Assessment on Terrain Conditions of Cultivated Land Based on DEM in Xingcheng City, Liaoning Province
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P931

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    Abstract:

    [Objective] Taking Xingcheng City, Liaoning Province as the research area, this study evaluates and analyzes the topographic conditions of arable land in order to provide the basis for guiding crop cultivation, arable land quality evaluation, soil erosion and debris flow disaster prevention, and ecological environmental protection of the arable land.[Methods] Based on the digital elevation model (DEM), the slope, aspect, surface undulation, plane curvature and terrain roughness were selected as the evaluation factors, to evaluate the cultivated land topographic conditions by the multi-factor weighted comprehensive evaluation.[Results] The terrain condition of the arable land of Xingcheng City was as follows:85.57% of the total arable land was good arable land of grade Ⅰ and Ⅱ, 14.17% was general arable land of grade Ⅲ and Ⅳ, and only 0.26% was grade Ⅴ.[Conclusion] The topographic conditions of arable land in Xingcheng City are relatively good as a whole. However, few arable land is in poor topographic conditions, which is not suitable to reclaim and needs to be returned to farmland.

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吴松泽,闫卓冉,马剑,徐铭崇,范语思,王建国.基于DEM的辽宁省兴城市耕地地形条件评价[J].水土保持通报英文版,2018,38(5):195-199,205

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History
  • Received:April 14,2018
  • Revised:May 02,2018
  • Adopted:
  • Online: November 10,2018
  • Published: