Taking the case of Niqiu river and Keluo river

the relation of land use/cover change with river runoff is discussed. When total precipitation increases in Niqiu river watershed

surface runoff decreases. The change of forest cover results in decreasing of evaporative capacity. However

superfluous water has not formed surface runoff but was stored in mire wetland transformed from forest and grass land. The surface runoff was increased in Keluo river watershed because the forest area decreased. Forest change affects surface runoff more than farmland change. The relation of land use /cover change affecting river runoff is complicated

and it is not the result of unique land use/cover change

but the coupling operation of land use/cover change which affects river runoff. In general

the change of marsh is most effective in all the change.