基于电路理论的桂林漓江流域生态安全格局构建

doi:10.16088/j.issn.1001-6600.2024030502

摘要/Abstract

摘要： 城市化进程加速会引起区域生态安全格局变化,而生态安全格局又是实现区域经济发展与生态平衡的关键。本文以典型的喀斯特生态脆弱区——漓江流域为研究对象,基于电路理论构建点(节点、屏障点)—线(生态网络)—面(生态源)框架的漓江流域生态安全格局。通过生态服务价值估算和生态敏感性分析识别生态源,并利用电路理论生成生态网络,优化景观格局,促进漓江流域生态价值的提升和实现。研究结果表明:漓江流域生态源地共12个,总面积1 624.71 km²,占整个流域面积的31%。在构建的漓江流域生态网络模型中,生态廊道有15条,其中重要生态廊道7条,潜在生态廊道8条,重要生态廊道最长为64.35 km。漓江流域景观优化呈现出“一带两廊三区”格局,因地制宜发挥生态优化和修复职能,提高各源地之间的景观连通性,可为漓江流域生态安全格局构建和生态修复提供科学依据,同时为流域生态系统调控和桂林市国家可持续发展议程创新示范区高质量发展提供决策参考。

关键词: 生态安全格局, 电路理论, 生态廊道, 生态敏感性, 漓江流域

Abstract: The acceleration of urbanization processes will inevitably lead to alterations in regional ecological security patterns. These patterns are pivotal for achieving balanced regional economic development and ecological equilibrium. This study focuses on the Lijiang River Basin,a quintessential karst ecologically fragile region,and constructs its ecological security pattern using circuit theory within a framework of point (node,barrier point)-line (ecological network)-surface (ecological source). Ecological sources are pinpointed through ecological service value estimation and ecological sensitivity analysis. The ecological network is then established using circuit theory to optimize landscape patterns,thereby enhancing and actualizing ecological values within the Lijiang River Basin. The findings reveal that there are 12 ecological source sites in the Lijiang River Basin,covering an area of 1 624.71 km²,which constitutes 31% of the total basin area. Within the constructed ecological network model of the Lijiang River Basin,there exist 15 ecological corridors:seven significant and eight potentials,with the longest being 64.35 km. The landscape optimization in the Lijiang River Basin exhibits a “one belt two corridors three zones” pattern. This pattern can serve as an ecological optimization and restoration function tailored to local conditions,enhance landscape connectivity between each source site,provide a scientific foundation for constructing the ecological security pattern and ecological restoration in the Lijiang River Basin,and offer decision-making references for ecosystem regulation in the basin and high-quality development of Guilin City's National Sustainable Development Agenda Innovation Demonstration Zone.

Key words: ecological security pattern(ESP), circuit theory, ecological corridor, ecological sensitivity, Lijiang River Basin

中图分类号: X171.1

贾艳红, 吴春竹, 胡洪文, 黄俊忠, 苏筱茜. 基于电路理论的桂林漓江流域生态安全格局构建[J]. 广西师范大学学报（自然科学版）, 2024, 42(5): 201-212.

JIA Yanhong, WU Chunzhu, HU Hongwen, HUANG Junzhong , SU Xiaoqian. Construction of Ecological Security Pattern in Lijiang River Basin Based on Circuit Theory[J]. Journal of Guangxi Normal University(Natural Science Edition), 2024, 42(5): 201-212.

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