摘要:城市绿地能够为居民提供诸多类型的生态系统服务，而其格局的不均衡导致人类在享受其所带来效益的过程中产生差异化。根据西安市生态环境问题的具体现状，并综合研究区的基础地理条件，实现了西安市主城区绿地系统生物多样性、净化空气、固碳、气候调节四种生态系统服务的测算与空间化制图，并从公平性角度对整个研究区绿地的生态系统服务进行了评价分析，进一步采用具有动态约束的聚类和分区的方法得到生态系统服务的分区群，提出了区域化管理的构想。研究表明：①研究区绿地生物多样性整体偏低；绿地对PM_2.5的吸附作用呈现由北向南递减的趋势；固碳量整体上南部高于北部，东部高于西部；绿地区域的地表平均温度低于整体均值；②研究区城市绿地资源分布配置不均，不同区域的生态系统服务分布不合理；③在综合生态系统服务区域化的基础上引入生态系统服务簇，913个网格、12个分区、5个聚群为不同级别的生态系统服务管理提供参考。从而转变思路从生态系统服务水平指标对整体绿地格局进行规划指导，最大化实现绿地的生态功能，提升人民福祉。



Abstract:Urban green space can provide many types of ecosystem services for residents, and the imbalance of its pattern leads to the differentiation of human beings in the process of enjoying its benefits. According to the current situation of ecological environment problems in Xi'an and its basic geographical conditions, the calculation and spatial mapping of four kinds of ecosystem services, including biodiversity, carbon sequestration, air purification, and climate regulation, were realized. The ecosystem services of the whole study area were evaluated and analyzed from the perspective of fairness. Furthermore, the method of regionalization with dynamically constrained agglomerative clustering and partitioning (REDCAP) are used to get the partition group of ecosystem services, and the idea of regional management is proposed. The results indicated that:① the complexity of urban green space community in the study area is low, and the level of biodiversity needs to be improved; the dry deposition flux of PM_2.5 decreases from north to south, and plants have a certain adsorption effect on PM_2.5; the carbon sequestration in the south is higher than that in the north, and that in the east is higher than that in the west; the average surface temperature in the green space area is lower than that in the whole, and there is a strong correlation between normalized difference vegetation index (NDVI) and surface temperature in the study area; ② The distribution of urban green space resources in the study area is uneven, and the distribution of ecosystem services in different regions is unreasonable; ③ Based on the regionalization of integrated ecosystem services, ecosystem services cluster is introduced, including 913 grids, 12 partitions and 5 clusters, which can provide reference for different levels of ecosystem services management. In this way, urban managers can change their thinking, guide the overall green space pattern from the indicators of ecosystem service level, maximize the ecological function of green space, help the sustainable development of the city and improve people's well-being.





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