论文部分内容阅读
以苏州为研究区域,选择1986年Landsat TM、2006年Landsat ETM+遥感图像为主要数据源,分别提取下垫面类型和地表温度,研究景观格局指数的粒度效应,并在适宜粒度下分析景观格局的演变特征,进而研究其与热环境变化之间的关系。结果表明,研究区20多年来景观破碎化程度、斑块形状复杂程度与景观多样性变大,而聚集程度变低,热场变异指数增大区域的景观格局指数变化更为明显,这说明下垫面格局演变对热环境变化具有一定的影响作用。
Taking Suzhou as the research area, Landsat TM (1986) and Landsat ETM + (remote sensing image) in 2006 were selected as the main data sources. The types of underlying surfaces and surface temperature were extracted, and the grain size effect of landscape pattern index was studied. The landscape pattern Evolution characteristics, and then study its relationship with the thermal environment changes. The results show that the degree of landscape fragmentation, the complexity of landscape shape and landscape diversity in the study area have increased over the past 20 years, while the degree of aggregation becomes lower and the change of the landscape pattern index in the area where the thermal field variation index increases is more obvious The evolution of bedding pattern has a certain influence on the thermal environment.