城市绿地生态系统服务功能及其价值评估——以深圳市福田区为例

Ecosystem service function and its value assessment for urban green space——a case study on Futian District of Shenzhen City

根据WorldView-3遥感影像数据,对深圳市福田区城市绿地的空间分布特征进行了分析,在此基础上构建指标体系对其生态服务价值进行评价.结果表明:福田区城市绿地的生态服务价值为11 683.41万元,单位面积城市绿地的生态服务价值为8.35万元;各项生态服务价值排序为:固碳释氧>涵养水源>调节气候>环境净化>维持生物多样性>土壤保持>景观游憩;从单位面积生态服务价值来看,乔木最大,草地最低,具体表现为乔木>乔灌>乔草>乔灌草>灌木>灌草>草地;从各街道分布情况来看,莲花街道>沙头街道>香蜜湖街道>梅林街道>福田街道>福保街道>园岭街道>华强北街道>华富街道>南园街道,其价值量大小主要取决于各街道所拥有的城市绿地面积.作为深圳市的中心城区,福田区在今后的城市绿地建设规划与管理过程中,要适当考虑不同类型城市绿地的空间异质性,优化城市绿地结构,维持绿地系统的生态平衡,充分发挥绿地系统的生态服务与功能.

Based on the interpretation results of Worldview-3 data,the spatial distribution characteristics of city green space is analyzed in Futian District,and its ecological service value is assessed,referring to the Forest Ecosystem Service Function Evaluation Specification.The results showed that：1）the ecosystem service value of urban green space reached up to 116.834 1 million Yuan in Futian District,and the average value per unit area was 83,500 Yuan.2）Various kinds ecological service values were sorted as follows：carbon fixation and oxygen release〉water resources conservation〉climate regulation〉environment purification〉biodiversity maintenance〉soil conservation〉landscape recreation.3）The average value per unit area was various among different urban green space,namely,arbor〉arbor-shrub〉arbor-grass〉arbor-shrub-grass〉shrub〉shrub-grass〉grass.4）The value of urban green space in different sub-district depended on the respective area of urban green space,namely,Lianhua〉Shatou〉Xiangmihu〉Meilin〉Futian〉Fubao〉Yuanling〉Huaqiangbei〉Huafu〉Nanyuan.As the central urban area in Shenzhen,it is important for Futian District to increase spatial heterogeneity,diversify species composition,optimize plant structure,and provide sound urban green space management,which is able to maintain the ecological balance and improve the ecological services of urban green space.