中山大学学报（自然科学版）2011，Vol.50Issue(6)：114-119,6.
东江径流年内分配不均匀性的年际变异识别
Variability Recognition of the Nonuniformity of Annual Streamflow Distribution in the Dongjiang River
摘要
Abstract
Based on the likelihood ratio method testing in the mean and the Schwarz Information Criterion testing in the variance, the variability of nonuniform coefficients of annual streamflow distribution in the gauging runoff series and reconstructed runoff series returning water regulation of three large reservoirs in the Dongjiang River is analyzed in this paper. Main conclusions are as follows; Compared to reconstructed series, annual mean values of the nonuniform coefficient of gauging series significantly decrease, being between 0. 47 - 0. 63, while annual variation coefficients remarkably increase, being between 0. 34 -0. 48. The change-point of the nonuniform coefficients obviously occurred in 1968. Both annual mean values and variation coefficients decrease distinctly after the change point, with values between 0. 40 -0. 54 and between 0. 25 - 0. 32 respectively. The segmentation point of the nonuniform coefficient of reconstructed series also occurred in 1968 regardless of no tested change point. Annual mean values after the segmentation po'mt show little change, but annual variation coefficients greatly decrease. The variability of the nonuniform coefficients in annual streamflow distribution is mainly resulted from water regulation of three reservoirs in the Donjiang River. Some other factors influence the annual variation range.关键词
径流年内分配/不均匀系数/变异识别/东江Key words
annual streamflow distribution/ nonuniform coefficient/ variability recognition/ the Dongjiang River分类
天文与地球科学引用本文复制引用
涂新军,陈晓宏,李宁,张丽娟..东江径流年内分配不均匀性的年际变异识别[J].中山大学学报（自然科学版）,2011,50(6):114-119,6.基金项目
教育部人文社会科学研究青年基金资助项目(09YJC910010) （09YJC910010）
国家自然科学基金重点资助项目(50839005) （50839005）
广东省科技计划基金资助项目(2010B050300010) （2010B050300010）
