[1]LI Dan,LIU Dan-dan,ZHAO Jin-xiang.Analysis of Land Use Change in Mountain Area Based on DEM[J].Research of Soil and Water Conservation,2014,21(01):66-70.
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Analysis of Land Use Change in Mountain Area Based on DEM
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
21
Number of periods:
2014 01
Page number:
66-70
Column:
Public date:
2014-02-28
- Title:
- Analysis of Land Use Change in Mountain Area Based on DEM
- Keywords:
- land use; terrain factor; DEM; Zhongxian County
- CLC:
- F311
- DOI:
- -
- Abstract:
- Terrain factor affects land use manner directly and determines the land use type to a certain extent. Taking Zhongxian county of Chongqing a typical mountainous area in southwest as study area. Based on the DEM and remote sensing images, through the establishment of land use remote sensing database, using GIS technology, elevation, slope, aspect was extracted, and made them overlay to land use map to analyze land use change based on different terrain factors from 2000 to 2010 in the study area. The research results show that the terrain factors have the important influence on land use change in the study area, land use change decreases slowly with the increase of elevation and slope, sunny slope is greater than the shady slope, and mainly concentrated in the region that the elevation is 300~600 m, slop is less than 25° and the aspect is half-sunny slope, and the transformation between cultivated land and forest land is the most violent one. There are certain areas of cultivated land and forest land were converted to water in elevation 0~300 m, less than 25° along the Yangtze River and its tributaries. The analysis of relation between land use change and each terrain factors will have benefit to realize the optimization structure of regional land use and the rational distribution of land use types on different terrain, to promote the sustainable development of regional land resources.
- References:
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1900-01-01