| 嘉鱼县土地利用结构与效益变化的耦合效应分析 |
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| 引用本文： | 孔雪松,刘艳芳,谭传凤.嘉鱼县土地利用结构与效益变化的耦合效应分析[J].资源科学,2009,31(7):1095-1101. |
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| 作者姓名： | 孔雪松 刘艳芳 谭传凤 |
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| 作者单位： | 1. 武汉大学资源与环境科学学院,武汉,430079;武汉大学教育部地理信息系统重点实验室,武汉,430079
2. 华中师范大学城市与环境科学学院,武汉,430079 |
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| 基金项目： | 国家自然科学基金（编号：40271088） |
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| 摘 要： | 土地利用结构优化配置是实现土地利用效益增长的核心内容之一，研究两者之间的时空变化关系对于解决我国城市化快速发展中面临的一系列问题具有重要的现实意义。本文借助信息论原理，分析1997年～2007年湖北省嘉鱼县土地利用结构信息熵与均衡度动态演变特征；运用层次分析法原理构建简明化的指标体系，探讨其研究期间土地利用效益的变化特点；同时利用灰色关联分析法比较研究土地利用结构与效益变化的定量关系。研究表明：①1997年～2007年嘉鱼县土地利用结构信息熵与均衡度呈上升趋势，土地利用综合效益在此基础上出现较快增长，土地利用结构信息熵与土地利用综合效益变化之间呈现出较明显的相关性，关联度为0.7679；②不同土地类型的结构变化与土地利用综合效益变化之间分为强、较强、中等3种关联性，强关联的是居民点及工矿用地、园地，关联度均在0.8以上，较强关联的是林地、未利用地与耕地，关联度都高于0.7，中等关联的是交通用地与水域，关联度分别为0.6714与0.6672；③合理的土地利用结构是土地利用效益有效发挥的前提，土地利用效益变化是土地利用结构时空变化的即时效应与累积效应的共同结果。
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| 关 键 词： | 土地利用结构 土地利用效益 信息熵 关联度 嘉鱼县 |
Correlation Analysis of the Changes of Land Use Structure and Land Use Efficiency |
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| KONG Xuesong,LIU Yanfang and TAN Chuanfeng.Correlation Analysis of the Changes of Land Use Structure and Land Use Efficiency[J].Resources Science,2009,31(7):1095-1101. |
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| Authors: | KONG Xuesong LIU Yanfang and TAN Chuanfeng |
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| Abstract: | Land use efficiency is one of the primary fields in land use study as it is an essential indicator for land use assessment. Land use efficiency refers to the direct outputs or effects brought by the land use process. Land use efficiency is an integrated concept comprising three sub-systems, which are economy, society and ecology. One important component of improving land use efficiency is the optimization of land use. Spatial-temporal analyses of land use structure and land use efficiency are useful for addressing the problems related to the rapid urbanization in China. Based on information theory, the changes in information entropies of land use structure in Jiayu from 1997 to 2007 are generated by using the land use data. The indicator system for evaluating land use efficiency is set up by means of AHP, in which 3 indicators representing economy, society and ecology are included. Finally, with the method of grey correlation analysis, the correlations between land use structure and land use efficiency are studied. The results show that the information entropies and equilibrium degrees of land use structure have increased gradually in Jiayu from 1997 to 2007, and the corresponding index values of land use efficiency have manifested a rapid increase from 0.0428 to 0.7608 in the study area. There are certain logical relations between land use structure and land use efficiency, and the correlation degree is 0.7679. The land use potential of Jiayu County is comparatively large and there is still space for further optimization of its land use structure. According to the actual situation of study area, the standards of correlation degree of land use types are classified into three levels: high (>0.8); secondary (>0.7) and medium (>0.6). The descending order of correlation degree for each land use type is: residential and unattached industrial land (0.8104), garden (0.8087), forestland (0.7405), unused land (0.7264), cultivated land (0.7011), traffic land (0.6714) and water area (0.6672). Land use structure plays an important role in improving land use efficiency with instant and accumulative effects. The information entropy of land use structure maintains a rising-adjusting-rising trend, and the land use efficiency maintains a growing trend according to the changes. In further study, more attention should be paid to the functions of the different spatial combination and land use types distribution in order to improve land use efficiency. |
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| Keywords: | Land use structure Land use efficiency Information entropy Correlation degree Jiayu |
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