供需关系下长三角城市群 生态系统服务空间流转

基于价值量、热点分析、最小累计阻力(MCR)模型和距离衰减等多种方法和模型,量化分析长三角城市群2010年和2018 年的生态系统服务供给和需求,揭示其供需盈亏关系;根据整体供需空间格局,确定生态源地到生态需求地的生态系统服务空间流转路径与价值流转量.结果表明:长三角城市群2010年和2018年生态系统服务供给变化微小,而生态系统服务需求显著增长;生态系统服务供给呈南高北低的分布形态,生态系统服务需求呈东高西低的分布形态;供需盈余区主要分布于皖南山地丘陵,供需赤字区主要分布于经济发达城市的主城区;研究年份内,供需平衡区面积减少,供需失衡区面积增加,经济发展与土地利用变化导致供需空间异质性增强;将生态源地与生态需求地之间的重要生态廊道作为生态系统服务空间流转路径,2010年和2018年的生态系统服务价值流转总量分别为127.1,272.6亿元.

Spatial Transfer of Ecosystem Services in Yangtze River Delta Urban Agglomeration Under Relationship of Supply and Demand

Based on various methods and models such as value quantity, hot spot analysis, minimum cumulative resistance(MCR)model and distance attenuation, quantitatively analyzes the supply and demand of ecosystem services in the Yangtze River Delta urban agglomeration in 2010 and 2018, reveals the profit and loss relationship between supply and demand, and determines the spatial transfer paths and value transfer volume of ecosystem services from ecological origins to ecological destinations according to the overall spatial pattern ofsupply and demand. The results show that the supply of ecosystem services change slightly in the Yangtze River Delta urban agglomeration in 2010 and 2018, while the demand of ecosystem services increase significantly. The supply of ecosystem services presents a distribution pattern of high in the south and low in the north, and the demand of ecosystem services presents a distribution pattern of high in the east and low in the west. The surplus areas of supply and demand are mainly distributed in the mountains and hills of Southern Anhui, and the deficit areas of supply and demand are mainly distributed in the main urban areas of economically developed cities. During the study year, the areas of supply and demand balance area decrease, the areas of supply and demand imbalance area increase, and the spatial heterogeneity of supply and demand increase due to economic development and land useing change. Taking the important ecological corridors between ecological origins and ecological destinations as the spatial transfer paths of ecosystem services, the total value transfer volume of ecosystem services in 2010 and 2018 is 127.1,272.6 billion yuan respectively.