Research Article

Coupling Analysis of Hydrometeorology and Erosive Landforms Evolution in Loess Plateau, China

Table 1

Parameters configuration of Erosive Landform Evolution Index (ELEI).

Parameters of Erosive Landform Evolution IndexWeihe RiverJinghe RiverBeiluo RiverWudinghe River

Gully
 Gully density (km/km2) 0.130.150.150.13
 Runoff (108 m3)64.6216.018.1610.86
 Sediment discharge (108 t)2.942.080.680.92

RDLS
 0–200.44%0.23%0.61%1.67%
 20–755.81%1.01%3.96%37.30%
 75–30029.82%52.36%58.94%53.12%
 300–60042.31%44.49%36.45%7.85%
 600–max21.62%1.91%0.04%0.06%
 Runoff (108 m3)64.6216.018.1610.86
 Sediment discharge (108 t)2.9422.0830.6820.916

Slope (°)
 0~524.32%16.69%19.12%57.46%
 6~1538.14%40.77%41.05%27.89%
 16~2523.98%32.75%29.54%11.94%
 26~359.56%6.24%8.85%2.31%
 36~402.20%2.92%0.88%0.22%
 41~451.08%0.30%0.31%0.09%
 46~max0.73%0.34%0.24%0.09%
 Runoff (108 m3)64.628.1616.0110.86
 Sediment discharge (108 t)2.9420.6822.0830.916

ELEI
 Gully length (km)9334.0535015865.514414.58
 RDLS (km2, 20–600 m)48825.2226755.7544496.0429713.77
 Slope (km2, 0–25°)54150.0124294.2740790.3129417.45