• Spectroscopy and Spectral Analysis
  • Vol. 42, Issue 4, 1192 (2022)
Dong-rong PAN1、*, Tian-hu HAN2、2;, and Hao-wen YAN1、1; *;
Author Affiliations
  • 11. Faculty of Geomatics, Lanzhou Jiaotong University, Lanzhou 730070, China
  • 22. Gansu Grassland Technical Extension Station, Lanzhou 730010, China
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    DOI: 10.3964/j.issn.1000-0593(2022)04-1192-07 Cite this Article
    Dong-rong PAN, Tian-hu HAN, Hao-wen YAN. Spatiotemporal Dynamics of Vegetation Coverage in Different Ecological Areas of the Qilian Mountains Based on Spectral Data[J]. Spectroscopy and Spectral Analysis, 2022, 42(4): 1192 Copy Citation Text show less
    The ecological regionalization of Qilian Mountains
    Fig. 1. The ecological regionalization of Qilian Mountains
    Monthly variations of NDVI in the Qilian Mountains
    Fig. 2. Monthly variations of NDVI in the Qilian Mountains
    Annual variations trend of NDVI in the Qilian Mountains from 1998 to 2018
    Fig. 3. Annual variations trend of NDVI in the Qilian Mountains from 1998 to 2018
    Variation trends of NDVI in the Qilian Mountains
    Fig. 4. Variation trends of NDVI in the Qilian Mountains
    Spatial distribution of NDVI
    Fig. 5. Spatial distribution of NDVI
    Spatial distribution of NDVI in the Qilian Mountains
    Fig. 6. Spatial distribution of NDVI in the Qilian Mountains
    Spatial distribution trends of NDVI in the Qilian Mountains from 1998 to 2018
    Fig. 7. Spatial distribution trends of NDVI in the Qilian Mountains from 1998 to 2018
    Spatial distribution variation coefficients of NDVI in Qilian Mountains from 1998 to 2018
    Fig. 8. Spatial distribution variation coefficients of NDVI in Qilian Mountains from 1998 to 2018
    Spatial distribution future evolution trends of NDVI in the Qilian Mountains
    Fig. 9. Spatial distribution future evolution trends of NDVI in the Qilian Mountains
    生态区
    编号
    生态区名称面积
    /km2
    所占
    比例/%
    1帕米尔-昆仑山-阿尔金山高寒荒漠草原生态区10.100.54
    2柴达木盆地荒漠生态区530.7028.18
    3祁连山森林与高寒草原生态区1 256.4266.71
    4内蒙古高原中部草原化荒漠生态区17.350.92
    5江河源区-甘南高寒草甸草原生态区33.391.77
    6内蒙古高原中部-陇中荒漠草原生态区35.341.88
    7内蒙古高原西部-北山山地荒漠生态区0.002 5/
    Table 1. Area and proportion of different ecological zones in Qilian Mountains
    区域变化率/(%·a-1)区域变化率/(%·a-1)
    10.2750.57
    20.1460.38
    30.377/
    40.54
    Table 2. Rates of NDVI variations in different regions in the Qilian Mountains
    发展方向演化趋势面积
    ×104 km2
    所占
    比例/%
    良性方向持续性-轻微改善5.1027.83
    持续性-明显改善2.2612.35
    反持续性-明显恶化0.010.04
    反持续性-轻微恶化0.482.61
    恶性方向持续性-明显恶化0.563.06
    持续性-轻微恶化4.1222.50
    反持续性-轻微改善0.140.75
    反持续性-明显改善0.020.09
    基本不变基本不变5.6430.77
    Table 3. Evolution trend characteristics of NDVI in the Qilian Mountains
    Dong-rong PAN, Tian-hu HAN, Hao-wen YAN. Spatiotemporal Dynamics of Vegetation Coverage in Different Ecological Areas of the Qilian Mountains Based on Spectral Data[J]. Spectroscopy and Spectral Analysis, 2022, 42(4): 1192
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