六盘山区国土空间生态安全格局构建与分区优化
收稿日期: 2022-12-23
修回日期: 2023-03-24
网络出版日期: 2023-08-01
基金资助
宁夏自然科学基金项目(2022AAC03669)
Construction of an ecological security pattern and zoning optimization for territorial space in the Liupan Mountain Area
Received date: 2022-12-23
Revised date: 2023-03-24
Online published: 2023-08-01
生态安全格局构建是保障人类福祉和健康发展的重要途径,是践行山水林田湖草沙生命共同体理念的具体举措,选取具有重要生态地位和屏障作用的宁夏六盘山区,将InVEST模型生态服务评价优势和Circuitscape电路理论景观模型廊道识别优势充分结合,采用“源地—廊道—节点”的研究范式开展六盘山区生态安全格局构建和生态修复分区。结果表明:六盘山区共有生态源地75个,占研究区总面积的21.8%,呈现山系格局、县域拓展特征;关键生态廊道47处,总长度211.6 km,需要优先保护修复的夹点和障碍点分别为547处和217处,面积分别为626.9 km2和893.9 km2;生态屏障带面积占比17.4%,需要实施最严格的生态保护措施,保育区、修复提升区和控制调节区的面积占比分别为6.5%、38.2%和37.9%,需要加强生态监测和实施差异化修复措施,科学划定三区三线和全面协调发展保护关系。研究结果可为六盘山区国土空间生态保护修复、政策制定及工程布局提供参考。
包玉斌 , 王耀宗 , 路锋 , 刘自增 , 马大为 , 杨勇 , 吴娟 , 张永康 . 六盘山区国土空间生态安全格局构建与分区优化[J]. 干旱区研究, 2023 , 40(7) : 1172 -1183 . DOI: 10.13866/j.azr.2023.07.14
The establishment of an ecological security pattern is a crucial step in ensuring human well-being and healthy growth. It is a particular measure for putting the notion of “life community” into reality. The critical ecological location and abundant ecological resources of Ningxia’s Liupan Mountain Area make it indispensable in ensuring regional ecological security. In this study, we use the InVEST model and the circuit theory landscape model (Circuitscape) to completely integrate the benefits of ecosystem service assessment and ecological corridor identification. Meanwhile, we use the “sources-corridors-nodes” paradigm to build the ecological security pattern and complete ecological restoration zoning. According to the findings, there are 75 ecological sources in the Liupan Mountain Area, accounting for 21.8% of the total study area, which exhibits the characteristics of mountain spatial pattern and county expansion and serves as ecological strategic points and nodes in the construction of ecological security patterns. With a total length of 211.6 km, 47 significant ecological corridors link the nature reserves and the primary ecological sources. Meanwhile, 547 ecological pinchpoints and 217 ecological barriers, totaling 626.9 km2 and 893.9 km2, need urgent conservation and restoration. The area of ecological barriers accounts for 17.4% of the total, which requires the most stringent ecological protection to maximize the regional ecological radiation effect. Meanwhile, the proportions of conservation areas, restoration and improvement areas, and control and coordination areas are 6.5%, 38.2%, and 37.9%, respectively. To limit the danger of ecological deterioration, protected zones have strengthened surveillance of closed slopes and prohibited grazing, as well as plant regeneration. The restoration and improvement regions need the implementation of diverse strategies to enhance ecological quality to sustain the ecological network’s healthy, stable, and virtuous cycle and to capitalize on the ecological buffer zone impact. To thoroughly coordinate and maintain development, it is critical to scientifically outline the three zones and three lines, as well as enhance the degree of land conservation and intense usage. The findings might be useful for integrated and systematic ecological conservation and restoration, as well as policy development and project layout in the Liupan Mountain Area.
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