[1]QI Donglin,LI Xiaodong,SU Wenjiang,et al.Tendency of Spatiotemporal Evolution of Wind Erosion Climatic Erosivity in Qinghai Province in Recent 50 Years[J].Research of Soil and Water Conservation,2015,22(06):234-239.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
22
Number of periods:
2015 06
Page number:
234-239
Column:
Public date:
2015-12-28
- Title:
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Tendency of Spatiotemporal Evolution of Wind Erosion Climatic Erosivity in Qinghai Province in Recent 50 Years
- Author(s):
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QI Donglin1, LI Xiaodong1,2, SU Wenjiang1, ZHOU Wanfu1, XIAO Hongbin1
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1. Qinghai Institute of Meteorological Science, Xining 810001, China;
2. Institute of Plateau Meteorology, CMA, Chengdu 610072, China
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- Keywords:
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wind erosion climatic erosivity; wind erosion climatic erosivity factor; relative contribution rate; Mann-Kendall test; Qinghai Province
- CLC:
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P425.6
- DOI:
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- Abstract:
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By making use of calculation method of wind erosion climatic erosivity factor index developed by FAO and observation data from 43 meteorological stations during 1961 to 2010 in Qinghai Province, we analyzed the basic features of wind erosion climatic erosivity. The results showed that the range of wind erosion climatic erosivity factor index of C value varied from -12.9 to 160.1; the average of C value was 32.4 in Qinghai Province. Spatially, C value displayed the decrease trend from northwest to southeast and the maximum of C value appeared at Mangai in the Qaidam Basin. Wind erosion climatic erosivity factor had seasonal and inter-monthly variation, the highest value showed in spring, the second one in winter and the lowest one in summer. Wind erosion climatic erosivity factor had the decrease tendency in recent 50 years which revealed that wind erosion climatic erosivity was reducing. Wind speed was main restricting factors of wind erosion climatic erosivity. The relationship between wind erosion climatic erosivity, precipitation and sandstorm days was not significant.