基于物种分布模型的重庆市自然保护地效果研究
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国家级大学生创新训练项目“基于物种分布模型的自然保护地体系代表性研究与空缺分析——以重庆市为例”(编号:202310611057)


Analysis on the Effectiveness of Chongqing’s Natural Protected Area System Based on Species Distribution Model
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    摘要:

    自然保护地体系建设是保护生物多样性最为有效的措施之一,物种多样性是对生物多样性的直观认识,也是衡量区域生物资源丰富程度的重要标准。为实现对重庆市自然保护地体系保护效果评估和空间布局优化,首先在ArcGIS平台建立重庆市自然保护地空间数据;其次收集重庆市范围内植物物种的分布数据,使用MaxEnt工具建立各指示物种分布的最大熵模型;再使用物种丰富度评价工具,将各物种分布模型叠加得到物种丰富度指数;最后与重庆市现有自然保护地体系进行比对,评价其保护的有效性并找出空缺和不足,提出对自然保护地规划的建议。结果表明,重庆市自然保护地体系仅保护了9.12%物种丰富度大的区域,保护空缺集中在渝东北大巴山和巫山、渝东南武陵山等山区。建议扩大上述区域现有的保护区范围、增设自然保护地,同时加强跨行政区自然保护地协调管理。

    Abstract:

    Constructing a natural reserve system is one of the most effective measures to protect biological diversity. Species diversity is an intuitive understanding of biological diversity and an essential criterion for measuring the richness of regional biological resources. To evaluate the protection effect and optimize the spatial layout of Chongqing’s natural protected area system, this paper first established the spatial data of Chongqing’s natural protected areas on the ArcGIS platform. Secondly, the distribution data of plant species within Chongqing City were collected, and the MaxEnt tool was used to establish the maximum entropy model of the distribution of each indicator species. Then, the species richness evaluation tool will superimpose each species distribution model to obtain the species richness index. Finally, it was compared with the existing natural protected area system in Chongqing to evaluate the effectiveness of its protection, identify gaps and deficiencies, and put forward suggestions for natural protected area planning. The study found that Chongqing’s nature reserve system only protects 9.12% of the areas with high species richness, and the protection gaps are concentrated in mountainous areas such as Daba Mountain and Wushan in northeastern Chongqing and Wuling Mountain in southeastern Chongqing. It is recommended that the scope of existing protected areas in the areas mentioned above be expanded, natural protected areas are added, and the coordinated management of cross-administrative natural protected areas be strengthened.

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  • 在线发布日期: 2024-11-12
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