Changes in Different Classes of Precipitation and the Impacts on Sediment Yield in the Hekouzhen-Longmen Region of the Yellow River Basin, China

Table 9

Statistics of the quantity of key check dams built in each decade in the HLR.

Decades	1950–1959	1960–1969	1970–1979	1980–1989	1990–1999	2000–2011
Quantity	73	261	1052	247	488	1605