文章摘要
田杏敏, 李凤英, 何小武, 万小星, 吕祥云, 方立志, 余悫.鄱阳湖流域日降雨的侵蚀性雨量标准研究[J].水土保持学报,2021,35(3):185~189
鄱阳湖流域日降雨的侵蚀性雨量标准研究
Study on Daily Erosive Rainfall Standard in the Poyang Lake Basin
投稿时间:2020-12-01  
DOI:10.13870/j.cnki.stbcxb.2021.03.026
中文关键词: 鄱阳湖流域  侵蚀性雨量标准  日降雨  降雨侵蚀力
英文关键词: Poyang Lake Basin  erosive rainfall standard  daily rainfall  rainfall erosivity
基金项目:江西省水利厅服务项目"水土流失因子率定和水土保持措施效益定额测定"(JXZS201811-J004)
作者单位E-mail
田杏敏1, 李凤英1, 何小武1, 万小星2, 吕祥云1, 方立志1, 余悫3 1. 江西农业大学国土资源与环境学院, 南昌 330045

2. 江西省水土保持监督监测站
, 南昌 330009

3. 江西省修水县水土保持局
, 江西 修水 332400 
he-xw@163.com 
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中文摘要:
      确定日降雨的侵蚀性雨量标准是提高基于日降雨数据的降雨侵蚀力模型计算精度的重要前提。利用鄱阳湖流域降雨数据,采用最小偏差法,确定该流域日降雨的侵蚀力雨量标准。结果表明:(1)鄱阳湖流域次降雨的侵蚀性雨量标准为14.0 mm,降雨侵蚀力偏差系数为1.8%,土壤侵蚀损失率2.8%,降雨场次错选度为14.9%。(2)流域内各站点的逐月降雨量均表现为6月达到峰值的倒"V"形规律;侵蚀性次降雨中,降雨时间跨越2日或以上的类型最多,占总次数的54.2%。(3)流域日降雨的侵蚀性雨量标准为10.0 mm,该标准下年均次、日降雨侵蚀力偏差值为0.11%。
英文摘要:
      Determining the erosive rainfall standard of daily rainfall is an important prerequisite for improving the calculation accuracy of the simple model based on the daily rainfall. The standards of erosive daily rainfall in the Poyang Lake Basin were studied with the method of minimum deviation. The results showed that:(1) The erosive event rainfall standard in Poyang Lake Basin was 14.0 mm, where the coefficient deviation was 1.8%, the loss rate for erosion amount was 2.8% and the mixing index was 14.9%. (2) The monthly rainfall at each station was the highest rainfall in June with an inverted "V" shape; the type of rainfall time spanning two days or more was the most, accounting for 52.4% of the total erosive event rainfall. (3) The erosive daily rainfall standard in the Poyang Lake Basin was 10.0 mm, where the deviation value of the annual average rainfall erosivity between daily and event rainfall was 0.11%.
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