Journal of Natural Resources, Volume. 35, Issue 4, 925(2020)
Spatio-temporal change of land desertification sensitivity in Northern China from 2000 to 2018 based on MODIS-NDVI
Figures & Tables(6)
Fig. 1. Change of land desertification sensitivity area in different grades in 14 provincial-level regions of Northern China from 2000 to 2018
Fig. 2. Spatial pattern of land desertification sensitivity in 14 provincial-level regions of Northern China in 2000, 2010 and 2018
Fig. 3. Rate of change of annual mean temperature, precipitation and strong wind days in 14 provincial-level regions of Northern China from 2000 to 2018
Fig. 4. Rate of change trend of vegetation coverage in 14 provincial-level regions of Northern China from 2000 to 2018
Table 1. Classification criteria and valuation of land desertification sensitivity assessment factors
View tableView in ArticleTable 1. Classification criteria and valuation of land desertification sensitivity assessment factors
指标 植被覆盖度 湿润指数 易起沙尘大风日数/d 坡度/(°) 土壤砂粒含量/% 分级赋值 极易起沙尘 0~0.15 <0.4 >60 0~1 >0.6 9 高度易起沙尘 0.15~0.3 0.4~0.55 40~60 1~2 0.5~0.6 7 中等易起沙尘 0.3~0.45 0.55~0.65 20~40 2~4 0.4~0.5 5 轻度易起沙尘 0.45~0.6 0.65~0.75 10~20 4~6 0.3~0.4 3 不易起沙尘 0.6~1 >0.75 <10 >6 <0.3 1
Table 2. Factors and their weight of land desertification sensitivity assessment
View tableView in ArticleTable 2. Factors and their weight of land desertification sensitivity assessment
目标层 准则层 指标层 指标层权重 与土地沙化敏感性的关系 土地 植被状况 植被覆盖度 0.51 密切相关 沙化 气候条件 大风日数 0.25 高度相关 敏感 湿润指数 0.15 中等相关 程度 土壤质地 土壤表层砂粒含量 0.06 轻度相关 评价 地形条件 坡度 0.03 一般相关
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Ling-ling XU, Hao YAN, Shuan QIAN. Spatio-temporal change of land desertification sensitivity in Northern China from 2000 to 2018 based on MODIS-NDVI[J]. Journal of Natural Resources, 2020, 35(4): 925
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Received: Jan. 24, 2019
Accepted: --
Published Online: Oct. 17, 2020
The Author Email: XU Ling-ling (xulingling2001@126.com)
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