作　　者： (蒲阳）; (徐亚莉）; (王汝兰）; (罗明良）;

机构地区： 西华师范大学国土资源学院,四川南充637009

出　　处： 《亚热带水土保持》 2017年第3期1-7,共7页

摘　　要： 为了分析土壤侵蚀/沉积潜力与地形因子的相关性,以元谋干热河谷典型冲沟为研究样区,基于实测高程点数据构建DEM,采用USPED模型对样区土壤侵蚀/沉积潜力进行模拟,并结合地形因子(坡度、LS因子、曲率)探讨其与土壤侵蚀/沉积潜力模型模拟结果的相关性。研究结果表明,在三种地形因子与土壤侵蚀/沉积潜力模拟结果的对比分析中,总体趋势为土壤侵蚀能力均大于沉积能力,侵蚀面积比均大于沉积面积比,但在不同分级的地形因子对应的土壤侵蚀/沉积潜力模拟结果中揭示了不同的相关性。 The DEM was constructed based on the measured elevation data in the typical gully Yuanmou dry - hot valley, so as to analyze the correlation between the soil erosion/ sedimentation potential and terrain factors （ slope, LS and curvature） by the simulation of soil erosion/ sedimentation potential in the sample plots with the USPED model. The results show that the soil erosion ability is greater than the sedimentation capacity in the comparative analysis of the three terrain factors and soil erosion simulation. The erosion area ratio is higher than the sedimentation area ratio. But different correlations were revealed in the simulation results of soil erosion/ sedimentation potentials in accordance with the different grading topographic terrain factors.

关 键 词： 坡度 因子 曲率