Spatial-temporal Characterization Of Urban Landscape Patterns And The Urban Thermal Environment Using Landsat TM/ETM~+ Data

At present, world urbanization accelerates greatly, and world’s population in urban areas increases, particularly in developing countries, which profoundly influences economic development, as well as ecosystem functions. One of the key impacts of rapid urbanization on ecosystem functions is the effect of urban heat island (UHI). The synthesized mechanism study of UHI provides a new paradigm for the study of urban landscape ecology or urban ecology environment in theory, at the same time can perfect or promote the methods and system info of landscape ecology, can also support the decisions for urban planning, urban constructing, environment protecting and regional sustainable development.This study, selecting Fuzhou city as an example area, firstly discloses the evolving characters of spatio-temporal pattern of all kinds of land use/land cover and surface land temperature with information obtained by remote sensing methods. Based on land use/land cover, the paper uses Fragstats and the theory of landscape ecology. Since surface temperature represents the process of surface energy, we examine the causative factors of UHI process, which includes the intensity of human activity, landscape patterns and land use/land cover. We analysis the relationship between landscape pattern and thermal environment effect, and applied principal component analysis (PCA) on the three causative factors.