Ung dung GIS va VT nghien cuu sat lo dat tai VQGPNKB

KYYEU HQI THAo KHOA HQC GISTRlfONG D~I HQC QUY NHON lrNG DlNG GIS vA VI~N THAM NGHIEN ClrU s~ T LaaAT T~I VU'ON QUOC GIA PHONG NHA KE SANG Trftn Xuan MiJi, VO Van Tri ABSTRACT Nha - Ke B

KYYEU HQI THAo KHOA HQC GIS

TRlfONG D~I HQC QUY NHON

lrNG Dl)NG GIS vA VI~N THAM NGHIEN ClrU s~ T LaaAT T~I VU'ON QUOC

GIA PHONG NHA KE SANG

Trftn Xuan MiJi, VO Van Tri

ABSTRACT

Nha - Ke Bang national park

Landslides are one of the natural hazards that have a great impact on the nature and socio-economicactivities of people Phong Nha - Ke Bang is characterized by steep terrain, divided by river system,heavy rainfall As a result, there isa high risk of landslides, especially mountainous areas with lowvegetation coverage and along the Ho Chi Minh branches West and East highway, 20 road The landslidestudy to develop scenarios to cope with natural disasters is a solution for improving the capacityof management of resources In this study, the input data included: remote sensing data fLandsat,Spot, DEM), terrain map, slope, gradient direction, river density, hydrology, soil type, use

I ! mapSoil, vegetation cover, erosion points and other information maps Each layer of data is assigned

Ilweight corresponding to their importance during landslide A landslide analysis model was built

!I basedon the ArcGIS software tool based on the combined results of all the above thematic classes and theweights of each factor that produced landslide risk prediction maps Classified by 5 levels: very kigh, high, medium, low and very low Research results show that areas with high and very high :tJnds/ideare distributed in areas with unstable geological structure, loose soil, easily weathered, dynamicsof traffic works Research results help to avoid the consequences of landslide caused, the basis/orinfrastructure planning.

Keyword: Landslide, disaster, Phong Nha - Ke Bang

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I

TAl LI:E:U THAM KHAo

Ban qUlm 1y VQG Phong Nha - Ke Bang (2007), H6 sa Di san thien nhien thJ giiri Vuan qu6c gia

7ng Nha - Ke Bang, Quang Binh.

~~.caSo'nghien cUu m6i quan h? giua cdu trUc ilia chdt va ilia hinh, D~ tai NCKH c~p BQ, Vi~n Dja

'dan, Hil Giang su- d',mg cong ngh? viln tham va GIS, D~ tai NCKH dp ca sa, Vi~n Dja Li.

'guYfut Dinh Hoe (2001), Dia chdt moi truirng, Nha xu~t ban D~i hQc QuBc gia Ha NQi, 2001.

'~p chi Thong tin Khoa hQCva Cong ngM Quang Binh, t~p 40(s6 3): 3- 4

I~g aen qua trinh xoi man ildt luu vvc song Be, Tq.p chi Phat tri~n Khoa h9C va Cong ngh?, t~p

14-2011):43 - 44

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nam 20.11, Da Nang

10 Vii T1,lL~p (200.8) EJja ly tll nhien Vi~t Nam, Nha xuAt ban D:;tihQc Qu6c gia, Ha NQi.

and Flood Hazards in Hoa Binh Provine, Scientific report of Project QG-0'0'-17, Ha Noi.

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