[1]WANG Fei,ZHU Zhongyuan,HAO Xiangyun,et al.Variation Characteristics of Snowfall Concentration Period in Xilin River Basin[J].Research of Soil and Water Conservation,2019,26(03):239-247.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
26
Number of periods:
2019 03
Page number:
239-247
Column:
Public date:
2019-04-12
- Title:
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Variation Characteristics of Snowfall Concentration Period in Xilin River Basin
- Author(s):
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WANG Fei, ZHU Zhongyuan, HAO Xiangyun, HAN Dongdong, WANG Huimin
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College of Water Resources and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China
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- Keywords:
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Xilin River Basin; concentration; concentration period; period analysis; R/S analysis
- CLC:
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P426.3
- DOI:
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- Abstract:
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The snowfall concentration (PCD), concentration period (PCP) of the basin was calculated by using the winter precipitation data of four national meteorological stations in the Xilin River Basin from 1970 to 2016, and linear trend analysis, Morlet wavelet, Mann-Kendall mutation analysis and R/S analysis methods were used to study the variation characteristics of snowfall concentration and concentration period in the basin over the past 50 years. The results showed that the snowfall at Xilinhot Station was relatively concentrated, while the snowfall at Abaqi Banner was the least concentrated, the southern part of the basin was more concentrated than the north, and the trend of increasing or decreasing concentration was increasing eastward and westward. Snowfalls in most of the stations in the basin had a common concentration period in early December, and the concentration period was more early in the early years. There is a cyclical change with concentration of about 25-year period. During this period, snowfall underwent alternating-concentration-concentration alternating changes. The concentration period changed with 24-year period as the main cycle, and there was early-late-early alternation in the main cycle. Changes and the concentration period after 2016 will be still in the early stages. The snowfall concentration of stations in the basin will be anti-sustainability in the future.