[1]LIU Le,YUE Dapeng,ZHAO Jingbo,et al.Flood Disasters and Climate Characteristics in Tang Dynasty in the Middle South of Loess Plateau in Shaanxi[J].Research of Soil and Water Conservation,2022,29(06):284-289,297.
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 06
Page number:
284-289,297
Column:
Public date:
2022-10-20
- Title:
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Flood Disasters and Climate Characteristics in Tang Dynasty in the Middle South of Loess Plateau in Shaanxi
- Author(s):
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LIU Le1, YUE Dapeng1, ZHAO Jingbo1,2, ZHAO Yan1
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(1.School of Geography and Tourism, Shaanxi Normal University, Xi'an 710119, China; 2.State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an 710061, China)
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- Keywords:
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flood disaster; flood periodicity; climatic characteristics; Tang Dynasty; the Loess Plateau in Shaanxi
- CLC:
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P426.616
- DOI:
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- Abstract:
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In view of the significant impact of flood disasters on the ecological construction and economic development of the middle south Loess Plateau in Shaanxi, based on historical records of flood disaster combined with the methods of mathematical statistics, anomaly analysis, continuous wavelet transform, the humidity index method, the varying regularity of flood disasters and the climate change in the middle south of Loess Plateau were analysed in Shaanxi Province in Tang dynasty(618—907 AD). The conclusions are as follows: The frequency of flood disasters can be divided into four stages, 618—637 and 728—847 are the high frequency period of flood disasters, 638—727 and 848—907 are the low frequency period. The variation of flood frequency is affected by the summer monsoon showing a downward fluctuating trend. Flood disaster grade has periods of 2~5 years, 5~9 years, 20~30 years and 52~80 years, inferring flood disaster is related to ENSO and the positive and negative phases of PDO. In terms of space, the high frequency area of flood disaster is mainly located in the gully region of south of Laoshan Mountain. Dry and wet characteristics of Climate were that, the climate was wet during 618—637, dry in 638—837 but existing scales of 10 years and 20 years of wet stage. From 838 to 907, it entered into the state of dry and wet alternation in a scale of about 10 years. In the Tang Dynasty, the major flood years were closely related to the long duration of precipitation, extreme precipitation events such as rainstorm and frequent climate fluctuations.