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The rapid development of urbanization, making large-scale gathering of industry and population, urban environmental pollution, ecological destruction and threatened the health of residents. Urban forest plays an important role in maintaining and improving the urban ecological environment, to understand the evolution of the law of the forest landscape pattern to study the relationship between forest landscape patterns and ecological processes of reconstruction of the forest landscape pattern to predict the trend of the development of the forest landscape, the optimization of the ecological environment of the urban landscape reasonable use of the land as well as urban planning has important guiding significance. On the basis of summing up the domestic and foreign urban forest, urban forestry research theories and methods of landscape ecology theory, the use of remote sensing and geographic information systems theory and technology, urban agglomerations \Km2) as the object of study, the MSS, TM / ETM and CBERS6 on remote sensing image data sources, according to the actual situation of the country \woodland, other woodland, arable land, waters and land for construction, landscape index, transfer matrix and Kappa index, a combination of qualitative and quantitative analysis methods for the analysis of urban forest landscape dynamics. The main findings are as follows: 1. Farmland and woodland landscape types in the core area. Various landscape types in 2007, arable land accounted for 40.92% of forest proportion of 27.75%, the other woodland proportion of 17.44%, accounting for 0.30% shrub land, construction land accounted for 8.56%. 2007 plaque 4275, the fractal dimension of 1.0872, dominance is 0.5213, the separation is 0.9841, the diversity index of 1.4246, and the evenness of 0.7321 gathered 93.937. 2 core area of ??landscape heterogeneity increased The degree of fragmentation enhanced, reduced dominance. 1973-2007 landscape indices change, the increase in the number of patch increased heterogeneity of the study area landscape, landscape fragmentation is also to some extent increase; resolution enhancement, landscape tend to disperse distribution tends to be complex; dominance gradually The decline reflects the advantage of the landscape types of plaque minimize. Between the core area of ??the landscape types converting large quantities of high frequency. 1973-2007 landscape type conversion, the construction land area increased significantly reduce rapidly occupied the surrounding farmland and woodland, farmland and forestland. Woodland, woodlands and other woodland area decreased, increased bush land. Arable and forest land converted to construction land, a large number of high frequency; between farmland and woodland as well as between woodland and forest conversion of large quantities. 4 core area landscape change greatly. 1973-2007 spatial location changes 0.0276, the number of changes to 0.1054, the spatial location of the change is less than the number of changes the integrated major changes in the landscape; various Kappa index year lost information display, the the Kappa index changes in the accelerated change, the annual loss information increased, the position changes and volume changes of landscape type faster. 5 core area consistent rate decreases. 1973-2007, quantity consistent rate of 0.1536, position coincidence rate is 0.6347, the number corresponding to the rate of change is greater than the rate of change of position of, respectively, 0.0508 and 0.0180. Position consistent rate throughout the concordance rate proportion, more than 0.6000 1973 to 2000. Landscape space consistent rate gradually increased space consistent decrease after 2000, to reflect the location of the core area of ??the landscape changes and the number of changes to speed up. Overall, the study area urbanization is the main driving force of landscape change. Farmland and woodland CZT core area of ??the landscape matrix plays a dominant role in the overall control landscape structure, function and ecological security. Management countermeasures of forest landscape pattern is based on the theory and basic principles of the regional landscape ecological planning, along the river to increase the number of green space corridor, the landscape can form a network structure, better play the economy with green space to keep water and soil, conserve water, improve the ecological environment conditions role; establish around the city area green belt, to establish a greenbelt along the highway line, fragmented forest patches in the study area by forest corridor linked solve the the CZT core area of ??forest landscape fragmentation problem.
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