RS And GIS-based Research On Shanghai Land Use/cover Change With Respect To Thermal Environmental Effect

Land use/cover change (LUCC) is increasingly attracting world wide attention in recently years, and has become one of essential research part of global environmental change. With the increase of urban economy and population, especially with the acceleration of urbanization process, a lot of serious urban environment problems such as urban heat island (UHI) are emerging. However, researches on urban climatology have been fewer, owing to the complexity of interactions of thermal infrared and microwave radiation with the atmosphere and urban surface. The use of remotely sensed data offers an objective and convenient method for the researches on such field. In 1990s, Shanghai enjoyed a rapid development with the each passing day and the urbanization in the suburb of Shanghai has greatly quickened, thus leading to an increasing attention to the problems of thermal environment. Research on the urban land use/cover change and its thermal environmental effect plays a significant role on monitoring urban thermal pollution, investigating the thermal source and improving the thermal environment of Shanghai city or even the whole world.In chapter one, the research background, subject significance, technical route and main context are briefly given. The general situation of research area is introduced, mainly focusing on the land resource situation.In chapter two, some pre-processes are given to the multi- temporal Landsat TM/ETM+ remote sensing image. Traditionally, land classification method is based on fieldwork, which is costly, time-consuming and difficult to organize. The development of the remote sensing and Geography Information System (GIS) provides a better way for the acquisition of urban land use information. In this chapter, multi-step-classification method for land use classification is discussed, which is proved to be more advantage over the conventional supervised classification and object-oriented method.In chapter three, the overall land use/cove change situation and characteristic in Shanghai from 1994 to 2003 is analyzed. The driving mechanism for land use/cover change, such as physical environment, economic growth, policy regulation and...