| The impact of cropland conversion on environmental effect in the Loess Plateau：a pilot study based on the national experimental bases |
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| 作者姓名： | WANG Fei LI Rui JIAO Feng YANG Qingke TIAN Junliang |
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| 作者单位： | [1]Institute of Soil and Water Conservation, CAS, Yangling 712100, China [2]Northwest A ＆ F University, Yangling 712100, China |
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| 基金项目： | Knowledge Innovation ProjectofCAS,No.KZCX3-SW -421，NationalKey Task Research ofthe Ninth Five-YearPlan, No.96-004-05，Knowledge Innovation Project of CAS, No.KZCX1-06，Special Research Foundation ofISW C,CAS,No.ISW C-SP-C128 |
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| 摘 要： | 1 Introduction The soilerosion in Loess Plateau is mostserious on the globe mainly due to the destroying of naturalvegetation and cultivation on slope land overextensive areas(Yang and Yu,1992;Jiang, 1997).To convertsloping cropland (cropped land on slope…
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| 关 键 词： | 黄土高原 退耕还林 生态环境 生态系统 中国 林业建设 |
| 收稿时间： | 5/8/2005 12:00:00 AM |
| 修稿时间： | 2005-05-082005-07-20 |
The impact of cropland conversion on environmental effect in the Loess Plateau: a pilot study based on the national experimental bases |
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| WANG Fei LI Rui JIAO Feng YANG Qingke TIAN Junliang.The impact of cropland conversion on environmental effect in the Loess Plateau: a pilot study based on the national experimental bases[J].Journal of Geographical Sciences,2005,15(4):484-490. |
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| Authors: | Wang Fei PhD Li Rui Jiao Feng Yang Qingke Tian Junliang |
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| Institution: | (1) Institute of Soil and Water Conservation, CAS, 712100 Yangling, China;(2) Northwest A & F University, 712100 Yangling, China |
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| Abstract: | Conversion of cropland to forestry and grassland is an important method to reduce soil erosion and improve the biophysicalenvironmentin the Loess Plateau.The feasibility,methods,and environmentaleffectsofcropland conversion were studied based on 11 typicalwatershedsofnational experimentalbasesinstead ofdifferentgeographic areasofthe LoessPlateau.Between 1986 and 2000, cropland,sloping cropland and non-agriculturalland decreased by 8% ,92.5% and 8% respectively, while forestry increased by 15.7% .The land use change notonly decreased annualsoilerosion by 74% , but also increased vegetation coverage by 100% and improved the soil condition and biodiversity.This can be achieved by building basic farmland,increasing capitaland scientific input, and planting treesand grassesaccording to thenaturalbiophysicalrestrictions. |
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| Keywords: | LoessPlateau land useand coverchange cropland conversion environmentaleffect |
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