人民珠江2016，Vol.37Issue(7)：37-43,7.DOI:10.3969/j.issn.1001-9235.2016.07.005
王英水库灌区水旱交替特征分析
Analysis on Characteristics of Alternate Drought and Flood in the Irrigation District of Wangying Reservoir
摘要
Abstract
Based on the daily precipitation data of the meteorological station of Xianning, Yangxin and Wangying, it took the Long-cy-cle Drought-Flood Abrupt Alternation Index ( short for LDFAI Index ) and Short -cycle Drought -Flood Abrupt Alternation Index ( short for SDFAI Index) to analyze the rule and course of flood and drought alternation which happened in the Irrigation District of Wangying Reservoir, exploring the influence which flood and drought alternation had on agricultural production. These results were as follows:The changing rule of flood and drought alternation of Xianning Station was in accordance with Wangying Station , with alterna-tion frequency of 4. 17 year /time and 4. 44 year /time, respectively; Moreover, alternation frequency of the two station increased with the passing of time. Transformation from flooding to drought in the Xianning Station which occupied the major position replaced by trans-formation from drought to flooding gradually, while years of high LDFAI and low LDFAI alternated without obvious leading. Phenomena of flood and drought alternation of Yangxin Station mostly appeared before 1996, after that, changing of the LDFAI Index turned to be mild. The LDFAI Index was higher in severe flood years and drought years than normal years, besides, the higher the LDFAI Index was, the lager agricultural disaster area was.关键词
旱涝急转/长周期旱涝急转指数/短周期旱涝急转指数/王英水库Key words
flood and drought alternation/LDFAI Index/SDFAI Index/Wangying Reservoir分类
农业科技引用本文复制引用
方永旭,陈灿,胡铁松..王英水库灌区水旱交替特征分析[J].人民珠江,2016,37(7):37-43,7.基金项目
国家自然科学基金重点项目(51339004) （51339004）
