环鄱阳湖城市群生态安全格局构建与优化  

Construction and Optimization of Ecological Security Pattern in Poyang Lake Urban Agglomeration

作　　者：陈竹安[1,2] 谭浦旭 郑希平 陈雅斯 CHEN Zhu'an;TAN Puxu;ZHENG Xiping;CHEN Yasi(School of Surveying and Geoinformation Engineering,East China University of Technology,Nanchang 330013,China;Jiangxi Key Laboratory of Watershed Ecological Process and Information,East China University of Technology,Nanchang330013,China;Key Laboratory of Mine Environmental Monitoring and Improving around Poyang Lake of Ministry of Natural Resources,East ChinaUniversity of Technology,Nanchang 330013,China;Nanchang Key Laboratory of Landscape Process and Territorial Spatial Ecological Restoration,East China University of Technology,Nanchang 330013,China)

机构地区：[1]东华理工大学测绘与空间信息工程学院,南昌330013 [2]东华理工大学江西省流域生态过程与信息重点实验室,南昌330013 [3]东华理工大学自然资源部环鄱阳湖区域矿山环境监测与治理重点实验室,南昌330013 [4]东华理工大学南昌市景观过程与国土空间生态修复重点实验室,南昌330013

出　　处：《农业机械学报》2025年第1期397-409,共13页Transactions of the Chinese Society for Agricultural Machinery

基　　金：国家自然科学基金项目(52168010);教育部人文社会科学研究项目(22YJCZH150);江西省社会科学基金“十四五”地区项目(22DQ44)。

摘　　要：以环鄱阳湖城市群为例,将生态系统服务、电路理论模型及复杂网络模型相结合,建立基于“生态安全格局-拓扑特征-生态保护斑块”的生态安全格局研究框架。首先利用InVEST模型计算2000—2020年的生态系统服务分布并识别生态源地,而后基于电路理论模型构建生态安全格局,最后利用复杂网络模型分析网络结构拓扑特征,并对2020年生态网络进行增边优化并识别生态保护斑块。研究表明:研究区三期总体生态安全格局表现出北高南低的分布格局,且生态安全水平随时间推移逐步下降。2000—2020年,生态网络节点的重要性与聚集程度均有所下降,生态节点间相互联系被削弱,生态网络整体质量下降。采用度低者优先的策略对2020年生态网络进行模拟增边优化,提高了网络的鲁棒性,使得网络的结构稳定性和分布均衡性均有改善,缓解了研究区生态质量南北不平衡的现象。结果表明从多角度综合性视角出发,充分利用现有的生态斑块资源配合生态廊道的优化措施可以有效提高生态安全格局的稳定性。Taking the Poyang Lake urban agglomeration as an example,combined ecosystem services,circuit theory models,and complex network models to establish a research framework for ecological security patterns based on the“ecological security pattern-topological features-ecological protection patches”approach.Firstly,the InVEST model was used to calculate the ecosystem service values from 2000 to 2020 and to identify ecological source areas.Then,based on the circuit theory model,an ecological security pattern was constructed.Finally,the complex network model was employed to analyze the topological features of the network structure.The ecological network for 2020 was optimized by edge addition,and ecological protection patches were identified.The results showed that the overall ecological security pattern of the study area in the three phases showed a high north,low south distribution,with the ecological security level gradually declining over time.From 2000 to 2020,both the importance and clustering degree of the ecological network nodes were decreased,weakening the interconnections between ecological nodes and resulting in a decline in the overall quality of the ecological network.By applying a“low-degree-first”strategy for edge addition optimization to the 2020 ecological network,the network's robustness was improved.This optimization enhanced both the structural stability and distribution balance of the network,alleviating the north-south imbalance in ecological quality within the study area.The results indicated that from a comprehensive,multi-angle perspective,effectively utilizing existing ecological patch resources in conjunction with optimization measures for ecological corridors can significantly improve the stability of the ecological security pattern.Additionally,the ecological importance of the Poyang Lake area was prominent,playing a crucial role in enhancing ecological connectivity between the northern and southern regions of the study area.It was identified as a key region for future ecological prot

关 键 词：环鄱阳湖城市群 生态安全格局 生态保护斑块 电路理论模型 复杂网络模型 

分 类 号：X821[环境科学与工程—环境工程]