基于地理国情监测的区域生态系统服务评价——以杭州市为例

以地理国情监测为技术支撑,基于InVEST模型的中的Carbon模块、Water Yield模块,以杭州市为研究区,综合考虑生态系统服务供应强度、城乡差异因素,结合服务“热点”、服务“范围”概念,从全局、城镇—郊区—乡村、格网3个尺度对生态系统服务的空间分布特征进行分析。结果表明,碳储量服务的“热点”和“范围”面积占比在城镇、郊区、乡村三级里2010年较2000年均有所减少,但就总量来说,城镇和郊区的2010年与2000年相比有增加趋势。水资源供给服务的总量和“范围”面积占比在城镇、郊区、乡村三级里均呈减少趋势。

Evaluation of Regional Ecosystem Services Based on Geographic Conditions Monitoring——A Case Study of Hangzhou City

Based on the Carbon module and Water Yield module of InVEST model,this paper analyzed the spatial distribution characteristics of ecosystem services in Hangzhou City from three scales of overall situation,urban-suburban-rural levels and grid with the technical support of the geographical condition monitoring,considering the intensity of ecosystem services supply and urban-rural differences,combined with the concept of service“hot spot”and service“range”.The results showed that the proportion of“hot spot”and“range”areas of carbon storage services in urban-suburban-rural levels decreased in 2010 compared with 2000,but in terms of total amount,the proportion of urban and suburban areas increased in 2010.The total amount of water resources supply services and the proportion of“range”area showed a decreasing trend in urban-suburban-rural levels.