市场化导向的江苏省生态系统服务流空间演化及生态补偿路径OACHSSCD

Against the backdrop of rapid urbanization and climate change exacerbating the imbalance and spatial mismatch of ecosystem service supply and demand,ecological compensation mechanisms have become a key policy tool for coordinating ecological protection and economic development.Therefore,taking Jiangsu Province as an example,this research utilized multi-source data from 2000 to 2020-including land use,nighttime light,and socio-economic statistics-to quantify the supply-demand ratio of regional ecosystem services at multiple scales.It innovatively introduced market transaction logic to construct a market-oriented model of ecosystem service flows.The study revealed the characteristics of ecosystem service flows between supply and demand areas at the county level,quantified the ecological compensation values involved,and proposed implementation pathways for a province-wide coordinated ecological compensation mechanism.The results revealed the spatiotemporal patterns of ecological compensation in Jiangsu Province from 2000 to 2020:(1)The supply-demand pattern exhibited characteristics of"geographical gradient differentiation and contiguous expansion of deficits,"with a continuously widening imbalance between supply-demand and the formation of cross-regional functional units identified as cold and hot spot clusters.(2)The ecosystem service flows demonstrated a pattern of"higher in the south and lower in the north,denser in the west and sparser in the east,"with flow intensity attenuating as distance increased.(3)The compensation amounts increased substantially,revealing a dual-polarized structure of"core payment areas and key recipient areas."The primary payment entities shifted from traditional urban districts to emerging economically developed regions.Based on the spatial heterogeneity of ecosystem service flows,the study further proposed the following measures:establishing negotiation-based horizontal compensation mechanisms;developing a multi-level trading system incorporating diverse compensation instruments;and building ecological product trading platforms with improved supporting systems.These measures aimed to construct an integrated ecological compensation mechanism that harmonizes ecological,"ecology,economy,and society,"thereby achieving a transition from"blood transfusion"to"hematopoietic"compensation.