[1]GAO Siqi,DONG Guotao,JIANG Xiaohui,et al.Analysis of Vegetation Coverage Changes and Natural Driving Factors in the Three-River Headwaters Region Based on Geographical Detector[J].Research of Soil and Water Conservation,2022,29(04):336-343.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 04
Page number:
336-343
Column:
Public date:
2022-06-20
- Title:
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Analysis of Vegetation Coverage Changes and Natural Driving Factors in the Three-River Headwaters Region Based on Geographical Detector
- Author(s):
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GAO Siqi1,2, DONG Guotao2,3, JIANG Xiaohui1, NIE Tong1,2, GUO Xinwei2, DANG Suzhen2
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(1.College of Urban and Environmental Sciences, Northwest University, Xi'an 710127, China; 2.Yellow River Institute of Hydraulic Research, Yellow River Conservancy Commission, Zhengzhou 450003, China; 3.Heihe Water Resources and Ecological Protection Research Center, Lanzhou 730030, China)
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- Keywords:
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NDVI; spatiotemporal changes; natural driving forces; geographical detector; Three-River Headwaters region
- CLC:
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Q948.1
- DOI:
-
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- Abstract:
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To reveal the influence of natural factors on the vegetation coverage of the Three-River Headwaters region, based on the GIMMS NDVI data and 8 natural factors of the Three-River Headwaters region from 1982 to 2015, the temporal and spatial variation characteristics of the NDVI in the Three-River Headwaters region were analyzed by linear regression analysis, and the spatial heterogeneity and natural driving factors were analyzed by geographical detector. The results showed that: the distribution of the NDVI was high in the southeast and low in the northwest, the change pattern increased in the west and north, decreased in the middle and south, and the mean value of the NDVI from 1982 to 2015 increased; the annual precipitation had the greatest influence on the spatial distribution of the NDVI in the Three-River Headwaters region(0.551); the average annual temperature, vegetation type and elevation also explained the vegetation coverage in the Three-River Headwaters region well; the influence of natural factors on the NDVI was interactive, showing mutual enhancement and nonlinear enhancement. It was obvious that the annual precipitation was the most important factor affecting the spatial distribution of the NDVI in the Three-River Headwaters region, and the interaction with other factors can increase the influence on the NDVI.