Research Of The Block Scale Green Space Structure According To The Habitat Diversity

Since the 21st century,China’s national economy has been improving,urbanization has been progressing rapidly,a large amount of land has been planned for construction,natural green space has been encroachment,natural habitat has been gradually lost,and urban ecological environment has been deteriorating.However,there is an increasing demand for green space,but the less able to exert the ecological efficiency of the green space,adapted to the green design method has some systematic still exist.At the same time,given that blocks the carrier in the urban space structure can play a role,which forms a connecting link between the preceding and typical and can be copied.Therefore,this paper studies the structural model of green space in block units,aiming to put forward the structural model of green space in block units with habitat diversity,increase the ecological benefits of green space in block units,so as to improve people’s living environment and enhance the level of urban biodiversity.Based on landscape ecology,biodiversity theory and other relevant theories.This study adopts literature research,computer simulation,field investigation,summary and comparative analysis to study the structure and quality of green space.Firstly,the common structure model of green space in Xi ’an was summarized.Secondly,the habitat condition evaluation model was established,and the coupling relationship between habitat conditions and green space structure was searched through field investigation and evaluation.On this basis,summed up the optimization method of green patches and green corridors and refine born habitat diversity design pattern point green space and habitat patches layout principles,eventually push performance block unit the ideal mode of green space structure;Then the optimization of green space is carried out for specific cases and the simulation results are carried out through computer software to verify the feasibility and optimization effect of the ideal model of green space structure.The main research contents and conclusions are as follows:1.Block unit green space structure model research: first use Envi and Yikang and other software to interpret the remote sensing image map in Xi’an area,extract the block unit green space information,and finally summarize the 4 types of block types and 6types of green space structure model.2.Through the screening of many green space evaluation factors in the existing research results,the evaluation factors with higher correlation with this study were selected,and the evaluation model of green space habitat conditions was established by using AHP level analysis.Among the 13 evaluation indicators selected,the ranking of the important degree was habitat type,green space connectivity,topographical diversity,green space diversity,green space penetration,green space patch size,green space patch size,green space block size,green space area,green space patch area,plant community growth status.The coupling relationship between the structure pattern of block unit green space and the habitat condition of block unit is investigated by investigation and comparison.3.Based on landscape ecology and other related theories,5 green patch optimization methods,3 green corridor optimization methods,3 key points of habitat diversity design model and habitat patch layout principles are extracted.At the same time,6 ideal models of green space structure of block units are proposed,and specific block units are selected for green space optimization.Finally,the software was used to simulate the microclimate of the optimized scheme and verify the feasibility and optimization effect of the ideal mode of green space structure.The final results show that the 6 ideal patterns of green space structure extracted in this study are highly feasible and have certain optimization effects in terms of cooling and humidifying.