陕北地区退耕还林还草工程土壤保护效应的时空特征
刘文超,刘纪远,匡文慧

Spatiotemporal patterns of soil protection effect of the Grain for Green Project in northern Shaanxi
LIU Wenchao,LIU Jiyuan,KUANG Wenhui
图9 2000-2010年和2010-2013年陕北地区土壤侵蚀模数变化
Fig. 9 Changes of soil erosion modulus in northern Shaanxi during 2000-2010 and 2010-2013