| 基于“生态潜力-恢复力-连通性”多层次构建伏牛山生态格局 |
| 摘要点击 227 全文点击 6 投稿时间：2025-03-10 修订日期：2025-05-20 |
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| 中文关键词 生态安全格局 InVEST模型 电路理论 生态系统服务 伏牛山 |
| 英文关键词 ecological security pattern InVEST model circuit theory ecosystem services Funiu Mountains |
| DOI 10.13227/j.hjkx.202503102 |
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| 中文摘要 |
| 构建生态安全格局是落实区域生态保护建设的重要举措. 以伏牛山区为研究区，基于“生态潜力-恢复力-连通性”理论框架，综合运用InVEST模型和电路理论，构建多层次生态安全格局. 结果表明：①基于固碳、产水和土壤保持等生态系统服务能力，综合考虑构建生态潜力指标，研究发现生态潜力因子在空间分布上存在显著差异性. 其中，生态潜力强的区域主要集中于中部地带，占研究区面积的54.32%. 基于净初级生产力（NPP）、有机质含量及人口密度构建的恢复力指标体系揭示了3种关键因子在空间分布上的显著差异性. 结果表明，研究区以中等水平的生态恢复力为主导，高连通性核心斑块主要集中于区域中心地带. ②共识别26个生态源地，总面积为4 925.64 km2，占伏牛山保护区面积的8.8%. 识别47条生态廊道，生态夹点116个，生态障碍点59个. 研究新增了7个生态踏脚石，并采用网络分析法对比发现，优化后的生态廊道共63条，较优化前增加16条. 整体而言，优化后的生态网络能量循环水平和节点连接度显著提升，且廊道空间分布更为均匀. 为了更好地保护位于生态阻力面高值区域的生态源地，分别以500 m和2 000 m为半径构建了7个生态源地“缓冲区”，以此探讨不同半径下生态缓冲区的宽度设置对生态网络保护效果的影响. ③生态保护情景下，在“源廊成网、生境连通”的生态网络基础上最终形成“一核两带六区多点”生态空间安全格局. 这一格局的形成旨在为未来伏牛山生态保护建设提供科学依据和实践参考，助力区域生态系统的可持续发展与生态安全的稳固提升. |
| 英文摘要 |
| Constructing an ecological security pattern is a crucial measure for implementing regional ecological protection and construction. Taking the Funiu Mountain area as the study area and based on the theoretical framework of “ecological potential-resilience-connectivity，” this study integrates the InVEST model and circuit theory to construct a multi-level ecological security pattern. The results show that： ① Based on ecosystem service capabilities such as carbon sequestration， water yield， and soil conservation， an ecological potential index was comprehensively constructed. The study found that there were significant spatial differences in the ecological potential factor. The areas with strong ecological potential were mainly concentrated in the central zone， accounting for 54.32% of the study area. The resilience index system constructed based on net primary productivity （NPP）， organic matter content， and population density revealed significant spatial differences in the three key factors. The study area was dominated by moderate ecological resilience， and the core patches with high connectivity were mainly concentrated in the central part of the region. ② A total of 26 ecological sources were identified， with a total area of 4 925.64 km2， accounting for 8.8% of the Funiu Mountain Nature Reserve. Forty-seven ecological corridors， 116 ecological pinch points， and 59 ecological barrier points were identified. The study added seven ecological steppingstones. A network analysis was used to compare and found that the optimized ecological corridors totaled 63， an increase of 16 compared to that before optimization. Overall， the energy circulation level of the optimized ecological network and the node connectivity were significantly improved， and the spatial distribution of the corridors was more even. To better protect the ecological sources located in high-value areas of the ecological resistance surface， seven ecological source “buffer zones” were constructed with radii of 500 meters and 2 000 meters， respectively， to explore the impact of different buffer zone widths on the ecological network protection effect. ③ Under the ecological protection scenario， based on the “source-corridor-networked， habitat-connected” ecological network， a final ecological space security pattern of “one core， two belts， six zones， and multiple points” was formed. |
