中国北方干旱半干旱区沙漠化治理对植被格局的影响 |
刘俊壕, 周海盛, 郭群 |
The effects of desertification control on the patterns of vegetation in arid and semi-arid regions of northern China |
Junhao Liu, Haisheng Zhou, Qun Guo |
图1 中国北方及各自然单元不同时期沙漠化面积 |
Fig.1 Area of desertification in different periods and natural units in northern China |