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Appraisal of land use suitability on the background of Grain for Green in the Loess Plateau:A case study in Majiagou Catchment of Ansai County
Authors
万龙
付艳玲
+4 more
刘国彬
吴艳
张晓萍
陈凤娟
Publication date
1 January 2010
Publisher
Abstract
采用坡度、土壤侵蚀强度和地貌部位等指标,对黄土丘陵区马家沟流域1990年和退耕后近10年的2008年的土地利用情况进行适宜性评价。结果表明:1)退耕还林作用影响下,1990—2008年间,流域中农用地减少了11.74%,林地增加了11.54%,园地增加了1.82%,主要发生在>15°陡坡地段;2)马家沟流域土地利用相对合理指数由1990年的0.64变为2008年的0.67;3)2008年农、林、草主要地类占流域面积分别为21.17%、19.57%和56.62%。农用地类型中,高适宜性地类(适宜性指数A>0.8)和中适宜性地类(0.5≤A≤0.8)面积分别为1.31%和21.27%,低适宜性地类(A<0.5)面积占77.42%。林地类型中,高(A>0.7)、中(0.5≤A≤0.7)、低适宜性(A<0.5)地类分别占7.21%、24.56%和68.23%。草地类中,高(A>0.7)和中适宜性(0.4≤A≤0.7)地类面积分别占24.87%和75.13%
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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Last time updated on 21/09/2018