Benefit assessment of soil and water conservation from cropland to forest in hilly Loess Plateau at Qinghai

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• 作者：Chuanchuan Zhao ; Ninggui Yang ; Zhen Wang ; Sili Liu ; Xu Dong ; Wenrong Xin
• 关键词：hilly loess plateau ; conversion of cropland to forest ; soil and water conservation
• 刊名：SpringerPlus
• 出版年：2013
• 出版时间：December 2013
• 年：2013
• 卷：2
• 期：1-supp
• 全文大小：621KB
• 参考文献：1.Zhuna Wang, Lei Pan, Xuebiao Yu: Research Advances in Evaluation on Ecological Benefits on"Grain for Green"Program. Journal of Southwest Forestry College 2007,27(1):91鈥?6.
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  7.Wenpeng Lin: Abstraction of Present Situation of Land Use Using Digitization of Remote Sensing Image. Surveying and Mapping of Geology and Mineral Resources 2006,17(4):12鈥?4.
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• 作者单位：Chuanchuan Zhao (12)
  Ninggui Yang (12)
  Zhen Wang (12)
  Sili Liu (12)
  Xu Dong (13)
  Wenrong Xin (13)
  
  12. College of Resources & Environment, Shaanxi University of Science and Technology, Xi鈥檃n, China
  13. Qinghai Provincial Forest Inventory and Planning Institute, Xi鈥檔ing, China
  
• 刊物类别：Science, general;
• 刊物主题：Science, general;
• 出版者：Springer International Publishing
• ISSN：2193-1801

文摘

The information of slope and vegetation coverage of the monitoring region were extracted, based on DEM (Digital Evaluation Model) and Spot5 Satellite data images, and fishnet grid was generated using GIS (Geographic Information System) and RS (Remote Sensing) technique. Applying the information of slop and vegetation coverage layers into the corresponding space grid by using the function of zonal statistics and analysis, it can realize overlay analysis based on Standards for Classification and Gradation of Soil Erosion (SL190-2007), and obtains the map of soil erosion intensity of the monitoring region. Finally, according to Specifications for Assessment of Forest Ecosystem Services (LY/T1721-2008) and monitoring data of typical plot, the soil and water conservation value from cropland to forest was evaluated quantitatively in 2009. The results showed that the area, on and below the moderate level, was 93600 ha, taking up 50.03% of total conversion of farmland to forest area (185100 ha), which indicates a 14.64 million (t/a) of soil conversion, and a 1520 million Yuan for erosion control. The results of the study showed that the soil and water conservation was very effective. Keywords hilly loess plateau conversion of cropland to forest soil and water conservation