| The people are so concerned about environmental issues at present, however environment is still in accelerating the destruction. Why we have been doing one thing, but always do well? Not because we less capacity, but we have wrong methods. The traditional methods of urban construction is planning at first, and then building it until the city gradually formed the scale. At the same time environmental problems appeared, and then depends on ecological planning controlling. All of this always a remedial measure. Actually ecological planning should be before the urban planning. Natural environment is not the city's subsidiary, On the contrary the city subordinate to the natural pattern. People should obey this pattern and development. Only in this way we can keep possible sustainable development.This article choose the ecological systems in Yunlong demonstration area to study, Based on field survey and case analysis. The article can be divided into four aspects of study. Analyzing the ecological elements of the demonstration area, and evaluating urban forest ecosystem in demonstration area. Building ecological security pattern and key ecological infrastructure. And then summary of the status quo existing problems and to provide the feasibility of policy. Based on ecological systems constructed under the city planning hopeing use this kind of planning to try to give h built urban, building urban and the future urban a reference views. The conclusions are as follows:(1) We carried out the analyze from ecological elements such as location, geology geomorphology,soil,waters,plans,animals, fungi in Yunlong demonstration area, and then summed up the characteristics of their environment.①According to the Regional Planning, CZT urban agglomerations will form the spatial structure--One wholehearted dual-axis dual-band. The Yunlong demonstration area is a key node of this spatial structure. In building the green space system---One-band,two cycle,multiple corridor in Zhuzhou, Yunlong Metro unique landscape pattern plays an important role.②Yunlong demonstration area have rich species, variety vegetation types, superior animal and fungi sources. Taking into account the sustainable urban development, we must protect and improve the habitat of living things, a scientific and rational planning is needed.③Demonstration have great green coverage. But urban forest structure does not meet the direction of sustainable development. We need to improve the urban forest structure and to optimize the ecological benefits of woodland.(2) We use landscape ecological environment evaluation model to evaluate the overall ecological demonstration area.By comparison with the national average, demonstration area a good ecological environment. But the overall index below the national average. The reason is irrational landscape layout, we need layout of the urban forest landscape demonstration area for scientific and rational planning.(3) Learning from nature, Biodiversity, Sustainable development are the guiding principle in Yunlong demonstration area. We summarize the problems in demonstration area such as unreasonable landscape layout,uneven green space distribution. the weakness urban forest ecosystem services,and combine the character of nature sources with characteristics of ecological environment. Treating nature as matrix, and then on the basis of nature pattern building ecological security pattern.We treat mountain,river, field, city as the main style characteristics to rebuild ecological security pattern as followed:"ecological matrix---green corridor-----green plaque" and to form one cycle,one band, two wedge,three,two zone, the connecting green corridor, uniform distribution parksThe ecological infrastructure planning must satisfy the basic need of ecological footprint. Not only should co-ordinate urban and rural green space to ensure the green area and the rational distribution of green, but also should focus on improving the green space quality make sure we get the maximize ecosystem services. |
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