| Ecological space provides an important guarantee for urban ecological security and people’s healthy life.Reasonable urban ecological space layout is the basis for urban ecosystem to maintain its integrity and function.However,with the rapid development of urbanization,ecological problems affecting human survival and development,such as sharp decline in natural ecological space and fragmentation of landscape,have become increasingly prominent.Under the background of land space planning,exploring the construction method of urban ecological space system and promoting the optimization of ecological space pattern have become the focus of current ecological research.Based on this,combined with the relevant theories of urban ecological space,this paper summarizes and analyzes the research progress of ecological space at home and abroad,integrates relevant technical methods,and takes Chuzhou city as an example to put forward new ideas for the construction and management of urban ecological space system from the perspective of land and space planning.From the evaluation of ecological function importance and ecological sensitivity,the ecological space evaluation and ecological space importance identification are carried out;The ecological source is determined by combining the extremely important ecological function area with the ecological control red line,and the comprehensive resistance surface is constructed by selecting factors such as land use type,vegetation coverage type and slope,and the ecological corridor is identified to establish the urban ecological space system.According to the results of ecological evaluation and the ecological space system,a zoning and grading management and control system is established,and different grades of ecological space are protected by grading and classification.The main conclusions are as follows:(1)The importance of ecological function in Chuzhou city was evaluated from three aspects:biodiversity conservation,water conservation and soil and water conservation.Then,the ecological sensitivity of Chuzhou city was evaluated by five indicators:topographic conditions,ecosystem types,geological disaster conditions,human activities and hydrological conditions.After analysis,I,II and III ecological spaces are obtained.The area of Class I ecological space is 351.22 km~2,accounting for 25.16%of the total area,which is mainly distributed in Langya Mountain Forest Farm,Huashan area of Shiji Town and Huangfushan Forest Park area where Jin Ryu is connected with Zhangguang Town.Class II ecological space covers an area of401.07 km~2,accounting for 28.74%of the total area,mainly distributed in the central and western parts of Chuzhou city.Class III ecological space covers an area of 300.09 km~2,accounting for 21.50%of the total area,mainly distributed in the east of Chuzhou city,especially near the urban built-up area.(2)Combined with the ecological background of Chuzhou city,the ecological space system model of the study area is determined to be the layout model of"corridor network+wedge radiation".According to the construction ideas and technical methods of ecological space system,13 ecological sources and 25 optimal ecological corridors are identified.8 potential ecological corridors;There are 27ecological corridors with a total area of about 128.67 km~2;There are 15 ecological pinch points with a total area of about 284.49 ha,and 24 ecological obstacle points with a total area of about 145.26 ha.Combined with urban ecological green wedge,urban landscape river and other green belts,the corridor-patch secondary ecological network is formed,and the urban ecological space system with"one belt,two corridors,three wedges and seven sources"as the main body is formed.(3)The research on the management and control of the ecological space under the jurisdiction of Chuzhou City is carried out.Firstly,the management and control principles of global marking,clear management and control objectives,rigid-elastic combination,zoning and grading management,comprehensive management,and limited incentive coexistence are introduced,and the zoning and grading management and control system is established.Among them,the ecological core protection area under the jurisdiction of Chuzhou City has a total area of 479.18 km~2.The total area of ecological conservation and restoration area is 401.07 km~2;The ecological development transition zone covers a total area of 300.09 km~2.Finally,the control strategy and implementation guarantee strategy are put forward.Combined with the urban ecological space system,the hierarchical management and control system of structural green space is put forward,and the hierarchical management and control strategies are put forward for different urban ecological elements.Finally,from the aspects of legislative guarantee,comprehensive coordination,strengthening talent construction and technical support,encouraging public participation and supervision and feedback,this paper puts forward the implementation guarantee strategy of ecological space in Chuzhou city.Figure[46]table[22]reference[105]... |
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