基于GIS与RS的喀斯特山地土地利用动态变化研究——以贵阳市为例

发布时间：2018-04-10 09:47

本文选题：RS　切入点：GIS　出处：《江苏农业科学》2016年11期

【摘要】：土地利用变化是引起喀斯特生态系统演变的最主要影响因素之一,随着城镇化的快速推进,城市土地利用发生了较大的变化。运用RS与GIS技术方法对2001、2013年2期的遥感影像进行处理,提取贵阳市二环内土地利用信息,并对该区土地利用动态变化规律进行研究,以期为研究区土地资源可持续利用及生态环境建设提供一定的参考依据。研究结果表明:(1)研究区土地利用类型以耕地、林地和建筑用地为主,三者总占比大于97%,占绝对优势;(2)2001—2013年研究区建筑用地面积明显增加,水域面积略有增加;耕地面积明显下降,林地面积和未利用地少量减少。(3)单一土地利用动态度分析表明,各地类变化速度从快到慢依次为未利用地建筑用地耕地林地水域;就综合土地利用动态度而言,则速度从快到慢依次为:未利用地耕地水域林地建筑用地。(4)从土地利用综合程度来看,研究区土地利用正处于发展期,土地利用集约化程度在不断提高。
[Abstract]:Land use change is one of the most important factors that cause the evolution of karst ecosystem. With the rapid development of urbanization, great changes have taken place in urban land use.RS and GIS techniques were used to process the remote sensing images of 2001 and 2013, to extract the land use information in the second ring of Guiyang city, and to study the dynamic change of land use in this area.In order to provide a certain reference for the sustainable use of land resources and the construction of ecological environment in the study area.The results show that the main types of land use in the study area are cultivated land, woodland and construction land. The total proportion of the three types is more than 97. The area of construction land in the study area increased obviously from 2001 to 2013, and the area of water area increased slightly from 2001 to 2013.The analysis of the single land use dynamic degree shows that the change speed of the local category is from the fast to the slow, and the forest land area of the unused land construction land is the forest land water in the order of the change of the cultivated land area, the forest land area of the unused land and the unused land is reduced slightly.As far as the comprehensive land use dynamic degree is concerned, the speed of land use is in the order of fast to slow: unused land, water, woodland, construction land, etc.) from the comprehensive degree of land use, the land use in the study area is in the period of development.The degree of intensive land use is constantly improving.
【作者单位】：贵州财经大学管科学院;
【基金】：国家商务部联合研究项目(编号:2016SWBZD12) 贵州省科技计划(编号:黔科合基础[2016]1521-1号) 贵州省高校优秀科技创新人才支持计划(编号:黔教合KY字〔2012〕091号)
【分类号】：P208;P237;F301.2

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