Based on a land use map created from a satellite image from 2005,a map of agreenbelt system from 2005 and a map of a planned greenbelt system, a number of ecological networks of Chongming Island were designed using network analysis methods. Using network indices such as α,β,γ indices, cast ratio and corridor metrics, an optimal ecological network was selected among those ecological networks. The optimal ecological network was then overlaid on the existing plans for a greenbelt system on a GIS platform. Then we used landscape spatial pattern analysis and a series of landscape pattern metrics on Fragstats to assess the present situation, the planned greenbelt system and the optimal ecological network for Chongming Island. Our results showed that the greenbelt system plan for Chongming Island was an improvement which indicated by decrease in patch density and increase in edge density, mean patch fractal dimension on the patch level, landscape diversity, landscape evenness, and landscape connectivity. Compared to the existing greenbelt system plan, the optimal ecological network brought a further improvement to the greenbelt system both on quality and quantity of Chongming Island.
戚仁海*, 熊斯顿. 基于景观格局和网络分析法的崇明绿地系统现状和规划的评价[J]. , 2007, 26(3): 208-214.
QI Ren-hai, XIONG Si-dun. Assessment of the current status & planning of the green space system of Chongming Island using landscape metrics and network analysis methods. , 2007, 26(3): 208-214.
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