Research On Lucc In Downtown Jinhua Based On Remote Sensing And Geographic Information System

Along with the globalization, informatization, city changes a process to accelerate, and population growth, environmental pollution, climate change and other global issues increasingly become acute, on land use/land cover change (LUCC) research is increasingly considered to be a critical and urgent problem. City expansion as human alteration of land use/land cover change of the main show, has become one of the important content of the LUCC.This article take the Jinhua urban district (District of Wucheng and the Jindong) as the study area, from1992,2000,2005and2008in the remote sensing images as the main data source, in the Erdas software by using the maximum likelihood method for remote sensing image in land use classification. Then, the use of geographic information system in ArcGIS software, extraction of Jinhua urban land use/cover change information, by calculating the area of the transfer matrix, dynamic degree of land use, land use degree, land use spatial gravity change, analysed Jinhua city nearly16years land use/cover change in the space. Finally, combined with the Jinhua City Economic and social statistical data analysis of the driving factors of land use/cover change. The research results can not only for the city of Jinhua city planning, management practice to provide scientific decision-making basis, at the same time, can also realize the city sustainable development city group to provide scientific, effective theoretical support.Through this study, the following conclusions were obtained: (1)By calculating the area of the transfer matrix, obtained the Jinhua City16years of various land use types of mutual transformation relationship. Analysis results show that, Jinhua city farmland area decreases in year after year, mainly transformed into construction land, construction land is increasing year by year, Lin Yuan land and water area change. In four types of land use, the change of cultivated land area is the largest, from1992to2008, a decrease of509.8985km2(2) Through a single and integrated land use type dynamic analysis, reach Jinhua urban residents and mining with earthquake attitude were15.16%,10.01%and8.33%, the area gradually increased, but the growth rate of larger. Cultivated land dynamic degree were-3.05%,-3.23%and-7.88%, farmland area decreases, and from2005to2008, the rate of decline in accelerating. The waters of the dynamic degree of respectively2.86%,2.03%and-3.08%, dynamic degree was the first positive negative, said that from1992to2005the waters of the area has been increased year by year. But in2005and2008, water area and decreased year by year, and the rate of decline than early fast growth. Lin Yuan land dynamic degree respectively0.84%,0.91%and1.22%, dynamic degree was the first positive negative positive again trends from1992to2000, says Lin Yuan area is on the increase, from2000to2005Lin Yuan area decreased, but reduced amplitude. Between2005and2008, Lin Yuan’s area is increasing ceaselessly, increased significantly greater than the initial amplitude reduction. Integrated dynamic degree from1992to2000of1.44%,2000to2005of5.48%,2005to2008of9.81%. The dynamic change of land use types reflects the degree of interference of a gradual increase in speed at a constant speed, and interference. As the economy of Jinhua city grows speed to accelerate, human activities on land use quantity, structure and other aspects of the impact will increase significantly.(3) Through the analysis of land use degree in Jinhua City, the comprehensive index of land use degree is increasing constantly, from1992of262to2000of268, from2005of277to2008of282. The extent of land use changes in the gap between the fluctuations. But from the degree index of land use range (100-400), Jinhua city use degree belongs to medium using state, there is room for growth. (4) Through the analysis of land use spatial changes of Jinhua City, the four types of land use spatial distribution in the center of gravity changes gradually, but mainly concentrated in the central area, of which, residential and industrial land in the center of gravity gradually to the east to offset the center of gravity to the west, farmland and tends to shift.(5) Combined with the social and economic statistical data analysis to drive Jinhua urban land use/cover change factors, which influence the land use/cover change is the dominant factor in the social and economic development and population growth of the conclusion.