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Chapter 1 Introduction
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Grasslands are not only the m&ln souree ot feed±or livestock but also have the abili—ty to conserve wate r．regulate atmosphere and water cycle．improve ecological environmen[functions arid values．as well as provide habitatforsolne wildlife For these Yeason8 9rasslands…key component of the Earth’s tenestrial ecosystem In ree rltyears，there is an obvious trendofrassland degradation worldwide due to the combinedeffects of climate chⅢ蚪and human activities Widespread land desertification，wa[erreources depletion．species extinction．food shoaage and other sevele ecological andsocionomic issues have deterioratedthe entire ecosystem Hence．it has…ghttheattention of countries around the world and the Mongolian Plateau is a typical example
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