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

YE Jienan, HUANG Yizhou, JIA Shuhao, LI Kun, ZHANG Chenshuai, WU Luhan, LI Yushan, WANG Hao

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2025, Vol. 49 ›› Issue (5) : 217-226.

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南京林业大学学报（自然科学版）
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JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2025, Vol. 49 ›› Issue (5) : 217-226. DOI: 10.12302/j.issn.1000-2006.202406001

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

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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.

Key words

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

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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

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