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

Abstract

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

CLC Number: X171.1

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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Construction of Ecological Security Pattern in Lijiang River Basin Based on Circuit Theory

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