Based on Landsat8 multi-resolution remote sensing image fusion of urban heat-island difference analysis

摘要

Over the years, with the accelerating of city construction, urban heat-island effect has become increasingly significant. According to meteorological data of nearly ten years, some parts of the regional land surface temperature is higher, and then it influence people's introduction and living directly. At the same time it also affect the ecological environment of the earth. This article bases on the Landsat8 remote sensing image of 2014, through the different resolution of image fusion to analyze the differences surface temperature of the study area and forecast the future development tendency. Research finding:in different resolution, due to details of the objects reflecting obviously differences, affected by it, the surface temperature also exists obvious difference. The lower resolution, the surface temperature difference is smaller;on the contrary, the higher resolution makes surface temperature difference more significant. This shows that with the expansion of cities and the change of vegetation, ater, the regional differences of heat-island effect is more obvious. In future development, how to coordinate and plan buildings, factories, vegetation, water, etc will affect the distribution of urban heat-island effect.