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GIS-based effect assessment of soil erosion before and after gully land consolidation: A case study of Wangjiagou project region, Loess Plateau
Liu Y. S.; Guo, Y. J.; Li, Y. R.; Li, Y. H.
Source PublicationChinese Geographical Science
2015
Volume25
Issue2
Pages137-146
KeywordGully Land Consolidation Land-resource Engineering Revised Universal Soil Loss Equation (Rusle) Effect Assessment Loess Plateau Green Program Loss Equation China Water Grain Conservation County Agriculture Conversion
AbstractThe Loess Plateau is one typical area of serious soil erosion in the world. China has implemented 'Grain for Green' (GFG) project to restore the eco-environment of the Loess Plateau since 1999. With the GFG project subsidy approaching the end, it is concerned that farmers of fewer subsidies may reclaim land again. Thus, 'Gully Land Consolidation Project' (GLCP) was initiated in 2010. The core of the GLCP was to create more land suitable for farming in gullies so as to reduce land reclamation on the slopes which are ecological vulnerable areas. This paper aims to assess the effect of the GLCP on soil erosion problems by studying Wangjiagou project region located in the central part of Anzi valley in the middle of the Loess Plateau, mainly using the revised universal soil loss equation (RUSLE) based on GIS. The findings show that the GLCP can help to reduce soil shipment by 9.87% and it creates more terraces and river-nearby land suitable for farming which account for 27.41% of the whole study area. Thus, it is feasible to implement the GLCP in places below gradient 15A degrees, though the GLCP also intensifies soil erosion in certain places such as field ridge, village land, floodplain, natural grassland, and shrub land. In short, the GLCP develops new generation dam land and balances the short-term and long-term interests to ease the conflicts between economic development and environmental protection. Furthermore, the GLCP and the GFG could also be combined preferably. On the one hand, the GFG improves the ecological environment, which could offer certain safety to the GLCP, on the other hand, the GLCP creates more farmland favorable for farming in gullies instead of land reclamation on the slopes, which could indirectly protect the GFG project.
Indexed BySCI
Language英语
ISSN1002-0063
DOI10.1007/s11769-015-0742-5
Citation statistics
Cited Times:22[WOS]   [WOS Record]     [Related Records in WOS]
Document TypeSCI/SSCI论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/38750
Collection历年回溯文献
Recommended Citation
GB/T 7714
Liu Y. S.,Guo, Y. J.,Li, Y. R.,et al. GIS-based effect assessment of soil erosion before and after gully land consolidation: A case study of Wangjiagou project region, Loess Plateau. 2015.
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