湖南省铁山水库流域降水演变规律  

Changing Characteristics of Precipitation in Tieshan Reservoir Basin of Hu'nan Province

作　　者：蔡锦文 胡国华[1,2] 顾庆福 CAI Jinwen;HU Guohua;GU Qingfu(School of Hydraulic Engineering, Changsha University of Science ＆Technology, Changsha, Hu＇ nan 410114, China;Key Laboratory of Water-Sediment Sciences and Water Disaster prevention of Hu ＇ nan Province, Changsha, Hu＇nan 410114, China;Hydrology ＆ Water Resources Bureau of Hu ＇nan Province, Changsha, Hu＇nan 410007, China)

机构地区：[1]长沙理工大学水利工程学院,湖南长沙410114 [2]水沙科学与水灾害防治湖南省重点实验室,湖南长沙410114 [3]湖南省水文水资源勘测局,湖南长沙410007

出　　处：《水土保持通报》2018年第3期324-327,344,共5页Bulletin of Soil and Water Conservation

基　　金：湖南省重大水利科技计划项目"铁山水库饮用水水源地流域面源污染模拟预测与控制关键技术研究"(2015-257-30227)

摘　　要：[目的]分析铁山水库饮用水水源地的降水演变规律,为流域水资源利用以及铁山水库的调度运行提供依据。[方法]运用线性回归、滑动平均、Mann-Kendall检验、累积距平、滑动t检验和小波分析等方法,分析铁山水库饮用水水源地流域1968—2014年年降水、汛期降水和非汛期降水的演变规律。[结果](1)47a间年降水量、汛期降水量和非汛期降水量均呈现不明显的上升趋势。(2)年降水在1987和2003年发生了显著性突变,汛期降水在1992和2003年发生了显著性突变,非汛期降水未发生显著性突变。(3)年降水和汛期降水存在29a左右的主周期,非汛期降水存在28a左右的主周期,各时期的周期基本一致。[结论]铁山水库各时期的降水演变规律基本一致。[Objective]This paper analyzed the changing characteristics of precipitation in the Tieshan reservoir basin,a drinking water source of Hu＇nan Province,in order to provide basis for the utilization and schedule of water resources in the basin.[Methods]Methods including linear regression,moving average,MannKendall test,accumulative anomalies analysis sliding t-test and wavelet analysis,were used to analyze the changing characteristics of annual precipitation,precipitation in the flood season and precipitation in the non-flood season during the period from 1968 to 2014.[Results]（1） The annual precipitation,precipitation in the flood and non-flood seasons increased slightly over the past 47 years.（2） The annual precipitation showed abrupt change in 1987 and 2003,while the precipitation in the flood season showed abrupt change in 1992 and2003.There was no abrupt precipitation change in the non-flood season.（3） Annual precipitation and precipitation in the flood season had a dominant period of about 29 years,and the precipitation in non-flood season had a dominant period of about 28 years.Basically,the periods for all the precipitations were the same.[Conclusion]The changing characteristics of the annual precipitation,precipitation in the flood and non-flood season were basically consistent with each other in Tieshan reservoir.

关 键 词：MANN-KENDALL检验 MORLET小波分析 降水 铁山水库 

分 类 号：TV125[水利工程—水文学及水资源] P334.5[天文地球—水文科学]