【摘要】 我国整体生态环境的主要河流长江、黄河都起源于西部,近年来,由于生态恶化造成的沙尘风暴及洪涝灾害不断给全国造成影响和威胁,因此,西部的植被建设必然是关系全国整体生态环境的大事.更多还原

【Abstract】 Both the Yangtze River and the Yellow River in China originate from the Western Region of the country.Some negative impacts and threats to the country in recent year with sandstorms and floods resulted from the deterioration of the ecological system.Therefore,vegetation construction in the Western Region is an important issue relevant to the national ecological environment.更多还原