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川西北长江黄河源区生态安全格局构建及优化

刘斯媛 罗勇 于慧 王晓 李梓涵 董维

刘斯媛,罗勇,于慧,等.川西北长江黄河源区生态安全格局构建及优化[J].环境工程技术学报,2023,13(4):1315-1324 doi: 10.12153/j.issn.1674-991X.20220792
引用本文: 刘斯媛,罗勇,于慧,等.川西北长江黄河源区生态安全格局构建及优化[J].环境工程技术学报,2023,13(4):1315-1324 doi: 10.12153/j.issn.1674-991X.20220792
LIU S Y,LUO Y,YU H,et al.Construction and optimization of ecological security pattern in the source regions of the Yangtze River and the Yellow River in northwestern Sichuan[J].Journal of Environmental Engineering Technology,2023,13(4):1315-1324 doi: 10.12153/j.issn.1674-991X.20220792
Citation: LIU S Y,LUO Y,YU H,et al.Construction and optimization of ecological security pattern in the source regions of the Yangtze River and the Yellow River in northwestern Sichuan[J].Journal of Environmental Engineering Technology,2023,13(4):1315-1324 doi: 10.12153/j.issn.1674-991X.20220792

川西北长江黄河源区生态安全格局构建及优化

doi: 10.12153/j.issn.1674-991X.20220792
基金项目: 四川省科技计划重点研发项目(2022YFS0494, 2019YFS0467);国家自然科学基金项目(41971273)
详细信息
    作者简介:

    刘斯媛(1998— ),女,硕士研究生,研究方向为资源环境承载力及国土空间适宜性评价、生态修复,657027113@qq.com

    通讯作者:

    罗勇(1981—),男,副教授,研究方向为资源环境承载力与生态系统服务功能优化调控、生态修复,23761574@qq.com

  • 中图分类号: F205

Construction and optimization of ecological security pattern in the source regions of the Yangtze River and the Yellow River in northwestern Sichuan

  • 摘要:

    以生物多样性保护为出发点,聚焦生态环境脆弱、地灾频发的川西北地区,实现阿坝藏族羌族自治州(简称阿坝州)生态安全网络构建及优化。选取高程、坡度、土地覆被、植被覆盖度、地质灾害易发性、距水系距离、距建设用地距离为阻力面因子,加权叠加构建综合阻力面,基于电路理论、利用Linkage Mapper工具,构建阿坝州生态廊道,识别生态节点,进而优化阿坝州生态安全格局。结果表明:识别18处生态源地,面积为28553.83 km2,呈现南部和北部集中分布、东西部零星式分布格局;构建生态廊道39条,识别生态节点61个,其中夹点35个,障碍点26个,呈现中西部区域廊道长、东部廊道短的空间格局;规划核心生态源地8处、中枢生态源地4处、一般生态源地6处,一级生态廊道9条、二级生态廊道22条、三级生态廊道8条,一级生态节点17个、二级生态节点44个,实现生态源地和生态廊道科学分级;提出“两区、两带、三廊”的格局优化体系, 发展高质量旅游业、改善物种迁徙通道、连通河流廊道等措施可有效维护川西北黄河源区的生态安全格局。

     

  • 图  1  研究区行政区划及高程

    Figure  1.  Administrative division and elevation of the study area

    图  2  阻力面因子评价

    Figure  2.  Evaluation diagram of resistance surface factors

    图  3  综合累计阻力值评价

    Figure  3.  Evaluation of comprehensive cumulative resistance value

    图  4  生态廊道评价

    Figure  4.  Evaluation of ecological corridors

    图  5  生态夹点评价

    Figure  5.  Evaluation of ecological corridors and ecological pinch points

    图  6  障碍点评价

    Figure  6.  Evaluation of obstacle points

    图  7  生态廊道和生态节点分级

    Figure  7.  Grading of ecological corridors and ecological nodes

    图  8  生态节点结果验证

    Figure  8.  Validation of ecological nodes result

    图  9  研究区生态格局

    Figure  9.  Ecological pattern of the study area

    表  1  生态源地扩张阻力因子赋值及权重

    Table  1.   Assignment and weighting of ecological source expansion resistance factors

    阻力因子阻力分级阻力值权重
    高程/m≤1500100.126 0
    (1500,2500]30
    (2500,3800]50
    (3800,4600]70
    >460090
    坡度/(°)≤7100.132 5
    (7,20]30
    (20,35]50
    (35,45]70
    >4590
    植被覆盖度/%>85100.182 3
    (65,85]20
    (50,65]30
    (35,50]50
    ≤3570
    地质灾害易发性100.089 5
    较低30
    50
    较高70
    90
    土地利用类型林地10.206 2
    湿地5
    草地20
    耕地、园地50
    建设用地90
    距水系距离/km≤1100.101 5
    (1,5]30
    (5,10]50
    (10,15]70
    >1590
    距建设用地距离/km>15200.162 0
    (10,15]30
    (5,10]60
    (2,5]80
    ≤290
      注:阻力值和权重无量纲。
    下载: 导出CSV

    表  2  各县生态源地面积

    Table  2.   Ecological source area of each county

    县(市)生态源地面积/km2分布占比/%
    阿坝县 2 578.88 9.03
    黑水县2 406.128.43
    红原县1 084.683.80
    金川县1 001.623.51
    九寨沟县2 574.689.02
    理县1 632.835.72
    马尔康市1 486.305.21
    茂县939.833.29
    壤塘县1 899.006.65
    若尔盖县5 301.4218.57
    松潘县2 239.597.84
    汶川县2 694.139.44
    小金县2 703.759.47
    下载: 导出CSV
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  • 收稿日期:  2022-08-09
  • 录用日期:  2023-01-05
  • 修回日期:  2022-11-01
  • 网络出版日期:  2023-05-15

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