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2 梯田解译流程

Fig. 2 Remotely sensed acquiring process on the terraced fields