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| 耦合ERI-MCR-电路模型的喀斯特流域生态安全格局构建 |
| Construction of Ecological Security Pattern in A Karst Basin Coupled with ERI MCR Circuit Model |
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| DOI： |
| 中文关键词: 生态安全格局 ERI-MCR-电路模型 生态修复 喀斯特 红枫湖流域 |
| 英文关键词: Ecological security pattern ERI MCR circuit model Ecological restoration Karst Hongfeng Lake basin |
| 基金项目:国家自然科学基金资助项目（42262001）；贵州省科技计划研究基金资助项目（黔科合基础-ZK〔2022〕一般277，黔科合平台YWZ〔2024〕002）；贵州科学院青年基金资助项目（黔科院J字〔2024〕13号） |
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| 全文下载次数: 63 |
| 中文摘要: |
| 基于景观生态风险指数（ERI）提取生态源地，结合最小累积阻力（MCR）模型和电路模型辨识红枫湖流域生态廊道、生态夹点、障碍点及断裂点等区域，在此基础上，结合国土空间生态修复规划，构建红枫湖流域生态保护与修复格局。结果表明：流域北部景观生态风险整体高于南部，较低风险、低风险区主要分布于南部，较高风险区与高风险区主要集中在流域东北部。构建基于“点〖CD*2〗线〖CD*2〗面”结构的红枫湖流域生态安全格局，其中，“点”指划定28个生态源地，总面积34582km2，识别出27处生态夹点、18个生态障碍点和35个生态断裂点；“线”指构建35条生态廊道，总长度13292km；“面”指划分5个生态安全等级分区，包括高度生态安全区、较高生态安全区、中度生态安全区、较低生态安全区、低度生态安全区。 |
| 英文摘要: |
| The ecological sources were extracted based on landscape ecological risk index (ERI)， and the ecological corridors， pinch points， barriers and breakpoints in Hongfeng Lake basin were identified by integrating the minimum cumulative resistance (MCR) model and the circuit model. On this basis， an ecological protection and restoration pattern for Hongfeng Lake basin was proposed in combination with territorial space ecological restoration planning. The results showed that the overall landscape ecological risk in the northern part of the basin was higher than in the southern part， and the relatively low risk and low risk areas were mainly distributed in the south， while the relatively high risk and high risk areas were primarily concentrated in the northeastern part of the basin. In the ecological security pattern of Hongfeng Lake basin based on “point line area” structure， “points”—28 ecological sources were delineated， with a total area of 34582 km2， 27 ecological pinch points， 18 ecological barriers and 35 ecological breakpoints were identified. “lines”—35 ecological corridors were constructed， with a total length of 13292 km. “areas”—5 zones of ecological security level were classified， including high， relatively high， moderate， relatively low and low ecological security zones. |
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