基于遥感影像的重庆市城市热场环境效应研究  

A Remote Sensing Image-Based Study of the Environmental Effects of Urban Thermal Field in Chongqing

作　　者：王冰[1] 田永中[1] 易佳[1] 赵克会[1] 高志勇[1] 王瑞青[1] 

机构地区：[1]西南大学地理科学学院,重庆400715

出　　处：《西南大学学报（自然科学版）》2009年第12期134-139,共6页Journal of Southwest University(Natural Science Edition)

基　　金：国家科技部科技攻关项目之西部开发科技行动重大项目(2005BA901A01);国家科技支撑计划资助项目(2006BAC08B0409);重庆市气象局2007年度科技创新项目

摘　　要：利用LandsatTM影像定量反演了重庆市的地表温度(LST)和植被指数(NDVI),引入剖面分析方法来研究二者的相关性,并建立了不同土地利用类型和不同多样性水平上的线性回归函数.结果表明:重庆市的热场环境明显,地表温度和植被指数在总体上呈线性负相关,地表温度最高值不是分布在城市中心的商务区,而是出现在城市边缘的工业企业用地区;建设用地的热效应最明显;城市的景观多样性对热环境是反向的.The paper quantitatively retrieves the land surface temperature （LST） and the normalized difference vegetation index （NDVI） in Chongqing city based on LandSat TM images,and introduces the profile analysis to study their correlation and then establishes the linear regression equations by different land use types and different SHDI （Shannon-Weaver Diversity Index）.The results show that the urban thermal field of Chongqing city is obvious,and LST and NDVI are,in general,in linear negative correlation.The highest LST does not occur in the business districts of the central area of the city but in the industrial districts on the edge of the city.The land for buildings has the most obvious heat effect.Landscape diversity of the city is in a reverse relationship with the hot environment.Finally,the paper proposes some strategy to alleviate the urban thermal environment as the reference for future urban development and planning.

关 键 词：城市热场 地表温度 植被指数 多样性 重庆市 

分 类 号：P463.3[天文地球—大气科学及气象学]