[1]XIAO Weiwei,AN Bin.Spatiotemporal Variability of Wind Speed in the Loess Plateau During 1960—2017[J].Research of Soil and Water Conservation,2023,30(04):103-109.[doi:10.13869/j.cnki.rswc.2023.04.020.]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 04
Page number:
103-109
Column:
Public date:
2023-06-10
- Title:
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Spatiotemporal Variability of Wind Speed in the Loess Plateau During 1960—2017
- Author(s):
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XIAO Weiwei1,2, AN Bin1,2
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(1.School of Tourism & Environment, Ankang University, Ankang, Shaanxi 725000, China; 2.Academician Expert Workstation of Shaanxi Association for Science and Technology, Ankang, Shaanxi 725000, China)
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- Keywords:
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wind speed; climate tendency rate; temporal and spatial change; the Loess Plateau
- CLC:
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P425.4
- DOI:
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10.13869/j.cnki.rswc.2023.04.020.
- Abstract:
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[Objective] The aim of this study is to explore the temporal and spatial variation characteristics of wind speed in the Loess Plateau, and then provide reference for regional disaster prevention and mitigation. [Methods] Based on the measured monthly wind speed data of 59 meteorological stations in the Loess Plateau during 1960 to 2017, the temporal and spatial variation trend of wind speed over annual and four seasons in the Loess Plateau was studied by using linear regression, Mann-Kendall test and sliding t-test, etc. [Results](1)The annual average wind speed in the Loess Plateau decreased significantly at the rate of -0.007 5 m/(s·a), with the largest decline in spring, followed by winter and autumn, with the smallest decline in summer. The monthly average wind speed showed a tendency of increasing first but decreasing afterwards, with the fastest decline in April and the slowest decline in July.(2)The wind speed of annual average, summer, autumn and winter decreased abruptly in 1980s, and the average wind speed in spring did not change abruptly. After the abrupt change, the average wind speed declined the fastest in winter and the slowest in autumn.(3)The spatial distribution of the average wind speed and the change rate of annual and seasonal wind speed showed the characteristics of high in the northwest and low in the southeast. Meteorological stations with decline of wind speed were the most in spring, and the least in summer.(4)The rise of AO index, climate warming and the increase of surface vegetation cover might lead to the long-term downward trend of wind speed in the Loess Plateau. [Conclusion] In the Loess Plateau, spring should be taken as the key period in terms of wind prevention, and the northwest should be taken as the key prevention area in which the construction of disaster prevention and mitigation capacity should be strengthened.