| Urban green space is an important part of the urban ecological environment,also is an important indicator of the city’s comprehensive quality. Rational urban green landscape layout can enhance urban green space management,and to be an important guarantee of sustainable urban development.While the rapid urbanization of urban green space caused by erosion, resulting in excessive urban green space become industrial land, building land, a serious impediment to the functioning of urban green space. The spatial structure of urban green landscape is analyzed to provide a scientific basis for eco-city construction. In this paper, With 3S technology support, high- resolution remote sensing images Panzhihua region rate as the main data source, and a large ferry area as a study area, use ENVI5.3 and ArcGIS10.0 software for remote sensing image by stitching, cutting, extraction green information processing, complete urban green landscape achievements of the production plans and the establishment of urban green space system database. On this basis, the use of landscape pattern analysis and geostatistical analysis of MSI、SHDI、SHEI、MPFD、FS index of the urban landscape of green area spatial structure analysis. Meanwhile, according to data from MODIS NDVI vegetation from 2000 to 2012 covering the area between Panzhihua and distribution pattern of change related research.The following conclusions:(1)In Dadukou Area, there are total green area of 219.35hm2, green coverage rate reached 38.3 percent, has not yet reached the Panzhihua city overall planning of urban green space near the proposed interim target rate. the total number of green patches of 2565. Green landscape is divided into parkland, protection green land, living green, green public building, road green space, scenic and recreational green space, river green space and other ecological green space. All kinds of green types, public and residential green building green areas have absolute superiority in the number and plaques account.(2)Various types of green patches rating scale distribution is not balanced, with small patches dominated overall, while protective green with large patches majority.(3)Various types of green patches serious fragmentation. Highest road green space fragmentation, fragmentation minimum degree of protection green. Dadukou area of urban green space diversity index is 1.73, uniformity index of 0.79, fragmentation index of 0.449, the degree of diversity is not in high levels of green state, it still need have an improvement.(4)Panzhihua vegetation coverage is generally good, with high coverage based. At the same time, differences in the spatial distribution of the vegetation cover and clear, vegetation cover and high in Miyi and Yanbian, and low vegetation cover within the scope of Panzhihua City.(5)In recent years, Panzhihua vegetation cover is in the stable and sustainable growth, but some regions severely reduced vegetation cover, mainly in the Yanbian in northeast Miyi river and the western region, where the region and the southern districts of Panzhihua City Panzhihua. Since the distribution is more concentrated, then continuous development of industrial land and construction sites results in the reduction of green space. |
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