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黄河中游清涧河流域土地利用空间结构和分形模型
引用本文:郭碧云,王光谦,傅旭东,张正峰.黄河中游清涧河流域土地利用空间结构和分形模型[J].农业工程学报,2012,28(14):223-228.
作者姓名:郭碧云  王光谦  傅旭东  张正峰
作者单位:1. 清华大学水沙科学与水利水电工程国家重点实验室,北京,100084
2. 中国人民大学公共管理学院土地管理系,北京,100872
基金项目:行业公益项目专题(200901016-03)
摘    要:为了揭示黄河中游土地利用的空间差异和迁移情况,该文以清涧河流域为例,基于遥感和GIS技术,通过土地利用重心迁移和分形理论对土地类型的空间演变情况进行分析,并构建各地类空间分布形态的分形结构模型。结果表明,1990年至2009年清涧河流域土地利用重心有明显的迁移;农业用地和水域的重心向西南方向迁移,在该方向水域重心迁移比较大,达到7205.85m;林地、建设用地和未利用土地重心向东南方向迁移,在该方向建设用地重心迁移距离最大,达到7421.89m;草地重心向西北方向迁移3546.38m。1990年至2009年,除水域外,其他土地类型分维数有所下降,表明该区域土地类型景观的复杂性降低,稳定性提高。自然因素对该区域土地利用空间变化起到一定的推动作用,人类活动干扰则是主要驱动因素。该文将为生态恢复区合理地土地利用规划和集约化利用土地资源提供科学依据。

关 键 词:土地利用  分形  遥感  地理信息系统  重心迁移
收稿时间:2011/9/15 0:00:00
修稿时间:2012/6/20 0:00:00

Spatial structure and fractal model of land use in Qingjian river basin of middle Yellow River
Guo Biyun,Wang Guangqian,Fu Xudong and Zhang Zhengfeng.Spatial structure and fractal model of land use in Qingjian river basin of middle Yellow River[J].Transactions of the Chinese Society of Agricultural Engineering,2012,28(14):223-228.
Authors:Guo Biyun  Wang Guangqian  Fu Xudong and Zhang Zhengfeng
Institution:1.State Key Laboratory of Hydroscience and Engineering,Tsinghua University,Beijing 100084,China;2.School of Public Administration,Renmin University of China,Beijing 100872,China)
Abstract:In order to reveal the spatial differences and the change course of land use in the middle reaches of the Yellow River, taking the Qingjian River area in the middle reaches of the Yellow River as the case, the spatial evolution of the land use was analyzed through the land use gravity center migration theory and fractal theory, and the fractal structure model of sorted land spatial distribution pattern was built based on RS and GIS technology. The results showed that land-use focus migrated significantly from 1990 to 2009 in Qingjian River area. The gravity center of farm land and water migrated towards the southwest, and migration of water gravity towards the direction reached 7205.85 meters. Forest, construction land and unused land gravitated towards the southeast, and the focus of construction land migrated in the direction most, reaching 7421.89 meters. The focus of grassland moved 3546.38 meters to the northwest. During 1990-2009, the land fractal dimension of land use types decreased except water area, which indicated that the complexity of landscape types reduced in the region and the stability increased. Natural factors played a promoting role in the land use spatial variation; however it is human disturbance that played the main driving role. The article provides a scientific basis for reasonable land use plan and intensive land use in ecological restoration areas.
Keywords:land use  fractals  remote sensing  geographic information systems  the shift of gravity center
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