【摘 要】
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The Loess Plateau (LP) is an ecologically fragile region due to its sensitivities to climate variations and anthropogenic influences [1].The Chinese government recognized the ecological significance of the LP and implemented a series of ecological restora
【机 构】
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Key Laboratory of Water Cycle and Related Land Surface Processes,Institute of Geographic Sciences an
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The Loess Plateau (LP) is an ecologically fragile region due to its sensitivities to climate variations and anthropogenic influences [1].The Chinese government recognized the ecological significance of the LP and implemented a series of ecological restoration and con-servation policies since 1999.Revegetation of degraded ecosys-tems of the LP is mainly attributed to the environmental protection policies.These policies are led by Grain for Green(GFG) project,supported by some vegetation conservation pro-grams.The GFG project,also known as the Conversion of Cropland to Forest and Grassland Program,was launched in 1999,and the LP is one of the pilot regions of this project.The first phase of GFG was implemented between 1999 and 2014,and the second phase started in 2015.The local farmers were accommodated by provid-ing grain and cash subsidies for converting their agriculture land into forests and/or grasslands [2].The GFG program has converted approximately 16,000 km2 of rain-fed agriculture land to grassland and forests,resulting in a 25％ increase in vegetation cover of the LP during 1999 and 2010 [3].
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