马雨欣, 杨琅, 李泞吕, 熊在秋, 吴学灿, 段禾祥, 张惠芳, 张志明. 基于生态系统服务重要性和生态系统脆弱性的临沧市生态安全格局构建[J]. 云南大学学报(自然科学版), 2022, 44(5): 1090-1100. doi: 10.7540/j.ynu.20210602
引用本文: 马雨欣, 杨琅, 李泞吕, 熊在秋, 吴学灿, 段禾祥, 张惠芳, 张志明. 基于生态系统服务重要性和生态系统脆弱性的临沧市生态安全格局构建[J]. 云南大学学报(自然科学版), 2022, 44(5): 1090-1100. doi: 10.7540/j.ynu.20210602
MA Yu-xin, YANG Lang, LI Ning-lv, XIONG Zai-qiu, WU Xue-can, DUAN He-xiang, ZHANG Hui-fang, ZHANG Zhi-ming. Construction of ecological security pattern in Lincang City based on the importance of ecosystem services and ecosystem vulnerability[J]. Journal of Yunnan University: Natural Sciences Edition, 2022, 44(5): 1090-1100. DOI: 10.7540/j.ynu.20210602
Citation: MA Yu-xin, YANG Lang, LI Ning-lv, XIONG Zai-qiu, WU Xue-can, DUAN He-xiang, ZHANG Hui-fang, ZHANG Zhi-ming. Construction of ecological security pattern in Lincang City based on the importance of ecosystem services and ecosystem vulnerability[J]. Journal of Yunnan University: Natural Sciences Edition, 2022, 44(5): 1090-1100. DOI: 10.7540/j.ynu.20210602

基于生态系统服务重要性和生态系统脆弱性的临沧市生态安全格局构建

Construction of ecological security pattern in Lincang City based on the importance of ecosystem services and ecosystem vulnerability

  • 摘要: 科学构建城市快速扩张背景下的区域生态安全格局是缓解生态保护与土地开发矛盾的有效途径之一. 云南省临沧市作为西南边境城市,其独特的地形地貌与丰富的生物多样性使得该区域在云南省“三屏两带”的生态安全基本格局中占据十分重要的地位. 以临沧市为例,运用InVEST模型评估区域生态系统服务,通过地形、植被覆盖度等非生物因素对其脆弱性进行描述,耦合生态系统服务和脆弱性识别具有较高生态保护重要性的区域作为生态源地,最后运用最小累积阻力模型识别生态廊道,以此构建该区域的生态安全格局并提出生态安全保护策略. 结果表明:临沧市生态源地总面积8804.25 km2,占该市土地总面积的37.27%,主要分布于凤庆县澜沧江流域、镇康县西部、耿马县、沧源县及永德县大雪山片区;生态廊道总长度为2151.96 km,根据该结果提出“一屏一带一轴多核心”的生态安全格局优化模式,为临沧市新一轮国土空间规划的 “山水林田湖草”要素配置及生态环境建设提供科学指导.

     

    Abstract: The scientific construction of regional ecological security pattern in the context of rapid urban expansion is one of the effective ways to alleviate the contradiction between ecological protection and land development. As a border city in Southwest China, Lincang City, Yunnan Province, with its unique topography and rich biodiversity, occupies an important position in the basic ecological security pattern of "three screens and two belts" in Yunnan Province. Taking the city of Lincang as an example, we use the InVEST model to assess the ecosystem services and describe the vulnerability of the area through abiotic factors such as topography and vegetation cover, and combine the results of the two parts to identify areas of high ecological conservation importance as ecological source areas, and then use the Minimum Cumulative Resistance model to identify ecological corridors, so as to construct the ecological security pattern of the area and propose ecological security protection strategies. The results show that the total area of ecological source area in Lincang is 8804.25 km2, accounting for 37.27% of the city's total area, mainly distributed in the Lancang River Basin of Fengqing County, the west of Zhenkang County, Gengma County, Cangyuan County and the Daxueshan area of Yongde County; the total length of ecological corridors is 2151.96 km. Based on the results, we propose the "one screen, one belt, one axis and multiple cores" ecological security pattern optimization, which provides scientific guidance for the configuration of "mountains-rivers-forests-farmlands-lakes-grasslands" elements and ecological environment construction in the new round of national land space planning in Lincang.

     

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