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北京石油化工学院2026年研究生招生接收调剂公告
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海内存知己

木虫 (职业作家)


[资源] Soil erosion response to climatic change and human activity.pdf

Soil erosion response to climatic change and human activity.pdf

soil erosion during the transition from dry-cool to wet-warm climates was more intense than during wet-warm and cool-dry climatic episodes, but serious accelerated soil erosion has occurred during the last 2,500 years because of man-induced devastation of vegetation and other anthropogenic disturbance of the environment. Modern rates of soil erosion on the Loess Plateau are a combination of both intensive natural and human-induced erosions andare some four times greater than occurred in the geological past. The recent implementation of soil and water conservation measures has decreased sediment load in the Yellow River by 25%.
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cattail


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非常感谢^_^
2楼2007-09-30 02:20:55
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bkbysj

木虫 (小有名气)


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不错的英文书籍
5楼2008-01-09 14:00:17
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简单回复
2007-10-02 15:55   回复  
 谢谢分享
deanxiao4楼
2008-01-09 13:31   回复  
 
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