基于MSPA和MCR模型的贺兰山生态安全网络评价与优化

叶洁楠, 黄亦周, 贾舒皓, 李坤, 张辰帅, 吴露涵, 李雨珊, 王浩

南京林业大学学报(自然科学版) ›› 2025, Vol. 49 ›› Issue (5) : 217-226.

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PDF(8555 KB)
南京林业大学学报(自然科学版) ›› 2025, Vol. 49 ›› Issue (5) : 217-226. DOI: 10.12302/j.issn.1000-2006.202406001
研究论文

基于MSPA和MCR模型的贺兰山生态安全网络评价与优化

作者信息 +

Evaluation and optimization of the ecological security network of Helan Mountain based on MSPA and MCR models

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文章历史 +

摘要

【目的】自然保护区正面临着生态环境保护与经济开发协调统一的问题。通过构建生态网络以保持生态源地间的完整性、连通性、稳定性和生物多样性,进而促进物种恢复和栖息地修复,为自然保护区景观格局的保护与优化提供科学依据。【方法】以贺兰山为研究区域,通过形态学空间格局分析(MSPA)法解析并选取高生态价值的林地作为核心区;运用景观连通性评价方法对核心区生态源地的连通性进行排序并最终确定连通性最高的重要生态源地;提取与研究区相关的6个阻力因子,通过最小累积阻力(MCR)模型和重力模型模拟生态廊道;结合水文分析识别生态节点,构建研究区生态安全网络。【结果】贺兰山共有重要生态源地15个,总面积为44 766 hm2,集中在中部和南部地区;在区域内确立了一般生态廊道31条、重要生态廊道16条,能够有效地连接所有生态源地并确保物种交流;确定了91个生态节点,其中43个暂歇点、35个战略点及13个断裂点。研究区内大部分生态安全网络呈现较高的连通性与完整性。【结论】贺兰山的生态安全格局可分为核心保护区、生态缓冲区和可持续利用区,对不同区域采取差异化管理策略,可为自然保护区的生态功能优化和空间协调规划提供参考,推动其生物多样性保护和生态系统的可持续发展。

Abstract

【Objective】Nature reserves face conflicts between ecological conservation and economic development. By establishing ecological networks to maintain the integrity, connectivity, stability, and biodiversity of ecological sources, species recovery and habitat restoration can be ensured. This approach provides a scientific foundation for the protection and development of the Helan Mountains.【Method】Taking the Helan Mountain as the study area, we identified ecologically valuable forest lands as core areas using the morphological spatial pattern analysis (MSPA). Ranked core areas by connectivity significance through landscape connectivity assessment.Extracted six resistance factors and simulated ecological corridors via the minimum cumulative resistance (MCR) and the gravity models. Identified ecological nodes through hydrological analysis to construct the ecological security network.【Result】The Helan Mountains comprises 15 significant ecological sources covering with a total area of 44 766 hm2, which are concentrated in the central and southern regions. Thirty-one general ecological corridors and 16 critical ecological corridors were identified within the area, effectively connecting all ecological sources and ensuring species exchange. Ninety-one ecological nodes were identified, including 43 temporary rest points, 35 strategic points, and 13 breakpoints; most of the ecological security networks within the study area shows high connectivity and integrity.【Conclusion】The ecological security pattern of the Helan Mountains can be zoned into core protection areas, ecological buffer zones, and sustainable use areas. Differentiated management strategies for different areas can provide references for optimizing the ecological functions of the nature reserve and spatial coordination planning, promotes the protection of biodiversity and sustainable development of ecosystems in the nature reserve.

关键词

自然保护区 / 形态学空间格局分析法(MSPA) / 最小累积阻力模型(MCR) / 生态源地 / 生态廊道 / 生态安全网络 / 贺兰山

Key words

nature reserve / morphological spatial pattern analysis (MSPA) / minimum cumulative resistance (MCR) model / ecological source areas / ecological corridors / ecological security network / Helan Mountain

引用本文

导出引用
叶洁楠, 黄亦周, 贾舒皓, . 基于MSPA和MCR模型的贺兰山生态安全网络评价与优化[J]. 南京林业大学学报(自然科学版). 2025, 49(5): 217-226 https://doi.org/10.12302/j.issn.1000-2006.202406001
YE Jienan, HUANG Yizhou, JIA Shuhao, et al. Evaluation and optimization of the ecological security network of Helan Mountain based on MSPA and MCR models[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2025, 49(5): 217-226 https://doi.org/10.12302/j.issn.1000-2006.202406001
中图分类号: S759.92   

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基金

国家自然科学基金面上项目(32371939)
江苏省社会科学基金后期资助项目(22HQB9)
2023年江苏高校“青蓝工程”优秀青年骨干教师项目

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