[1]GAO Fang,LIU Ji,CHEN Wei,et al.Study on Propagation Characteristics and Response Probabilities of Meteorological and Hydrological Drought Zones in the Upper Reaches of Huai River[J].Research of Soil and Water Conservation,2023,30(05):257-265.[doi:10.13869/j.cnki.rswc.2023.05.041.]
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Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
30
Number of periods:
2023 05
Page number:
257-265
Column:
Public date:
2023-08-10
- Title:
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Study on Propagation Characteristics and Response Probabilities of Meteorological and Hydrological Drought Zones in the Upper Reaches of Huai River
- Author(s):
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GAO Fang1,2, LIU Ji1,2, CHEN Wei3, YANG Shaokang1,2, FENG Hao1,2, LIU Yanli4,5
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(1.Engineering Research Center of Eco-environment in Three Gorges Reservoir Region,Yichang,Hubei 443002,China; 2.College of Hydraulic & Environmental Engineering,China Three Gorges University,Yichang,Hubei 443002,China; 3.Hydrological Water Resources Survey Bureau of Jingzhou,Jingzhou 434099,China; 4.State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering,Nanjing Hydraulic Research Institute,Nanjing 210098,China; 5.Research Center for Climate Change,Ministry of......)
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- Keywords:
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drought propagation characteristics; response probability; Bayesian network; Copula; the upper reaches of Huai River
- CLC:
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P339
- DOI:
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10.13869/j.cnki.rswc.2023.05.041.
- Abstract:
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[Objective] Exploring the propagation characteristics and response probability of meteorological hydrological drought is conducive to providing scientific reference for hydrological drought early warning. [Methods] Based on the meteorological and hydrological data of 35 meteorological stations and Wangjiaba and Xixian hydrologic stations in the upper reaches of the Huai River from 1980 to 2013, the basin above Wangjiaba was divided into two sub basins: Xixian(XX)and Xixian Wangjiaba interval(WJB). The Standardized Precipitation Evapotranspiration Index(SPEI)and Standardized Runoff Index(SRI)of each region were calculated respectively, and the meteorological hydrological drought response time of each region was calculated by using the correlation coefficient method. The hydrological drought events were matched to obtain the meteorological hydrological drought propagation characteristics of different regions. Further, combined with Copula joint distribution function and Bayesian network, the meteorological hydrological drought response probability model of the upper reaches of the Huai River was constructed to calculate the meteorological hydrological drought response probability under different return periods. [Results](1)The response time of meteorological hydrological drought in WJB and XX was 7 months and 5 months, respectively, the average drought propagation duration in the two regions was about 1 month, and the average drought relief duration was about 2 months.(2)The durations and intensities of meteorological drought in WJB and XX were generally less than the corresponding hydrological drought characteristic values, and the sensitivity of hydrological drought in WJB to meteorological drought was lower than XX.(3)The meteorological hydrological drought response probabilities of WJB and XX were in direct proportion to the duration, intensity and intensity of meteorological drought. WJB was more prone to hydrological drought events with longer drought duration, while XX was more prone to hydrological drought events with greater drought intensity and intensity.(4)When meteorological drought spreaded to hydrological drought with the same return period, the response probability of meteorological hydrological drought decreased with the increase of return period, and the response probability of XX meteorological hydrological drought was greater than WJB. [Conclusion] There were differences in the meteorological and hydrological drought propagation characteristics and response probability between XX and WJB. Therefore, the hydrological drought early warning research should be strengthened based on the differences.