[1]WANG Yaqin,FAN Wenbo,XU Zhongyu,et al.Spatiotemporal Variation Characteristics of Erosivity of Wind Erosion Climate in Xinjiang in Recent 50 Years[J].Research of Soil and Water Conservation,2021,28(04):22-28.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 04
Page number:
22-28
Column:
Public date:
2021-08-10
- Title:
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Spatiotemporal Variation Characteristics of Erosivity of Wind Erosion Climate in Xinjiang in Recent 50 Years
- Author(s):
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WANG Yaqin1,2, FAN Wenbo1,2, XU Zhongyu3, DONG Qianqian1,2, WEI Jiantao1,2, LI Changxiao1,2
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(1.College of Water &Architecture Engineering, Shihezi University, Shihezi, Xinjiang 832000, China;2.Key Laboratory of Modern Water-saving Irrigation of Xinjiang Production &Construction Group, Shihezi University,Shihezi, Xinjiang 832000, China;3.College of Science, Shihezi University, Shihezi, Xinjiang 832000, China)
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- Keywords:
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Xinjiang Uygur Autonomous Region; climatic factors of wind erosion; spatiotemporal variation
- CLC:
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S157.1
- DOI:
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- Abstract:
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In order to evaluate the potential wind erosion capacity and the evolutionary characteristics of desertification in Xinjiang, we calculated the wind erosion climatic erosion force in Xinjiang from 1969 to 2019 using observations from 41 ground-based meteorological stations in the Xinjiang. The spatial-temporal characteristics of erosivity of wind erosion climate in Xinjiang were discussed by means of climate tendency rate, Mann Kendall(M-K)test and geostatistical analysis. The results show that:(1)in recent 50 years, the erosivity of wind erosion climate in Xinjiang showed a significant fluctuating downward trend(p<0.01), the decreasing rate was 1.14 per year, and the C values in different regions were different; the C values in northern and southern Xinjiang showed a rising trend around 2012;(2)C value had obvious seasonal characteristics, the highest value showed in spring, the higher value in summer, the lowest value in winter, the minimum value appeared in January and reached the maximum value in May;(3)the wind erosion climate factor index in the whole region showed a spatial pattern of decreasing from east to west and increasing from south to north; with the passage of time, the grade of wind erosion in the whole region had decreased, and the scope of extremely heavy erosion area shrinked, only distributed in Alashankou, junction between Zhundong area and Turpan-Hami basin;(4)the climatic factors of wind erosion in Xinjiang began to change in 1993, and entered a significant downward trend in the same year; they began to mutate in southern and northern Xinjiang in 1975 and 1998, respectively, and entered a significant downward trend in 1976 and 2006, respectively, and decreased significantly in eastern Xinjiang after 1979 without mutation. In general, wind erosion widespread throughout the territory and was dominated by slight or mild erosion. The wind speed in the area of very heavy wind erosion was significantly higher than that in other areas, indicating that there was an obvious relationship between the magnitude of wind erosion climate erosion force and wind speed.