无定河上游河道对沙漠化的阻截效应

颜明, 张应华, 贺莉, 程维明, 王随继, 许炯心

Blocking effect of upper reaches of Wuding River on desertification

Ming Yan, Yinghua Zhang, Li He, Weiming Cheng, Suiji Wang, Jiongxin Xu

图5 毛乌素沙地及无定河黄土地貌趋势面分布

Fig.5 Distribution of loess geomorphic trend surface of Mu Us Sandy Land and Wuding River