Arid
DOI10.1016/j.catena.2010.03.002
Optimization of land use structure and spatial pattern for the semi-arid loess hilly-gully region in China
Gao, Qingzhu1,2,3; Kang, Muyi1; Xu, Hongmei4; Jiang, Yuan1; Yang, Jie5
通讯作者Kang, Muyi
来源期刊CATENA
ISSN0341-8162
EISSN1872-6887
出版年2010
卷号81期号:3页码:196-202
英文摘要

The semi-arid loess hilly-gully region in China has an extremely vulnerable ecological environment. Inappropriate land use - crop farming, overgrazing, and plantation forestry - has worsened soil erosion, intensified water shortage, and hence impeded the ecological conservation and agricultural development of the entire region in the past. Optimizing land use and vegetation cover and spatial pattern is conducive to achieving both ecological and economic goals in terms of controlling soil erosion, using water resources rationally and raising agricultural productivity. Changchuan Watershed, a typical small catchment in the semi-arid loess hilly region, was selected as the case study area to analyze the impacts of land use and land cover structure and associated spatial pattern on soil erosion and water consumption in the Watershed, through field investigation and model simulation. Land use structure was optimized by multi-objective programming, using remote sensing (RS) and geographical information system (GIS) techniques, analytic hierarchical programming (AHP) and expert consultancy. The digitized optimum spatial pattern embodying rationally-proportioned land use structure was obtained through GIS-aided redistribution of land use types. The optimized land use structure reapportioned woodlands, shrublands, grasslands, and croplands at 3.7%, 38.6%, 49.4%, and 6.3% of the land area respectively, compared to the current land use structure of 2.4%, 38.6%, 24.0%. and 12.6%, respectively, in the Changchuan Watershed. In the optimized land use spatial pattern, croplands are mainly located in the riverside plain and check-dammed valleys and grasslands are widely distributed in the lower reaches of the basin, while shrublands are appropriately established in the middle and upper reaches of the river. A comparative analysis shows that the optimized land use structure, with well-designed spatial pattern is able to reduce soil erosion, enhance the utilization of water resources and raise agricultural productivity. (C) 2010 Elsevier B.V. All rights reserved.


英文关键词Land use structure and spatial pattern Ecological security Soil erosion Water consumption Geographical information system (GIS) Multi-objective programming
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000279446200002
WOS关键词METHODOLOGY ; MODELS
WOS类目Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向Geology ; Agriculture ; Water Resources
来源机构北京师范大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/163610
作者单位1.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China;
2.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Beijing 100081, Peoples R China;
3.Minist Agr, Key Lab Agroenvironm & Climate Change, Beijing 100081, Peoples R China;
4.China Meteorol Adm, Lab Climate Studies, Natl Climate Ctr, Beijing 100081, Peoples R China;
5.Inner Mongolia Univ, Dept Ecol & Environm Sci, Hohhot 010021, Peoples R China
推荐引用方式
GB/T 7714
Gao, Qingzhu,Kang, Muyi,Xu, Hongmei,et al. Optimization of land use structure and spatial pattern for the semi-arid loess hilly-gully region in China[J]. 北京师范大学,2010,81(3):196-202.
APA Gao, Qingzhu,Kang, Muyi,Xu, Hongmei,Jiang, Yuan,&Yang, Jie.(2010).Optimization of land use structure and spatial pattern for the semi-arid loess hilly-gully region in China.CATENA,81(3),196-202.
MLA Gao, Qingzhu,et al."Optimization of land use structure and spatial pattern for the semi-arid loess hilly-gully region in China".CATENA 81.3(2010):196-202.
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