| 摘要: |
| 区域土地利用变化和建成区景观格局特征，是反映区域土地利用水平和优化土地利用结构的重要依据；在RS和GIS的技术支撑下，以TM遥感数据作为基础数据源，运用人机交互解译的方法分别提取了万州区2007年、2012年、2018年三期土地利用现状数据，并通过土地利用变化相关分析模型及景观格局分析方法对研究区土地利用状况和建设用地扩展特征进行了系统分析与研究；结果表明：十多年来，研究区土地利用综合水平处于中等水平，土地利用结构保持稳定，耕地、林地为区域内主要土地利用类型；耕地、林地流向水域和建设用地的特征比较明显，也体现了库区土地利用结构变化的主要特征；城区建设用地的拓展方向是西南和东南方向，其重心迁移轨迹经历了由东南向西南迁移的过程；建成区景观斑块的破碎化程度较高，表现出相当强的人为特征，平均景观分维度指数处于较低水平，且有下降的趋势，说明研究区受人为干扰较大；揭示了土地利用结构变化和建成区景观格局特征，为后三峡时代万州区新一轮国土空间规划、资源环境保护和社会经济的可持续发展提供借鉴与参考。 |
| 关键词: 土地利用变化 景观格局 万州区 GIS和RS |
| DOI： |
| 分类号: |
| 基金项目: |
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| Study on Land Use Change and Landscape Pattern of Construction Land in Wanzhou District of Chongqing Based on GIS and RS |
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LI Bin, LI Hui, CAO Ke1,2,3
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1. School of Public Administration， Chongqing Technology and Business University， Chongqing 400067, China;2. Yangtze Upriver Economic Research Center， Chongqing Technology and Business University， Chongqing 400067, China;3. Chongqing Finance and Economics College， Chongqing 400715, China
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| Abstract: |
| Regional land use change and landscape pattern characteristics of built-up area are important basis for reflecting regional land use level and optimizing land use structure.Under the technical support of RS and GIS， this paper takes TM remote sensing data as the basic data source， extracts the land use status data of Wanzhou District in 2007， 2012 and 2018 by using the method of human-computer interaction interpretation， and systematically analyzes the land use status and construction land expansion characteristics of the study area by using the land use change correlation analysis model and landscape grid analysis method. The results show that in the past 10 years， the comprehensive degree of land use in the area is still at a medium level， the structure of land use in the study area has remained stable， and cultivated land and forest land are the main types of land use in the area. The characteristics of land use flow are relatively obvious， and cultivated land， forest land flow to water area and construction land are the main trends of land use change. The main expansion direction of construction land is southwest and southeast， and its center of gravity has experienced the process of migration from southeast to southwest. The fragmentation degree of landscape patches in the built-up area is relatively high， showing strong human characteristics. The average landscape sub dimension index is at a low level， indicating that the study area is greatly affected by human disturbance. The changes of land use structure and the landscape pattern characteristics of the built-up area revealed in this study can provide reference for the new round of land space planning， resource environment and sustainable development of social economy in Wanzhou District in the post era of Three Gorges. |
| Key words: change of land use landscape pattern Wanzhou District GIS and RS |
