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4 陕北地区梯田解译结果与1 km×1 km栅格梯田百分比成分数据

Fig. 4 Remotely sensed interpretation of terraces cover (a) and percentage of terraces cover (b) at a 1 km×1 km grid in northern Shaanxi