Quantitative Attribution Analysis of the Spatial Differentiation of Gully Erosion in the Black Soil Region of Northeast China

Table 8

High-risk areas of gully erosion and its mean value.

Factors	High-risk area of gully density	Average gully density (m/km^2)	High-risk area of gully intensity	Average gully intensity (m^2/km^2)
Rainfall erosivity	210-211	1281.461	210-211	11752.866
Elevation	220-260 m	1197.326	220-260 m	7991.692
Slope shape	Convex slope	856.4095653	Convex slope	5781.986
Slope direction	West slope	948.096	West slope	6605.746
Slope position	Midslope	932.913	Midslope	6706.873
Slope degree	4-8°	1218.920	4-8°	8326.412
Slope length	0-150 m	834.017	0-150 m	5588.848
Residential distance	<0.5	879.799	<0.5	5806.133
Distance from the river	250 m-500 m	955.356	250 m-500 m	6701.476
Distance from the road	100 m-200 m	906.231	200 m-300 m	6452.205
Plane curvature	0-5	857.684	0-5	5802.145
Sectional curvature	-25–-5	880.640	5-15	5990.171
Catchment area	2-3 km^2	1223.724	2-3 km^2	10554.147
Topographic wetness index	5-7.5	939.908	5-7.5	6449.666
Soil type	Humus dark brown soil	1923.932	Humus dark brown soil	17149.954
Soil erodibility	0.27-0.29	1250.745	0.27-0.29	9139.993
Lithology	Gray–white matter rhyolite, globular rhyolite, crystal clastic tuff	3542.989	Gray–white matter rhyolite, globular rhyolite, crystal clastic tuff	22833.733
Land use	Cultivated land	1027.192	Cultivated land	6656.717