An Assessment of Human versus Climatic Impacts on Jing River Basin, Loess Plateau, China

Table 6

Engineering measures of area upstream of ZHS before 1999 (in ha).

Type	Character	Unit	Ningxia	Gansu	Shaanxi	Amount
Reservoir	Number	Set	36	20	38	94
	Control area	km^2	1354.9	3969.5	3546.0	8870.4
	Capacity	Mm^3	93.3	566.3	365.8	1025.4
	Siltation	Mm^3	39.1	316.2	217.1	572.4
		Mt	52.8	426.9	293.1	772.7
Key projects for gully control	Number	Set	21	69	5	95
	Control area	km^2	376.1	362.7	57.4	796.2
	Capacity	Mm^3	57.5	49.7	3.8	111.0
	Siltation	Mm^3	0	18.6	1.8	20.4
		Mt	0	25.1	2.4	27.5
Check dam	Number	Set	1291	143	72	1506
	Siltation	Mm^3	0.4	7.7	9.0	17.1
		Mt	0.5	10.4	12.2	23.1
Total amount of siltation		Mm^3	39.5	342.5	227.9	609.9
		Mt	53.3	462.4	307.7	823.3