Land-use And Landscape Pattern Changes And Its Driving Forces In Wuhan Metropolitan Region In Rencent25Years

The land use/land cover is the current domestic and foreign a hot research field, theory and methods have basic mature, research range from the global scale to micro scale, from a single landscape to many landscape, from single phase to the situation of, the application of the deep to more direction. This paper, based on the Wuhan metropolitan region of remote sensing images, the integrated use of RS and GIS technology, to the city circle of land use structure change, land use conversion and land dynamic and change the landscape pattern, analyzes reasons for such changes, and puts forward the corresponding proposal. Full text is divided into five chapters.The first chapter introduction. Summarizes the land use and landscape pattern of the concept and the present research status, and expounds the basic ideas of the research, the research methods and the specific technical route.The second chapter research area and the general survey data sources and processing. Briefly introduced the wuhan city circle of administrative districts and historical evolution, the basic condition of natural geography and the recent development of the regional integration, this paper described the various data sources and remote sensing data, Globcover data processing process, and the data processing precision is evaluated.In the third chapter types of land use change. First by sensing data, statistical area in the1980s、1990s、2005and2010types of land use of six kinds of area, analyzes the nearly25years of overall city circle of the changes of the land use structure and the change of the various types of land area, using the ARCGIS software calculated regional transfer matrix of land use and the conversion, and made into overall regional land use conversion figure, based on this study city circle land dynamic. Wuhan city circle overall land use is, farmland accounts for about62.75~70.07%to the total surface, forest land accounts for about23.87%to15.31, and3.99~7.5%grassland accounts for about, waters accounted for about5.41-8.56%, construction land accounted for about0.46~1.68%, did not use the land accounted for about0.03~0.37%. Farmland dominated status, forest land, meadow lower proportion, the proportion of relatively high waters, a small proportion of the construction land, but is growing rapidly, did not use the land development degree is high.The fourth chapter on the landscape structure analysis. We established the index system of the landscape index, and briefly landscape pattern theoretical basis and formula, GRID data processing and the landscape pattern calculation, specific analysis in various areas near city circle in the past25years, the changes of landscape structure, and analyzes the reasons for such changes. Overall, nearly25years of Wuhan metropolitan region, land use and landscape pattern change very rapidly, and more than any time in history, reflect human activities on land use and landscape pattern drastic influence, regional land after a period of growth, the area tends to stable, tended to become optimization, forest land, grassland area is down sharply, situation is not optimistic, the waters area atrophy, water environmental degradation, construction land continual growth, the landscape pattern is more complex, did not use the land get some degree of development. The land use change the landscape pattern of the main driving force factors: the rapid population growth, the high-speed economic development, urbanization and traffic construction and national policy constantly adjust. Especially policy adjustment to regional landscape pattern are far-reaching effects, such as the household contract responsibility system, converting cropland to forest and farmland policy, new rural construction of socialism and two type society construction, etc.Chapter5conclusions and Suggestions. Summarizes the nearly25years of overall city circle of land use and landscape pattern change condition, the author puts forward the guided by the scientific development concept, insist on the path of sustainable development and advance city circle of ecological agriculture, ecological industry, ecological city and ecological tourism development, so as to realize the optimization of the regional landscape pattern. Finally summarize experience and reflection is insufficient, provide reference for further research.