成都市热力景观空间格局分析

城市热力景观空间格局是城市附属物和城市活动性在热场方面的综合表现。使用2008年11月23日的Landsat5/TM数据,将第6波段反演为亮温,并按温度值的高低把热力景观分为7个类型;借鉴景观生态学的原理和方法,以破碎度指数、多样性指数、均匀度指数和优势度指数为评价指标,对成都市三环路内约200km2热力景观空间格局的研究结果表明：5个行政区的热力景观格局指数存在显著差别,如锦江区的破碎度指数最大,为0.924,成华区的最小,为0.559,指数大小与城市热力景观类型的分布特点密切相关。这些结果对于分析和研究城市整体格局、城市规划和环境保护等具有应用意义。

Analysis of Spatial Patterns of Thermal Landscape in Chengdu

The spatial pattern of thermal landscape in a city is a holistic expression of urban attachments and activities in respects of thermal field.In this paper,by using the landsat5/TM data dated Nov 23,2008,waveband 6 was inverted into brightness temperature and according to temperatures the thermal landscapes were classified into seven types.Referring to the theory and methodology of the landscape ecology,took the fragmentation index,diversity index,evenness index and dominance index were used to study the spatial patterns of thermal landscape in an area of about 200 km2 within the Third Ring Road of Chengdu.The results showed that there were significant index differences among the five administrative districts.For example the maximum and minimum fragmentation was 0.924 and 0.559 appearing in Jinjiang district and Chenghua district respectively.The magnitude of index is highly relevant to the distribution of types of thermal landscape in a city.The results are helpful for analysis and study of urban pattern,urban planning and environmental protection.