1. Xie,Yun,James R. Kiniry,Jimmy R. Williams. The ALMANAC model's sensitivity to input variables. Agricultural systems,2003,78: 1-162. Xie,Y. and J.D. Liu. Impact of climate on grain yields in Chin
2006. 民勤盆地沙漠化贫困化与水资源开发利用. 自然资源学报, 21(4): 1-8. Ma J., Wang X.S., Edmunds WM. 2005. The characteristics of groundwater resources and their changes under the impacts of Human activity in