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11 2000-2010年和2010-2013年陕北地区降水量和植被覆盖度变化 |
Fig. 11 Comparison of variations of mean annual precipitation and vegetation cover fraction of 2000 to 2010 and 2010 to 2013 |
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