本文選題：分布特征 + 降雨量�。� 參考：《中國農(nóng)村水利水電》2017年04期

【摘要】：科學(xué)分析降雨分布及合理劃分干旱等級,是區(qū)域水資源優(yōu)化配置,灌好關(guān)鍵水,減少旱情危害的關(guān)鍵。針對江西省贛撫平原灌區(qū)1978-2012年氣象數(shù)據(jù)進(jìn)行分析,研究贛撫平原灌區(qū)降雨分布及不同干旱等級分布特征。結(jié)果表明,贛撫平原灌區(qū)降雨在年內(nèi)分布不均勻,年總降雨量偏度系數(shù)偏小,6-9月降雨量年際偏度系數(shù)偏大,年總降雨量值、7-9月降雨量值沒有明顯的趨勢性變化;近35年來受旱年份占比29%,正常年份占比71%;7月份受旱年份較少,以輕旱為主;8月和9月受旱年份占比均為34.3%,較容易受旱。
[Abstract]:Scientific analysis of rainfall distribution and rational division of drought grade are the keys to the optimal allocation of regional water resources, the irrigation of key water and the reduction of drought damage. Based on the meteorological data from 1978 to 2012 in Ganfu Plain Irrigation District of Jiangxi Province, the characteristics of rainfall distribution and drought grade distribution in Ganfu Plain Irrigation area were studied. The results show that the rainfall distribution is uneven in Ganfu Plain, the annual total rainfall deviation coefficient is small and the inter-annual deviation coefficient of annual total rainfall is larger than that of June to September rainfall, and the annual total rainfall value has no obvious trend change in July and September. In recent 35 years, the proportion of drought-stricken years was 29%, and that of normal years was 71- / -7.The drought was mainly light drought in July, while in August and September, the proportion of drought-stricken years was 34.3%, so it was easy to suffer from drought.
【作者單位】： 江西省灌溉試驗(yàn)中心站;
【分類號】：S161.6;S423
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本文編號：1967651