DEM空间插值方法对土壤侵蚀模拟的影响研究——以USPED分析干热河谷典型冲沟为例

徐亚莉, 罗明良, 梁倍瑜, 昌小莉, 向卫, 张斌

Effects of different DEM spatial interpolation methods on soil erosion simulation:A case study of a typical gully of dry-hot valley based on USPED

Yali XU, Mingliang LUO, Beiyu LIANG, Xiaoli CHANG, Wei XIANG, Bin ZHANG

表5 沟底侵蚀模拟的插值方法相对差系数

Tab.5 Coefficient of relative difference estimated by different interpolation methods of gully bottom erosion simulation

插值方法 DK IDW LPI ST DK — (0.55,0.65) (0.59,0.68) (0.65,0.75) IDW (0.41,0.56) — (0.56,0.69) (0.82,0.66) LPI (0.52,0.61) (0.52,0.59) — (0.71,0.74) ST (0.59,0.70) (0.51,0.69) (0.78,0.81) —