青藏高原国家公园群候选区人为扰动变化及社区尺度分类管控

Human disturbance dynamics and community-scale classification management in candidate areas of the Qinghai-Tibet Plateau National Park Cluster

  • 摘要: 青藏高原国家公园群候选区作为优化自然保护地格局和协调人地关系的重要手段, 旨在促进生态系统保护和区域可持续发展, 但其内部的人类扰动风险变化尚未受到充分关注。基于人类足迹指数, 结合载畜量修正, 构建了人为扰动指数时间序列, 使用Sen斜率估计和Mann-Kendall趋势检验, 分析了青藏高原区域及其国家公园群候选区在2000—2020年间人为扰动指数变化特征。在对扰动风险分布进行空间聚类分组基础上, 提出了社区层面协调保护需求和社区发展的管理策略。结果显示, 青藏高原人为扰动指数(HDI)呈现“N”字形波动, 2008年和2020年为峰值, 高值区集中在东北部、中部和南部, 向西北和东南递减, HDI显著增加区域占高原总面积的12.82%。三江源、若尔盖、祁连山、羌塘等4处西宁-拉萨连接线以东区域国家公园内HDI增加区域面积占比超过1/3, 冈仁波齐、珠穆朗玛等西部国家公园HDI呈现显著下降的区域超过30%。基于社区尺度的人为扰动变化空间聚集特征, 对国家公园涉及社区提出了分类管控措施。

     

    Abstract: The candidate areas of the Qinghai-Tibet Plateau National Park Cluster (NPC) are key means for optimizing the pattern of protected areas and balancing human-environment relations, which are significant for promoting ecosystem conservation and regional sustainable development. However, the dynamics of human disturbance risk within these areas have not been thoroughly studied. This research constructs a time series of the human disturbance index (HDI) by integrating the human footprint index with the adjustment of livestock carrying capacity, and analyzes the characteristics of human disturbance changes across the overall Qinghai-Tibet Plateau region and the candidate areas of national park cluster from 2000 to 2020 by using the Sen′s slope estimation and the Mann-Kendall trend test. Based on spatial clustering analysis of disturbance risk distribution, community-scale classification management strategies are proposed to coordinate ecological protection and community development needs. The results indicate that the HDI on the Qinghai-Tibet Plateau exhibits a bimodal non-linear trend, with peaks in 2008 and 2020. High-disturbance areas are mainly located in the northeast, central, and southern regions, with a decreasing spatial pattern to the northwest and southeast. Regions with significant increases in HDI account for 12.82% of the total area of the plateau. Notably, in the candidate areas for national parks such as Sanjiangyuan, Ruoergai, Qilian Mountain, and Qiangtang, which are located east of the Xining-Lhasa line, of which the increased HDI area exceeds one-third. Conversely, in western candidate areas like Gongga Mountain and Mount Everest, regions with significant decreases in HDI exceed 30%. Based on the spatial clustering characteristics of human disturbance at the community scale, this study proposes differentiated classification management measures for communities involved in national parks.

     

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