摘要
In the context of dual-cycle development,improving the supply and demand capacity of ecosystem services is foundational to promoting high-quality economic development.Based on accounting for the supply and demand of ecosystem services in the Yangtze River Delta(YRD)from 2000 to 2020,we analyze the characteristics of their temporal and spatial evolution and classify the ecological types of 41 cities in the YRD in 2020.The findingsare as follows:(1)During the 20 years,the supply value of ecosystem services in the YRD has decreased,but the overall value is high.Moreover,the spatial distribution of ecosystem services shows a notable distribution pattern of“high in the south and low in the north”.Furthermore,the demand for ecological value has increased significantly,and the demand of the northeastern plains region is much higher than that of the southwestern mountainous region.(2)The spatial heterogeneity of ecosystem service supply-demand balance in the YRD region is pronounced,with a notable distribution pattern,mainly dominated by cities with balanced supply-demand that forms a high-value area centered on Shanghai-Suzhou and a low-value area dominated by Chizhou-Huangshan and Huabei-Bozhou,which have strong ecological and economic synergies.(3)By 2020,there were 2 ecological conservation cities,3 ecological restoration cities,29 ecological remodeling cities,and 7 ecological development cities in the YRD,indicating overall coordinated ecological and economic development.
双循环发展背景下,提升生态系统服务供需能力是促进经济高质量发展的重要基础。本文在核算长三角2000—2020年生态系统服务供给、需求以及二者均衡度的基础上,对其时空演化特征和规律进行分析,并对2020年长三角41个城市进行生态类型划分。研究发现:(1)20年间,长三角地区生态系统服务供给价值有所下降,但总体价值较高,生态系统服务空间上呈现明显的“南高北低”分布特征,生态价值需求显著增加,东北平原地区需求远高于西南山区。(2)长三角地区生态系统服务供需平衡的空间异质性较大,分布格局显著,主要以供需平衡的城市为主,形成了以上海-苏州为中心的高价值区和以池州-黄山、淮北-亳州为主的低价值区,表现出较好的生态经济协同性。(3)到2020年,长三角共有生态保育型城市2个、生态修复型城市3个、生态重塑型城市29个、生态开发型城市7个,基本达到生态与经济的协调发展。
作者
LU Chenhao
CAO Yuhong
陆辰昊;曹玉红(安徽师范大学生态与环境学院,安徽芜湖241002;安徽师范大学皖江流域退化生态系统的恢复与重建省部共建协同创新中心,安徽芜湖241002)
基金
The National Natural Science Foundation of China(42371185)。
