| Cite this article: | 高雅文,邓可楠,张月,等.基于农业旱涝指标的湖北省棉花生育期内旱涝急转特征分析[J].灌溉排水学报,0,():-. |
| GAO ya-wen,DENG Ke-nan,ZHANG Yue,et al.基于农业旱涝指标的湖北省棉花生育期内旱涝急转特征分析[J].灌溉排水学报,0,():-. |
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| Analyzing the Variations of Drought and Flood Abrupt Alternation during Different Cotton Growth Stages in Hubei Province Using an Agro-meteorology Index |
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GAO ya-wen1, DENG Ke-nan1, ZHANG Yue1, QIAN Long2, CHEN Cheng3, LUO Yun-ying4, HUANG Tao-xing5, CHEN Li-juan6
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1.School of Water Resources and Hydropower Engineering, Wuhan University;2.School of Civil Engineering, Sun Yat-sen University;3.College of Water Resources Science and Engineering, Yangzhou University;4.School of Environment, Jinan University;5.Huadong Engineering Corporation Limited, Power China;6.Hubei Water Resources Technical college
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| Abstract: |
| [Objective] To investigate the spatial-temporal variations of drought and flood abrupt alternation (DFAA in short) at different growth stages of cotton in Hubei province and thus provide reference for water disaster prevention and control. [Methods]Assessing daily drought and flood conditions in fields using the SAPEI (Standardized Antecedent Precipitation Evapotranspiration Index) and then identifying individual DFAA events. Based on daily weather data from 26 weather stations in Hubei province, the spatial-temporal variations of DFAA events in Hubei from 1961 to 2019 were obtained. [Results] The SAPEI index is appropriate for describing the field moisture status and identifying DFAA events in Hubei Province. In regard of the entire cotton growth stage, the intensity of drought-flood alternation was approximately five times that of flood-drought alternation. At the flowering and boll-forming stage, cotton suffered DFAA the most times and were with the largest average stress intensity; at the budding stage, the frequency of DFAS was less but its intensity per event was relatively great; in comparison, at the boll-opening stage, DFAAs were with the lowest intensity but occurred more frequently. Northwest Hubei and Honghu area were DFAA-prone areas, where both drought-flood alternation and flood-drought alternation occurred frequently. As for various decades, the DFAA events were most severe during 1970s; in addition, since 1990s, DFAA events have tended to be more widespread and with stronger intensity. [Conclusion] The DFAA of cotton fields in Hubei are majorly drought-flood alternations, and most likely to occur at the flowering and boll-forming stage with high stress intensity. Thus, it is crucial to pay special attention to the drought-flood alternations during flowering and boll-forming stage in Hubei, especially for Northeastern Hubei and Honghu area. |
| Key words: drought and flood abrupt alternation; standardized antecedent precipitation evapotranspiration index (SAPEI); cotton; Hubei Province; irrigation and drainage; drought; waterlogging |
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