[1]XING Ruishen,ZHOU Qigang,LI Hui,et al.Analysis on Spatiotemporal Variations of Land Use Change in Wanzhou District of Three Gorges Reservoir Based on the Terrain Gradient[J].Research of Soil and Water Conservation,2019,26(02):297-304.
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Analysis on Spatiotemporal Variations of Land Use Change in Wanzhou District of Three Gorges Reservoir Based on the Terrain Gradient
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 02
Page number:
297-304
Column:
Public date:
2019-04-28
- Title:
- Analysis on Spatiotemporal Variations of Land Use Change in Wanzhou District of Three Gorges Reservoir Based on the Terrain Gradient
- CLC:
- F301.24
- DOI:
- -
- Abstract:
- We applied the combined methods including GIS and RS technology, land use map changing pattern, terrain position index and topographic distribution index, and used TM image data and DEM data of Wanzhou District from 2000, 2007 and 2014 to gain the knowledge about the land use changes in Wanzhou District. The results showed that woodland and cultivated land were the main land use types which cover 92% of the total area. The reduction rates of cultivated land, woodland, grassland and unused land were 1.08%, 0.33%, 0.04% and 0.01%, respectively, showing the decreasing trend. The growth rates of water area and construction area were 0.64% and 0.81%, respectively, showing the growing trend. The distribution index of cultivated land, water area and construction area in the lower terrain gradient area were greater than 1, indicating that they mainly distributed in the lower terrain gradient area. Meanwhile, the distribution index of grassland in the middle-high terrain gradient area was greater than 1, showing that grassland mainly distributed in the middle-high terrain gradient area. Nevertheless, the distribution index of woodland in the high terrain gradient area was also greater than 1, leading to the fact that woodland mainly lay in high terrain gradient area. Last but not least, the land use change pattern of Wanzhou District had 3 types including the stable type, the early change type and the late change type, the stable type was the main type that covered the area of 332 670.71 hm2, the early change type covered 2 629.44 hm2 and the late change type covered 2 600.57 hm2. The stable type had a uniformly distribution among different terrain gradient areas while the early type and the late type both favored in the lower terrain gradient area. This study can provide references for the sustainable development and utilization of land resources and rational layout of land use planning in the future.
- References:
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1900-01-01