摘要
非线性关系研究是理解生态系统及其与人类活动之间复杂交互作用机理的重要基础。综合运用InVEST、自组织映射神经网络、地理加权回归和限制性立方样条回归模型,刻画珠三角地区生态系统服务簇空间格局,明确不同服务簇中权衡/协同网络结构和非线性阈值特征,并据此提出差异化生态管控建议。结果表明:1)珠三角地区生态系统服务簇分5种类型,由中部向四周呈圈层分布:都市生态型-生态匮乏型-农业生态型-生态降温型-生态保育型;2)不同服务簇的权衡/协同网络中,碳储存与城市降温维持较稳定的协同关联,其他服务之间则存在明显差异;3)不同服务簇的非线性阈值效应中,生态保育型和生态匮乏型最强,农业生态型和生态降温型次之,都市生态型最弱。建议基于关键阈值划定差异化的重点管控区,并结合各服务簇内部关联机理制定针对性的分区管控策略。
Against the background of ecological civilization construction,optimizing the control of territorial spatial zoning has become an important issue in maintaining regional ecological security.Clarifying different ecological processes and mechanisms within and among different ecological functional zones is of great practical significance for formulating refined spatial ecological management strategies.So far,research studies have focused on delineating ecological functional zones and analyzing linear processes and mechanisms within them,with little discussion on the differences in internal mechanisms and nonlinear characteristics of different ecological functional zones.Thus,it is necessary to elucidate key differences in the internal mechanisms and nonlinear threshold effects among different ecological functional zones to provide a scientific basis for establishing a territorial spatial zoning management system.In this study,the Integrated Valuation of Ecosystem Services and Trade-Offs model was used to evaluate ecosystem services in the Pearl River Delta region.Toward this,a self-organizing map was used to identify ecosystem service bundles,and geographically weighted regression and restrictive cubic spline analysis were used to clarify the key differences in trade-off/synergy networks and nonlinear thresholds among different ecosystem service bundles.Based on the results,suggestions for refined zoning and control of ecological spaces in the Pearl River Delta region are proposed.The results showed that:(1)In the Pearl River Delta,five different types of ecosystem service bundles are distributed in a circular pattern in space from the central to the surrounding areas:the urban-ecological,ecological-scarcity,agricultural-ecological,ecological-cooling,and ecological-conservation types.The ecological-conservation type accounted for 45.38%(the largest proportion),ecological-cooling for 32.80%,and ecological-scarcity for 10.73%of ecosystem service bundles;whereas neither the agricultural-ecological nor urban-ecological
作者
李婷
李志文
陈登帅
李辉霞
徐皓帆
Li Ting;Li Zhiwen;Chen Dengshuai;Li Huixia;Xu Haofan(School of Architecture and Planning,Foshan University,Foshan 528011,China;School of Geography and Environment,Liaocheng University,Liaocheng 252000,China)
出处
《热带地理》
CSCD
北大核心
2024年第12期2278-2291,共14页
Tropical Geography
基金
国家自然科学基金青年项目(42201098)
广东省哲学社会科学规划面上项目(GD23CSH05)。
关键词
生态系统服务簇
权衡/协同
生态功能分区
非线性关系
阈值效应
城市群
珠三角
ecosystem service bundle
trade-off/synergy
ecological functional zoning
nonlinear relationship
threshold effect
urban agglomeration
the Pearl River Delta
