| 引用本文: | 李励漫,李 芬,许福丽,等.江汉平原小麦渍害精细化风险评估[J].灌溉排水学报,2025,44(4):65-71. |
| LI Liman,LI Fen,XU Fuli,et al.江汉平原小麦渍害精细化风险评估[J].灌溉排水学报,2025,44(4):65-71. |
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| 摘要: |
| 【目的】渍害是江汉平原小麦生长的主要农业气象灾害，为评估江汉平原小麦渍害风险。【方法】基于2000—2020年全球无缝隙日地表土壤湿度数据集，综合考虑生育时期和品种的耐渍性、土壤温度对受渍阈值的影响，重构了受渍程度指数（WI），研究江汉平原小麦渍害风险。【结果】江汉平原海拔与历年WI均值显著负相关，其相关系数高达-0.83；4月降水量是影响江汉平原WI的关键因子；荆州区、监利市、潜江市、汉川市、江陵县、仙桃市、天门市、枝江市、当阳市、汉阳区为渍害高风险区，钟祥市、沙洋县、京山市、荆门市、应城市为渍害低风险区，江汉平原小麦受渍阈值WI=10.97。【结论】新增了生育时期和土壤温度产生的耐渍性差异对渍害影响的小麦渍害风险评估方法较现有其他方法更为全面，绘制1 km2空间分辨率的江汉平原小麦渍害风险图为区域小麦生产提供了重要的指导依据。 |
| 关键词: 受渍程度指数；小麦渍害；气象产量；江汉平原；风险评估 |
| DOI：10.13522/j.cnki.ggps.2024300 |
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| Waterlogging risk assessment for wheat cultivation in the Jianghan Plain region |
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LI Liman, LI Fen, XU Fuli, DENG Chaozhong, XIANG Qian, XIONG Qinxue
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1. College of Agriculture, Yangtze University, Jingzhou 434025, China; 2. Changyang Agricultural Bureau,
Changyang 443500, China; 3. Nantong Airport Group Co., Ltd, Nantong 226000, China
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| Abstract: |
| 【Objective】Drought and waterlogging are two major abiotic stresses that hinder crop growth worldwide. Understanding their spatiotemporal variation in a region is crucial for mitigating their detrimental impacts and safeguarding food production. This study proposes a method to assess waterlogging risk and applies it to wheat cultivation in the Jianghan Plain of Central China.【Method】The proposed assessment method is based on soil moisture and the waterlogging index (WI). Using daily soil-surface moisture data from 2000 to 2020 across the basin, we calculated the WI, considering the differences in waterlogging tolerance among wheat varieties, their growing stages, and the influence of soil temperature on the waterlogging threshold.【Result】From 2000 to 2020, the altitude of different areas in the plain was significantly negatively correlated with the average WI, with a correlation coefficient of -0.83. Precipitation in April was identified as a key factor influencing the WI. Areas with high waterlogging risk include Jingzhou District, Jianli City, Qianjiang City, Hanchuan City, Jiangling County, Xiantao City, Tianmen City, Zhijiang City, Dangyang City, and Hanyang District. Conversely, areas with low waterlogging risk include Zhongxiang City, Shayang County, Jingshan City, Jingmen City, and Yingcheng City. The critical threshold for wheat waterlogging in the plain was found to be WI = 10.97.【Conclusion】The method developed for assessing waterlogging risk offers an improvement over existing approaches. Its application to wheat production in the Jianghan Plain, with a spatial resolution of 1 km2, can assist in the development of effective mitigation strategies to safeguard wheat production in various areas of the plain. |
| Key words: waterlogging index; wheat waterlogging; meteorological yield; Jianghan Plain; waterlogging risk assessment |
