| Urban ecological environment as a major component of urban forest patches with the "green lung" of the role, its landscape value, ecological value, economic value and social value in all aspects of urban development is embodied, so the Ecology study of urban forest resources have great significance. People on the ecological environment as the increasing requirements to build eco-city of Chongqing's urban development in the inevitable trend, the forest resource conservation and rational planning, is the process of eco-city construction work among the important elements, In this article, from the macro-scale and meso-scale, make a study on the Chongqing urban area of forest patches.In the theoretical part of the article, summed up the contents and dynamics of landscape ecology, urban forestry, landscape pattern and pattern optimization, combined with ecology, landscape aesthetics, landscape and other disciplines theory, make them be the theoretical basis for this research paper.Macroscopic scale, according to the main city of Chongqing and the actual geography of the forest patch status, through the landscape pattern analysis, use the geographic information systems and related professional software, select the landscape pattern index on the status of the main features of urban forest patch, pattern characteristics analyzed and evaluated reached the following conclusions:(1) Chongqing City mainly composition with a few large patches and most small patchs, the number,size and location distributed uneven;(2) The shape of forest patches are more single, edge fold less, the lower patch fractal dimension, indicating the forest patches in the local area, subject to more severe interference from human activities;(3) Chongqing City landscape diversity index of forest patch was 1.0231, its the lower value, reflecting the heterogeneity of the main urban forest landscape in less; the dominance index was higher, at 0.7453, landscape evenness index was 0.5624, Note the different types of forest landscape patches unevenly distributed, there are a few patch types dominate the landscape to some extent the phenomenon.(4) Within the main urban forest patch density and patch edge density are small, low level of landscape fragmentation;(5) Forest patches on the whole aggregation and spatial relations are better connectivity, the biological material, energy and information exchange was more smooth; but the minimum distance index showed that the overall connectivity of forest patches is less, between the large patches scattered distribution of small patches, not to good connectivity.In conclusion of the main city property characteristics and patterns of forest patch characteristics based on the combination of their resources and capabilities required for the analysis of conclusions reached, corresponding to the pattern proposed optimization ideas and ways, from the forest patch number, size and proceed to adjust the shape, according to local conditions, to the retention, expansion and new ways of forest patches, to improve the number of forest patches, uneven distribution of the scale of the situation, rich forest patch edge forms, to improve the landscape of forest patches and landscape heterogeneity diversity, to enhance landscape connectivity, and thus improve the landscape pattern, the main urban ecological environment and socio-economic development momentum.Medium-scale study, from the ecological sensitivity, visual landscape nature of biological conservation and biological point of view of connectivity, select the Jialing River in the city built in the region, the Changjiang River intersects with the inner area surrounded as middle-scale study area, make a analysis of its field survey and summary of the urban construction and human activities on forest patch number, size and shape of the interference effects, and the classification of the forest patch model for the ecological evaluation, summed up the features in the landscape, ecological functions and social service functions on the advantages and disadvantages, combined with land use and urban planning direction, made its way to ecological planning, medium-scale studies on the ecological environment and forest landscape patterns provide some theoretical guidance ideas and practices.
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