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	Approach to the land-use change and its influential factors in Loess Plateau of Dingxi Prefecture
	Li Y.; Li Y.
	2004
会议名称	Proceedings of the Society of Photo-Optical Instrumentation Engineers (Spie)
关键词	Dingxi Prefecture Loess Plateau land use change GIS canonical correlation analysis (CCA)
页码	524-533
英文摘要	Based on land-use datum (at scale of 100,000) of the interpretation of Landsat Thematic Mapper in 1980, 1995 and 2000, which came from environmental database of the Chinese Academy of Sciences, the authors investigated land-use change and influential factors by the combined use of geographic information systems (GIS) method, Markov model and canonical correlation analysis (CCA) statistical method. The results showed that, in the periods 1980-2000, crop land increased by 0.58 percent (4278.86 hectares), of which 92.93 percent was transformed from grassland and 7.07 percent from forestland. Urban or built-up land increased by 26.23 percent (687.45 hectares), of which 77.35 percent was transformed from cropland. Rural residential land increased by 5.17 percent (1324.37 hectares). Forestland and water land decreased in area. Grassland decreased by 0.57 percent (5706.77 hectares). Secondly, transition rate of landscape spatial pattern among the landscape elements from 1995 to 2000 was slower than that from 1980 to 1995. Land use types as cropland, grassland, woodland and rural residential land were the primary change types from 1995 to 2000. Thirdly, both natural and social economic factors influenced land use pattern. The population and per capita grain yield were positively correlated to rural residential pattern. The spatial distribution of grassland and cropland showed strong positive correlation to annual rainfall and annual air temperature, and negative association to annual per capita net income of rural residents. The poor annual per capita net income of rural residents and investment in capital construction restricted the extended area of urban build-up land. Therefore, the drought is not proportional to pattern of urban build-up land. The study verified the analysis conclusion of influential factors by redundancy degree of CCA. The integration of remote sensing data, GIS, Markov process and CCA provided a comprehensive method to analyze land use pattern and process with influential factors.
收录类别	CPCI
会议录出版者	Spie-Int Soc Optical Engineering
语种	英语
ISSN号	0277-786X
ISBN号	0-8194-5482-6
内容类型	会议论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/25170]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Li Y.,Li Y.. Approach to the land-use change and its influential factors in Loess Plateau of Dingxi Prefecture[C]. 见:Proceedings of the Society of Photo-Optical Instrumentation Engineers (Spie).

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