太原市城市绿地生态系统服务供需平衡评价

Evaluation of Supply and Demand Balance of Urban Green Space Ecosystem Service in Taiyuan City

在对太原市城市绿地进行分类和面积核算的基础上,通过建立相互对应的城市绿地生态系统服务功能和需求评价体系,对太原市城市绿地生态系统服务的供需平衡状况进行综合评价。结果表明,2017年太原市城市绿地生态系统服务功能总价值为35.95亿元,城市绿地建设投入产出比约为1∶4。各功能评价指标中,调节小气候功能价值最大,滞尘功能价值可以忽略不计。各绿地类型中,公园绿地功能价值最低,区域绿地功能价值最高。太原市城市绿地生态系统服务功能和需求间还存在一定差距,提升太原市城市绿地生态系统服务功能需要在增加绿地面积的基础上,提升单位面积生态系统服务功能。太原市城市绿地生态系统服务功能和需求间还存在一定差距,提升太原市城市绿地生态系统服务功能需要在增加绿地面积的基础上,提升单位面积生态系统服务功能。

Based on the classification and area accounting of urban green space in Taiyuan City,the supply-demand balance of urban green space ecosystem services was comprehensively evaluated by establishing a corresponding service function and demand evaluation system.The results showed that the total value of urban green space ecosystem service function in Taiyuan in 2017 was 3.595 billion yuan/a,and the input-output ratio of urban green space construction was about 1∶4.Among all the functional evaluation indexes,the value of regulating microclimate function was the largest,and the value of dust retention function could be ignored.Among all types of green space,the function value of park green space was the lowest,and the function value of regional green space was the highest.There was still a certain gap between the service function and demand of urban green space ecosystem in Taiyuan City.It was necessary to improve the service function of ecosystem per unit area on the basis of increasing the green space area.