摘要
城市内部用地结构及其时空演变特征不仅能一定程度上反映出城市社会经济发展水平、预示城市未来发展空间和发展潜力,而且还会直接影响城市人居环境的适宜性,不同地区和不同发展阶段城市内部用地结构存在明显差异。本文基于武汉市1990、2000、2010和2018年4期Landsat TM/OLI遥感影像,采用面向对象多尺度分割算法对武汉市主城区内部用地结构进行了长时间序列遥感监测研究,并在此基础上分析了城市用地结构的时空演变特征。研究表明:1990-2018年武汉市主城区用地结构类型以不透水层、植被和水体为主,用地结构演变模式主要表现为植被和水体向不透水层的转化。主城区内部不透水层面积由1990年的329.73 km^2增加至2018年466.69 km^2,增加了136.96 km^2;植被和水体面积则由1990年的332.74 km^2、318.26 km^2减少到2018年的320.46 km^2、196.39 km^2,分别减少了12.28 km^2、121.87 km^2;裸土地面积较小,整体变化不如前3种用地类型显著。本研究可为城市功能用地制图、城市用地效率分析以及城市生态环境质量综合评价提供参考。
The land use structure and its spatio-temporal evolution characteristics within cities can not only reflect the level of urban economic development, but also predict the future development space and development potential of the city and even directly affect the suitability of the urban human settlement environment. There are significant differences in the internal land use structure of cities in different stages of development and different regions. In this paper, we used object-oriented multi-scale segmentation algorithm to carry out long-term remote sensing monitoring on the internal land cover structure of Wuhan main urban area based on the Landsat TM/OLI remote sensing images of 1990, 2000, 2010 and 2018. Then, the land use patterns in Wuhan were monitored,and the characteristics of land use structure changes during the 1990, 2000, 2010 and 2018 were further discussed. The research shows that: the internal land-use structure in the main urban area of Wuhan city is dominated by impervious surface, vegetation, and waterbody during the recent 28 years. The land use change pattern mainly reflects the transformation of vegetation and waterbody into impervious surface. From 1990 to2018, impervious surface is the main type of land use in the study area, which increased from 329.73 km^2 in1990 to 466.69 km^2 in 2018, which increased by 136.96 km^2. The vegetation and waterbody area decreased from332.74 km^2, 318.26 km^2 in 1990 to 320.46 km^2, 196.39 km^2 in 2018 respectively, which decreased by 12.28 km^2 and 121.87 km^2 respectively;bare land area is too small, and it’s change is not as significant as the first three types of land changes. This study can provide reference for urban functional land mapping, urban land efficiency analysis and comprehensive evaluation of urban ecological environment quality.
作者
陈斌
王宏志
徐新良
陈德超
武新梅
付阳阳
CHEN Bin;WANG Hongzhi;XU Xinliang;CHEN Dechao;WU Xinmei;FU Yangyang(College of Urban and Environmental Sciences,Central China Normal University,Hubei Province Key Laboratory for Analysis and Simulation of Geographical Process,Wuhan 430079,China;State Key Laboratory of Resources and Environmental Information System,Institute of Geographic Sciences and Natural Resources Research,Chinese Academy Sciences,Beijing 100101,China;School of Environmental Science and Engineering,Suzhou University of Science and Technology,Key Laboratory of Environmental Science and Engineering of Jiangsu Province,Suzhou 215009,China;School of Information Engineering,Zhejiang A&F University,Hangzhou 311300,China)
出处
《地球信息科学学报》
CSCD
北大核心
2019年第2期293-303,共11页
Journal of Geo-information Science
基金
中国科学院A类战略性先导科技专项(XDA20010302)
华中师范大学研究生教育创新资助项目(2018CX ZZ001)~~
关键词
用地结构
时空演变
遥感监测
不透水层
制图
land cover structure
spatial-temporal evolution
remote sensing monitoring
impervious surface
mapping
