soil carbon sequestration in dryland farming systems

... water containing low carbonates The soil inorganic carbon occurs in carbonate minerals in two forms, i.e calcium carbonate (CaCO3) and dolomite (MgCO3) In tropical highly weathered acid-soils the ... under in table 1 Total soil organic and inorganic carbon pools in world Estimates of soil organic and inorganic carbon pools in world soils given by Eswaran et al., 1993 and studied that the inorganic ... the ability of soil to sustain our lives by improving soil organic carbon Conservation agriculture systems have three guiding principles that can be globally applied: • Minimizing soil disturbance,

Ngày tải lên: 02/07/2020, 23:34

... It is considered a useful soil health indicator since it is involved in maintaining important ecosystem functions in soil including organic carbon (C) accumulation, infiltration capacity, movement ... quality and efficiency soil Carbon sequestration Soil C sequestration is necessary to improving soil quality, increasing use good organization of agronomic input, and advancing world food security ... cropping system in Inceptisols of Indo-Gangetic plains The outcome of the inclusion of pulses improved the total soil organic carbon content It was more in surface soil (0-20 cm) and declined

Ngày tải lên: 27/09/2020, 15:28

... 30 % In the Vietnamese northern highlands, most ethnic minorities still live on subsistence agriculture generally combining permanent rice cultivation in the valley bottoms and shifting farming ... Population and Housing Census (UNFPA2011) Based on information on housing, living conditions, and household amenities, the UNFPA used principle component analysis to obtain an indirect indicator of ... demand, especially to feed the growing pro-cessing industry in round wood As neighboring countries also implemented bans on raw wood exports, the raw material was increasingly supplied by illegal imports

Ngày tải lên: 16/12/2017, 09:37

... refinements towards reducing vulne-rability and adaptation to climate change in rainfed farming systems Keywords Climate Change, Adaptation, Rainfed Farming Systems, A Modeling, Climate Smart Agriculture, ... climate change in sub-Saharan Africa is expected to cause, increases in the incidence of extreme events such as droughts and floods [5]-[9], changes in rainfall intensity [10], increases in desertification ... poor road infrastructure, fluctuating market prices, high costs and late deliveries of farming inputs [21] Coupled with the low presence of systematic early warning systems in place against natural

Ngày tải lên: 13/01/2020, 16:20

... important in global carbon cycling and sequestration1–3 Rates of organic carbon burial in marine coastal wetlands may contribute ~50% of that in global oceans1 Recent global syntheses estimated the carbon ... often dominates the soil input of OC14,20 Isotope mixing calculations in this study showed that mangrove-derived OC was the major source of soil OC in seagrass meadows adjacent to mangrove in the ... δ 13C values (Fig. 5) indicates that soil OC concentration changes as a function of OC accumulation in the soil and the increase in soil OC concentration is due to the input of 13C-depleted organic

Ngày tải lên: 04/12/2022, 15:12

... reactive N in fumigated soil - Ninhydrin reactive N in unfumigated soil MBC g of soil = - x 24 Weight of soil sample Ninhydrin reactive N in fumigated soil - Ninhydrin reactive N in unfumigated soil ... of carbon Any movement of carbon between these carbon pools is called a flux Soil plays a major role in maintaining balance between global carbon cycle through sequestration of atmospheric carbon ... of organic carbon input from plant biomass which is the dominant factor controlling the amount of SMB in soil Reduction in loss of soil organic carbon in conservation tillage and continuous, uniform

Ngày tải lên: 15/05/2020, 12:13

... concentration of bulk soil in the 5−20 cm soil layer, but significantly enhanced the SOC concentration of bulk soil in the 0−5 cm soil layer In the 0−5 cm soil layer, NT treatments significantly increased ... plots were observed within deep soils (30–90 cm soil layer), implying role of INM on C sequestration in deep soils Zheng et al., (2018) observed that the SOC storage in macro-aggregates under ... is a meager variation in structural indices due to paddy rice straw incorporation but influences the soil hydro-physical environment in rice–rice system in clayey soil It increased the hydraulic

Ngày tải lên: 28/09/2020, 17:26

... consist mainly in the reduction of vegetation cover, leading to an increase in soil erosion by wind and water resulting in a displacement of material and to CO2 emissions (Houerou, 1996; Mensching, ... biomass C and soil C increased more in the A mangium stands than in A indica An increase in the increment rate occurs for the Am plantations between 2yr and 5yr, which indicates a faster growing after ... Thang in Binh Thuan Province, Vietnam, with location of sampling plots: NF - Natural forest, P - Plantation, BL - Barren land The study area is located in Bac Binh district, Binh Thuan province, in

Ngày tải lên: 07/05/2024, 03:30

... methylene-blue staining (second bar at each depth) in INTA and CONVB in 1990 CONVB = conventional farming system since 1985 on low-organic matter soil; INTA = integrated farming system since 1985 on ... dynamics of carbon and nutrients, in par-ticular nitrogen, were the focus of the Dutch Programme on Soil Ecology of Arable Farming Systems In this program soil ecosystem functioning in inte-grated ... and the origin of pores in INTA is reminiscent of those in an 18-year-old minimum tillage arable farming system (MTold) that was studied for comparison on the same soil and farm in 1987 (Boersma

Ngày tải lên: 11/08/2014, 15:20

... Relative Increase in C Mineralization after Drying, Fine-Sieving, and Rewetting of Soil Samples in Comparison with Drying/Rewetting Only (%) in Sandy, Loamy, and Clay Grassland Soils and Some Soil ... consistent with our findings: physical protection in smallpores and in aggregates is an important mechanism in fine-textured soils, butnot in coarse-textured soils In coarse-textured soils organic C ... present in small pores and that the increase in C mineralization would give an indication of the amount of C protected inthese small pores The increase in C mineralization decreased in the order

Ngày tải lên: 11/08/2014, 15:20

... (winter/spring) winter rye crop The originalfindings grossly underestimated the biomass of fungi due, in part, to theincomplete extraction of fungal hyphae and computational errors in estimatingtheir ... et al., 1992), (2) the conventional and Trang 2integrated farming trials (Lovinkhoeve site) of the Dutch Programme on soilEcology of Arable Farming Systems (Brussaard et al., 1988; Kooistra et ... of soils The importance of soil biota as causal mechanisms for sustaining thefertility and productivity of soils has been the focus of several major programs on the ecology of arable farming systems

Ngày tải lên: 11/08/2014, 15:20

... for extrapolating to other soil and climate (rainfall) conditions Major uncertainties remain in the biological interactions in the rhizosphere The efficiency of a root system in taking up nutrients ... of mineral N in the topsoil, is not a real problem under these conditions, as the main leaching risk occurs after the growing season The main problem for effective use of organic N pools in the ... temperate zone is that mineralization is too slow in spring In the humid tropics, by contrast, with a net rainfall surplus during most of the growing season, any accumulation of mineral N will be leached

Ngày tải lên: 11/08/2014, 15:20

... 5Mycorrhizal Interactions with Plants and Soil Organisms in Sustainable of sustainability, resulting in a reduction of soil fertility and increased damage by pathogens to cultivated plants In addition, ... observed in the Stizolobium seed-filling stage, followed by a decline in subsequent periods (Table 1) It is well known that when seed filling begins in legumes,there is a great carbon sink affecting ... produced in multiple-cropsystems in many parts of the world, including 90% of beans in Colombia,80% of beans in Brazil, and 60% of maize in all the Latin American tropics.Whatever the crop combinations,

Ngày tải lên: 11/08/2014, 15:20

... Surface Casting as an Index of Earthworm Activity Earthworm activity includes burrowing, ingesting soil, transforming it, andexporting it as casts Activity has previously been described by using biomass ... available on casting activity in the first 3 years afterclearing without the impact of burning Thus it might be that in traditionalsystems a more rapid decline in casting occurs in the first few ... with that in the forest soil Relating the amounts of carbon and nitrogen incorporated in casts to thesoil carbon and nitrogen pool does not reflect the importance of earthwormactivity in other

Ngày tải lên: 11/08/2014, 15:20

... of the remaining existing forests in maintaining the global carbon cycle cannot be understated By bringing current knowledge on carbon sequestration in forest ecosystems together in one place, ... Printed on acid-free paper Springer is part of Springer Science+Business Media (www.springer.com) Foreword Carbon (C) sequestration in forest ecosystems has become an important issue both in ... 17 17 The Natural Dynamic of Carbon in Forest Ecosystems 2.1 Carbon Input into Forest Ecosystems 2.1.1 Carbon Assimilation 2.1.2 Influx of Gaseous Carbon Compounds 2.1.3...

Ngày tải lên: 28/03/2014, 10:20

... significantly decreased soil compaction The beneficial effects of litter-fall on decreasing compaction was greatest on surface soil Conclusions…… The COX stock increased linearly in surface soil compared ... surface soil compared to a non-linear increase in subsurface soil However, both CNOX and CT stocks increased quadratically over time Summing the C content over soil depth, the profile-wise accumulation ... plantations were raised as a secondary forest in the Indian state of Tripura since 1975 to improve degraded lands, generate income for locals, and meet increasing demand for rubber It is expected that...

Ngày tải lên: 31/03/2014, 09:21

... • • • • Increase in average temperature in Europe Decrease in rainfall in Southern Europe Increase in rainfall in Northern Europe Possible increase in the frequency of heavy rainfall events across ... to agricultural soils within organic farming practices, very few data are present in the literature up to now on its capacity for a net sequestration of organic carbon in soil Soils under maize ... compounds in soil The MESCOSAGR project was intended to field prove the validity of this innovative technology in order to introduce it as a routine agronomic practice to enhance carbon sequestration in...

Ngày tải lên: 29/05/2014, 14:41

... resulting in elevated soil moisture only in the immediate days following a rain event, limiting the access of organisms to resources that may be available in the soil or maintaining them in periods ... a pulse, including: seasonal precipitation affects initial soil moisture; inter-annual variation in pulses (pulse history) influencing soil resources; soil texture alters water infiltration and ... affect carbon cycling in soils at different temporal scales A primary goal of this research is to generate data to be used in predictive modeling exercises of soil respiration in water limited ecosystems...

Ngày tải lên: 13/11/2014, 09:11

... environmental reason, such as helping to maintain food security and secure land tenure in developing countries, increasing farm income, restoring and maintaining above-ground and below-ground ... term Carbon sequestration by soil due to reduction in CH4 soil sink Furthermore, using soil in the study would result in a complex system of photobioreactor, thus requiring complex modeling and ... animals, and mankind to live, the level of GHG in the atmosphere has significantly increased since the pre industrial time causing a rise in the Earth’s temperature For instance: carbon dioxide...

Ngày tải lên: 07/10/2015, 10:10

... environmental reason, such as helping to maintain food security and secure land tenure in developing countries, increasing farm income, restoring and maintaining above-ground and below-ground ... term Carbon sequestration by soil due to reduction in CH4 soil sink Furthermore, using soil in the study would result in a complex system of photobioreactor, thus requiring complex modeling and ... animals, and mankind to live, the level of GHG in the atmosphere has significantly increased since the pre industrial time causing a rise in the Earth’s temperature For instance: carbon dioxide...

Ngày tải lên: 13/10/2015, 15:54