区域土地利用变化图谱分析及其生态效应评价——以太原市城区及近郊区为例  

Image Analysis of Regional Land Use Change and Its Eco-Environmental Effects Evaluation—A Case Study on Urban and Suburban Area of Taiyuan City

作　　者：刘琦[1] 任志远[1] 李晶[1] 

机构地区：[1]陕西师范大学旅游与环境学院,西安710062

出　　处：《中国农业科学》2007年第10期2259-2266,共8页Scientia Agricultura Sinica

基　　金：国家自然科学基金项目(40371003)

摘　　要：【目的】为太原市城区及近郊区土地资源的可持续利用以及生态环境保护提供决策支持,以促进研究区生态环境和社会经济的持续发展。【方法】运用地学信息图谱理论和方法,在RS和GIS的支持下生成了太原市城区及近郊区1990～2001年土地利用变化图谱,在此基础上,对研究区1990～2001年土地利用变化特征进行了分析并对其生态效应进行了测算。【结果】11年中,研究区耕地、草地、水域在不断减少,其中耕地减少最多;园地、未利用地、林地、建设用地在不断增加,其中林地增加最多;土地利用的变化导致了研究区生态系统的生态服务价值从1990年的1202.15×10^6元增加到2001年的1251.49×10^6元,年增加率为0.37%。【结论】土地利用类型变化最大的是耕地向未利用地的转化,其次为耕地向城镇用地的转化;草地、耕地的退化及未利用地的增加给研究区的生态系统服务带来了一定的负面影响;经过实证分析,利用地学图谱进行土地利用变化和生态效应定量研究是一种十分有效的方法。[Objective] The aim of this study is to provide decision-making support for the sustainable utilization and the ecological environment protection in urban and suburban area of Taiyuan city. [Method] By using the theory of geographic informatic images supported by RS and GIS, the land use change images during the period of 1990-2001 in urban and suburban area of Taiyuan city were constructed. Based on the research of land use changes images, the character of land use change in research area was analyzed and the ecological effects was calculated between 1990 and 2001. [ Result ] The result show that the area of farmland, rangeland and waters decreased from 1990 to 2001, the dereased area of farmland was the most, while the area of garden plot, unused land, forest land and construction land increased, of which, the inecreased area of forest land were the most. The change of land use resulted in the ecosystem service value of Taiyuan increased from 1 202.15×10^6 yuan in 1990 to 1 251.49 ×10^6 yuan in 2001, the average increase rate was 0.37%. [Conclusion]The most land use changes category was the transformation from farmland to unused land, the transformation from farmland to construction land was the next. The degeneration of rangeland, farmland and the increase of unused land brought certain negative effects. By the empirical analysis, the way of geographic image was a very effective method in analyzing land use change and ecological effects.

关 键 词：太原市城区及近郊区 土地利用变化 图谱 生态系统服务价值 

分 类 号：F301[经济管理—产业经济]