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辽西半干旱区典型人工林生态系统的水土保持功能

  

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2007-12-21 发布日期:2007-12-21

  • Received:1900-01-01 Revised:1900-01-01 Online:2007-12-21 Published:2007-12-21

关键词: 黄河源区, 玛多县, 草地退化, 气候变化, 过度放牧

Key words: Source region of Yellow River, Maduo County, Grassland degradation, Climate change, Overgrazing