摘要
【目的】以鄱阳湖城市群为例,探讨城市群生态系统服务空间网络结构特征及其优化策略,以期为城市群生态环境保护、国土空间治理和高质量发展提供参考。【方法】运用InVEST模型测算研究区2000—2020年生态系统服务供给量,并分析其时空演变特征;然后利用空间自相关模型和修正的引力模型分别探讨综合生态系统服务的空间自相关特征与空间网络结构特征,并有针对性地提出优化策略。【结果】(1)2000—2020年产水和土壤保持分别提高了5.665%和19.423%,碳储存和生境质量分别降低了1.859%和4.509%,综合服务主要呈现“四周高,中间低,沿江沿河低”的空间格局;(2)生态系统服务呈现显著的空间近邻效应和空间溢出现象,区际联系趋向于下降,区际外溢效应出现弱化,热点与冷点的连绵态势明显,部分冷点区存在明显波动与扩张;(3)生态系统服务空间网络结构具有多重关联的复杂特征,整体上呈现“一大核,三小核”的空间分布格局,时间上呈现多重关联的复杂网络逐渐演变为简单独立网络的趋势;(4)优化策略中,建议培育并维持核心生态源地、合理优化“三生空间”格局、加快建立跨区域的生态保护补偿机制和统筹各系统之间的协调发展。【结论】鄱阳湖城市群生态系统服务的空间网络连通性渐趋于弱化,建议通过合理的手段推动城市之间的多联多通,有助于建立城市群的生态补偿机制。
[Objective]Taking Poyang lake urban agglomeration as an example,this study explores the characteristics of the spatial network structure of ecosystem services of urban agglomeration and their optimisation strategies,thus providing references for ecological environmental protection,territorial space governance and high-quality development of urban agglomeration.[Method]The InVEST model was used to measure the supply of ecosystem services in the study area from 2000 to 2020 and analyzed its spatial and temporal evolution,the spatial autocorrelation and modified gravity models were used to explore the spatial autocorrelation and spatial network structure of the integrated ecosystem services,and targeted optimization strategies were proposed.[Result](1)From 2000 to 2020,water yield and soil conservation increased by 5.665%and 16.240%,respectively,while carbon storage and habitat quality decreased by 1.842%and 4.509%,and the integrated services mainly showed a spatial pattern of‘high in the surroundings,low in the middle and along the river’;(2)Ecosystem services showed significant spatial proximity effects and spatial spillover phenomena,with inter-area linkages tending to decline,inter-area spillover effects appearing to weaken,the contiguity of hotspots and coldspots was obvious,and there was significant fluctuations and expansion in some of the coldspot areas;(3)The structure of the spatial network of ecosystem services had the complex characteristic of multiple interconnections,showing the spatial distribution pattern of‘one big core and three small cores’as a whole,and the tendency of the complex network of multiple interconnections gradually evolving into a simple and independent network in time;(4)In terms of the optimization strategy,it is recommended to cultivate and maintain core ecological source areas,reasonably optimize the“three living spaces”pattern,accelerate the establishment of cross regional ecological protection compensation mechanisms,and coordinate the coordinated development between various systems.[Conclusion]The network connectivity of ecosystem services in the Poyang Lake urban agglomeration is gradually weakening.Promoting the multi connectivity of cities through reasonable means can help establish an ecological compensation mechanism for the urban agglomeration.
作者
罗松开
王建辉
罗志军
郭东汕
童锦文
聂欣然
LUO Songkai;WANG Jianhui;LUO Zhijun;GUO Dongshan;TONG Jinwen;NIE Xinran(Field Scientific Observation and Research Station for Ecological Protection Red Line in Poyang Lake Basin,Ministry of Natural Resources,Nanchang 330025,China;College of Land Resources and Environment,Jiangxi Agricultural University,Nanchang 330045,China;Technology Innovation Center for Land Spatial Ecological Protection and Restoration in Great Lakes Basin,MNR,Nanchang 330029,China;Jiangxi Institute of Land Space Survey and Planning,Nanchang 330025,China)
出处
《江西农业大学学报》
北大核心
2025年第2期557-568,共12页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家自然科学基金项目(41961042)
自然资源部大湖流域国土空间生态保护修复工程技术创新中心开放课题基金(JXCXZX2024003)。
