基于多时相遥感数据的常州市城市热景观变化特征  

Characteristic Change of Urban Heat Island in Changzhou City Based on Multi-Temporal Remote Sensing Data

作　　者：佟光臣 林杰[1] 陈杭[2] 顾哲衍[2] 唐鹏[1] 张金池[1] 

机构地区：[1]南京林业大学林学院江苏省南方现代林业协同创新中心江苏省水土保持与生态修复重点实验室,南京210037 [2]江苏省水利勘测设计研究院有限公司,江苏扬州225127

出　　处：《水土保持研究》2017年第1期207-212,共6页Research of Soil and Water Conservation

基　　金：国家自然科学基金(31200534);江苏高校优势学科建设工程资助项目(PAPD)

摘　　要：为分析20多年来常州城市热景观时空变化特征,选用4景TM/ETM+影像(1986年、1992年、2000年、2010年)为基本数据源,在RS,GIS技术以及景观分析工具的支持下,分析了常州市区热岛景观格局变化特征。研究结果表明:1986—2010年常州建成区均存在显著的热岛效应。随着城市化进程加快,到2010年城市与郊区的温差达到最大,为35.3K;城市强热岛及其以上等级面积从1986年的8 580.24hm^2增加到2010年的17 725.23hm^2,相应比例从4.58%增加到9.45%,增幅达106.33%;城市热岛等级类型的景观指数分析表明,到2010年高等级的热岛斑块分布范围和强度都明显提高,两环内高等级的热岛片状分布明显。受城市人类活动加剧的影响,各热岛等级斑块的形状逐渐趋于复杂。从景观水平尺度变化来看,2010年热岛景观多样性最丰富,分布最均匀,同时破碎化程度也最高。研究结论可为城市生态建设提供参考。In order to analyze the temporal and spatial variation of the thermal landscape in Changzhou City over the past more than 20 years, choosing Landsat TM/ETM＋ images of 1986, 1992, 2000 and 2010 as the data sources, and supported by Remote Sensing （RS）, Geographical Information System （GIS） and Fragstats tools, we tried to analyze the urban heat island landscape during those years. The results showed that heat island effects were prominence in the construction area of Changzhou City from the year of 1986 to 2010. With the acceleration of urbanization, the thermal differences between urban and rural areas magnified, the difference between the maximum and minimum land surface temperatures reached to 35.3 K in 2010. The area of intense level of urban heat island which included above it increased from 8 580. 24 hm^2 in 2010 to 17 725.23 hm^2 in 1986, the corresponding proportion increased from 4. 58% to 9. 45%, respectively, the increase was 106.33 %. The analysis results of class metrics showed that high-level heat island patche distribution improved obviously both in range and intensity. Two ring high-level heat island distribution of patchy was obvious. The shape of heat island patches become more complicated because of human activities. The analysis results of landscape metrics showed that there was the most abundant diversity and a high degree of heat island landscape fragmentation in 2010, its distribution was also the most homogeneous. The results of this study can provide the reference for urban ecological construction.

关 键 词：城市热岛 景观分析 常州市 

分 类 号：X16[环境科学与工程—环境科学] X87