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




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SpringerPlus

, 2:S7

First Online: 11 December 2013

Abstract

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.

Keywordshilly loess plateau conversion of cropland to forest soil and water conservation  Download fulltext PDF



Autor: Chuanchuan Zhao - Ninggui Yang - Zhen Wang - Sili Liu - Xu Dong - Wenrong Xin

Fuente: https://link.springer.com/



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