees to

clear land for farming without the wood itself being

utilized in any way Developers tend to see the forest as

a nuisance to be removed as quickly as possible As a

result, the exposed land often becomes infertile for

farming within a few years After a few years of steadily

diminishing crops, the land is abandoned With the

protective forest cover removed, it may quickly

be-come a barren, eroded wasteland

Second, rising populations in developing nations

often depend on wood or charcoal as their primary

fuel for cooking and for home heat Forests are

de-stroyed as mature trees are removed for fuel wood

faster than natural growth can replace them As the

mature trees disappear, younger and younger growth

is also removed, and eventually the forest is gone

com-pletely

Finally, growing populations naturally demand

more products derived from wood, which can include

everything from lumber for construction to

chemi-cals used in cancer research Market forces can drive

forest products companies to harvest more trees than

is ecologically sound as stockholders focus on

short-term individual profits rather than long-short-term

envi-ronmental costs The challenge to foresters,

ecolo-gists, and other scientists is to devise methods that

allow humanity to continue to utilize the forest

re-sources we need to survive without destroying the

forests as complete and healthy ecosystems

Nancy Farm Männikkö

Further Reading Food and Agriculture Organization of the United

Na-tions Forests and Energy: Key Issues Rome: Author,

2008

_ Global Forest Resources Assessment 2005: Prog-ress Towards Sustainable Forest Management Rome:

Author, 2006

Holland, I I., and G L Rolfe Forests and Forestry 5th

ed Danville, Ill.: Interstate Publishers, 1997

Kimmins, Hamish Balancing Act: Environmental Issues

in Forestry Vancouver: University of British

Colum-bia Press, 1992

Nyland, Ralph D Silviculture: Concepts and Applications.

2d ed Boston: McGraw-Hill, 2002

Page, Jake Forest Alexandria, Va.: Time-Life Books,

1983

Sands, Roger Forestry in a Global Context Cambridge,

Mass.: CABI, 2005

Sharpe, Grant W., John C Hendee, and Wenonah F

Sharpe Introduction to Forests and Renewable Re-sources 7th ed Boston: McGraw-Hill Higher

Educa-tion, 2003

Walker, Laurence C., and Brian P Oswald The South-ern Forest: Geography, Ecology, and Silviculture Rev.

ed Boca Raton, Fla.: CRC Press, 2000

Web Sites Environment Canada Welcome to the Western Boreal Conservation Initiative

http://www.pnr-rpn.ec.gc.ca/nature/ecosystems/ wbci-icbo/index.en.html

Natural Resources Canada Canada’s Forests

http://canadaforests.nrcan.gc.ca/?lang=en U.S Forest Service

Forest Inventory and Analysis National Program http://www.fia.fs.fed.us

U.S Geological Survey Forest Ecosystems

http://www.usgs.gov/science/

science.php?term=410 See also: Clear-cutting; Deforestation; Forest fires; Forest management; Forestry; Hydrology and the hydrologic cycle; Rain forests; Reforestation; Timber industry; Wood and charcoal as fuel resources; Wood and timber

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Categories: Countries; government and resources

France ranks regularly among the top five countries in

the global production of wheat and other cereals, sugar

beets, potatoes, and wine grapes because of its rich

soils France also exports significant amounts of

vege-tables, beef, and dairy products as well as some timber

and fish.

The Country

France benefits from its geographic location between

northern and southern Europe, possessing coastal

openings on both the Atlantic Ocean and the

Medi-terranean Sea The river systems of the Seine, Loire,

Garonne, and Rhone favor interior communication,

with only the Massif Central considered an internal

natural obstacle Although France has limited

min-eral resources, it has abundant fertile soils, receives

ample rainfall, and has an equable climate

His-torically, the nation has been known for its

agricul-tural products

After World War II, however, France industrialized

rapidly under extensive governmental promotion of

such development, and in the twenty-first century the

French are recognized for their high-tech products

in such areas as public transportation, defense, and

power generation Among European countries,

France ranks the lowest in the material intensity

mea-sure of its gross domestic product (GDP)—at 0.7

kilo-gram per euro—which some researchers believe is a

measure of technological and environmental

effi-ciency but also reflects the service and agricultural

orientation of France’s mixed economy

In 2008, France had the eighth largest GDP in the

world—measured in terms of purchasing power

par-ity—at $2.1 trillion, with 20 percent coming from the

production of items such as machinery, chemicals,

pharmaceuticals, automobiles, metallurgical

materi-als, aircraft, electronics, textiles, and beverages A

little more than 2 percent comes from agriculture

(in-cluding wheat and other cereals, sugar beets,

pota-toes, and wine grapes), beef, dairy products, and fish

The global recession of 2008 slowed French GDP

growth to 0.7 percent, with an estimated−8 percent in

industrial production France is one of the world’s

most popular tourist destinations, attracting

approxi-mately 75 million foreign visitors every year

Minerals and Ores The mining sector, which began declining in the 1990’s, typically contributes around 7 percent to the French GDP and employs less than 1 percent of the workforce In 2006, France produced an estimated 13 million metric tons of stone, sand, and gravel; 21 mil-lion metric tons of hydraulic cement; 9.4 milmil-lion met-ric tons of salt (rock, refined brine, marine, and in so-lution); 3.5 million metric tons of crude gypsum and anhydrite; 300,000 metric tons of marketable kaolin and kaolinitic clay; 650,000 metric tons of crude feld-spar; 40,000 metric tons of marketable fluorfeld-spar; 30,000 metric tons of barite; 65,000 metric tons of kyanite, andalusite, and related materials; 20,000 met-ric tons of mica; and 420,000 metmet-ric tons of crude talc France has also mined copper, gold, silver, powder tungsten, sponge zirconium, elemental bromine, ball and refractory clays, diatomite, lime, nitrogen, and iron oxide pigments as well as thomas slag phos-phates, pumice (pozzolan and lapilli), and soda ash and sodium sulfate

Phosphorous iron deposits found along the Moselle

in Lorraine constitute the largest vein in Western Eu-rope They once produced 50 million metric tons per year but were increasingly hard to exploit profitably; the last mine was closed in 1998 Bauxite, discovered in the village of Les Baux in Provence, also was once mined extensively, but the deposits are nearly exhausted, and France ceased production in 1993 Similarly, potas-sium carbonate (potash), important in the production

of fertilizer, once came abundantly from the mines of Alsace, but production was stopped because of ecologi-cal concerns and the depletion of the resource During

a decade of neoliberal policies, the government ceased subsidizing unprofitable operations In 2000, mining production in France was 76 percent of what it was in the 1990’s In fact, since 1985, the European Union as

a whole has imported more industrial minerals and ores, including fossil fuels, than it has extracted Nevertheless, from 2003 to 2007, the French metal and mining industries grew by 5.5 percent because of concerns about foreign dependency for certain alloys and ores needed in industrial production In 2007, companies in heavy industry reached a total value of

$19 billion and were forecast to continue to grow into the next decade Sales of iron and steel—including crude steel, pig iron, and direct reduced iron— accounted for 87 percent of the industry’s overall value Other metal and mineral products include alu-minum, composing 7 percent of total revenues in the

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