Remote Sensing Technology and Application, Volume. 40, Issue 2, 368(2025)

Ecological Quality Assessment of Lijiang River Basin based on MGCI and RSEI

Mingyang ZHANG, Cheng WANG*, Xiaohuan XI, and Lanwei ZHU
Author Affiliations
  • College of Geomatics and Geoinformation, Guilin University of Technology, Guilin541004, China
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    Figures & Tables(8)
    Landsat image of the study area
    3D scatter plots of sampling points NDVI, WET, NDSI, LST, RSEI
    Remote Sensing Ecology Index images
    • Table 1. UNEP-WCMC Mountain Grade Criteria

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      Table 1. UNEP-WCMC Mountain Grade Criteria

      山地分类高程/m坡度/°海拔范围半径/m
      1>4500Not usedNot used
      23500~4500Not usedNot used
      32500~3499Not usedNot used
      41500~2499>2Not used
      51000~1499>5>300
      6300~999Not used>300
    • Table 2. The ecological environment situation scale

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      Table 2. The ecological environment situation scale

      级别指数特征描述
      差(0<RSEI0.2)植被覆盖度低,干旱少雨,岩石裸露,土壤干化,人类生活明显受到限制
      较差(0.2<RSEI0.4)植被覆盖度较低,干旱少雨,物种较少,存在明显的限制人类生活的因素
      一般(0.4<RSEI0.6)植被覆盖度中等,雨量适中,较适合人类生活,存在限制人类生存的因子
      良(0.6<RSEI0.8)植被覆盖度较高,生物多样性较丰富,土壤有机质较丰富,气候较适宜,适合人类居住
      优(0.8<RSEI1)植被覆盖度高,生物多样性丰富,土壤有机质丰富,气候湿润怡人,生态环境稳定
    • Table 3. Principal component analysis results

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      Table 3. Principal component analysis results

      年份指标PC1PC2PC3PC4
      绿度0.2540.6850.670-0.134
      湿度0.6760.194-0.546-0.455
      干度-0.6870.373-0.237-0.576
      2005热度-0.0820.595-0.4440.665
      特征值0.1660.0430.0180.001
      贡献率/%72.5618.767.950.73
      遥感生态指数0.503
      绿度0.3590.8630.3190.157
      湿度0.650-0.5040.5130.243
      干度-0.645-0.0250.7610.067
      2010热度-0.179-0.012-0.2370.955
      特征值0.1180.0210.0080.003
      贡献率/%78.5914.075.182.16
      遥感生态指数0.524
      绿度0.3750.854-0.2230.285
      湿度0.647-0.515-0.4430.346
      干度-0.655-0.008-0.6590.369
      2015热度-0.109-0.0760.5650.814
      特征值0.1260.0280.0030.002
      贡献率/%78.8517.661.941.55
      遥感生态指数0.606
      绿度0.4360.8470.204-0.164
      湿度0.579-0.5230.519-0.301
      干度-0.6510.1340.631-0.429
      2019热度-0.9370.0620.5610.819
      特征值0.1190.0290.0040.004
      贡献率/%75.6419.622.682.06
      遥感生态指数0.606
    • Table 4. Ecological environment grade area and ratio

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      Table 4. Ecological environment grade area and ratio

      RSEI等级2005年2010年2015年2019年
      面积/km2百分比/%面积/km2百分比/%面积/km2百分比/%面积/km2百分比/%
      612.589.85431.296.82339.055.40279.174.39
      较差1 292.1920.781 252.5619.82833.6713.28583.4289.16
      1 822.8329.322 263.5935.821 740.0327.721 273.26420.01
      1 764.3228.381 880.8329.762 389.4738.072 513.4039.50
      725.7811.67491.717.78974.9815.531 714.2636.94
    • Table 5. Comparison of MGCI and RSEI results

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      Table 5. Comparison of MGCI and RSEI results

      年份2005年2010年2015年2019年
      MGCI0.4280.5050.5580.635
      RESI0.5030.5240.6060.643
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    Mingyang ZHANG, Cheng WANG, Xiaohuan XI, Lanwei ZHU. Ecological Quality Assessment of Lijiang River Basin based on MGCI and RSEI[J]. Remote Sensing Technology and Application, 2025, 40(2): 368

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    Paper Information

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    Received: Sep. 8, 2023

    Accepted: --

    Published Online: May. 23, 2025

    The Author Email: Cheng WANG (wangcheng@aircas.ac.cn)

    DOI:10.11873/j.issn.1004-0323.2025.2.0368

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