7Qi Shanzhong,Fang Luo. Water environmental degradation of the Heihe River Basin in arid northwestern China[J].Environmental Monitoring and Assessment, 2005,108 : 205 - 215.
8Feng Q,Liu W,Su Y H,et al. Distribution and evolution of water chemistry in Heihe River basin[J]. Environmental Geology, 2004,45 : 947-956.
9Zhu G F,Su Y H, Feng Q. The hydrochemical characteristics and evolution of groundwater and surface water in the Heihe River Basin, northweat China [J]. Hydrogeology Journal, 2008,16(1) : 167-182.
10Winston W E,Criss R E. Geochemical variations during flash flooding, Meramec River Basin, May 2000[J]. Journal of Hydrology, 2002,265 :149-163.