PROGRESS IN GEOGRAPHY ›› 2016, Vol. 35 ›› Issue (7): 870-877.doi: 10.18306/dlkxjz.2016.07.008
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Yali XU, Mingliang LUO*(), Beiyu LIANG, Xiaoli CHANG, Wei XIANG, Bin ZHANG
Received:
2016-01-01
Revised:
2016-05-01
Online:
2016-07-20
Published:
2016-07-20
Contact:
Mingliang LUO
E-mail:lolean586@163.com
Yali XU, Mingliang LUO, Beiyu LIANG, Xiaoli CHANG, Wei XIANG, Bin ZHANG. 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[J].PROGRESS IN GEOGRAPHY, 2016, 35(7): 870-877.
Tab.3
Characteristic values of soil erosion and deposition estimated by different interpolation methods/(t/(m2·a))"
插值 方法 | 土壤侵蚀/沉积量 | ||||
---|---|---|---|---|---|
最大沉积量 | 最大侵蚀量 | 沉积均值 | 侵蚀均值 | 侵蚀模拟均值 | |
IDW | 1848.97 | 1757.39 | 181.57 | -159.05 | 4.37 |
LPI | 1628.41 | 1592.21 | 170.25 | -161.23 | 0.57 |
DK | 1758.95 | 1538.18 | 161.49 | -145.85 | 5.99 |
ST | 1627.86 | 1592.53 | 169.94 | -157.01 | 0.85 |
Tab.4
Areas of erosion and deposition estimated by gully erosion simulations"
IDW | LPI | DK | ST | |
---|---|---|---|---|
A/m2 | 4573.00 | 4573.00 | 4573.00 | 4573.00 |
S/m2 | 796.65 | 746.50 | 667.29 | 784.99 |
SE/m2 | 426.38 | 383.10 | 324.39 | 372.60 |
SD/m2 | 370.27 | 363.40 | 342.90 | 412.39 |
SE/S | 0.5352 | 0.5132 | 0.4861 | 0.4747 |
SD/S | 0.4648 | 0.4868 | 0.5139 | 0.5253 |
S/A | 0.1742 | 0.1632 | 0.1459 | 0.1717 |
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) | — |
Tab.6
Coefficient of relative difference estimated by different interpolation methods of hillslope erosion simulation"
插值方法 | DK | IDW | LPI | ST |
---|---|---|---|---|
DK | — | (0.55,0.33) | (0.50,0.42) | (0.57,0.44) |
IDW | (0.65,0.06) | — | (0.51,0.07) | (0.47,0.06) |
LPI | (0.41,0.46) | (0.51,0.38) | — | (0.41,0.26) |
ST | (0.49,0.33) | (0.57,0.20) | (0.42,0.37) | — |
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