城市空间生态资产评估及其人地关系内涵——以武汉市府河湿地为例

The evaluation of urban spatial ecosystem assets and human-land relationship:A case study of Fuhe wetland in Wuhan city

估计生态系统的城市空间资产研究,对量化核定生态资产、调控城市人地关系具有重要意义。本文以武汉府河湿地为例,通过构建城市空间生态资产评估框架,分析生态资产变化及其人地关系内涵。结果显示:(1)2015—2021年,府河湿地丰富了城市空间资产的生态价值供给,在生态工程的作用下存量资产质量提升、流量资产总量较高、上下游资产供给相对不均衡;(2)居民对府河湿地的生态游憩需求提升,表现为数量增长与空间拓展,并存在距离衰减和闲暇时间约束的特征;(3)府河湿地内部系统呈现供需不均衡格局,远距离形成生态—人类活动相互作用发展趋势,拓展了人地系统耦合的空间尺度。这种远端相互作用与内部耦合的结合,构成新时期城市空间生态系统的人地耦合模式。研究结果为系统量化城市空间生态资产及其效应提供参考,为推进生态系统服务与人类福祉协调平衡提供科学依据。

The research on urban spatial assets considering ecosystem is of great significance for quantifying ecological assets and regulating urban human-land relationship.Taking Wuhan Fuhe wetland as an example,this study analyzed the change of ecosystem assets and human-land relationship by constructing the evaluation framework of urban spatial ecosystem assets.The results show that:(1)From 2015 to 2021,the Fuhe wetland enriched the supply of ecological wealth of urban spatial assets.Under the effect of ecological engineering,the quality of stock assets improved,the total amount of flow assets was high,and the supply of upstream and downstream assets was comparatively uneven.(2)The increased demand for ecological recreation among residents manifested as quantity growth and space expansion.Meanwhile,the demand space had the characteristics of distance decay and leisure time constraint.(3)Although the supply and demand in the internal system were out of balance,this system generated a long-term interaction between ecological and human activities,which expanded the spatial scale of the coupled human and environment system.The combination of remote interaction and internal coupling constituted the human-land coupling model of urban spatial ecosystem in the new era.The research results can provide some reference for the systematic quantification of urban spatial ecosystem assets,and a scientific basis for promoting the coordination and balance of ecosystem services and human welfare.