摘要
以鸳鸯池水库1960年-2014年实测入库流量数据为基础,综合运用累积距平、Morlet小波分析等数理统计方法,分析了鸳鸯池水库来水量年内分配、年际变化和周期振荡特征,并提出了自然因素和人类活动对鸳鸯池水库来水量变化影响的时间分界点。结果表明:鸳鸯池水库来水量主要集中在7月-8月,期间多年平均来水量占全年来水量的26133%;1960年-2014年,鸳鸯池水库来水量呈微弱减少趋势,递减率为-01124万m3/10a;鸳鸯池水库来水量在15a时间尺度上周期振荡明显,经历了/多-少-多-少04个交替循环。Mann-Kendall检验分析得出:1960年-1972年期间及2012年-2014年,鸳鸯池水库来水量受自然因素影响较大;1973年-2012年期间水库来水量主要受人类活动影响。
Based on the measured inflow data of‘Jinta Yuanyangchi reservoir’from 1960 to 2014,the paper analyzes the annual distribution,interannual variation and periodical oscillation characteristics of the inflow of the Yuanyangchi reservoirs,and puts forward the time demarcation point of natural factors and human activities on the impact of the amount of water changes.The mathematical statistics methods are used in paper including Cumulative Departure and Morlet Wavelet Analysis.The results show that:the inflow of the Jinta Yuanyangchi reservoir are mainly concentrated in July to August,during which the average inflow amount accounts for 26.33%of the total annual water quantity.From 1960 to 2014,the inflow of the reservoir displayed a decreasing tendency and the declined rate was-0.124×10 8 m 3/10;the‘Yuanyangchi reservoir’inflow takes on periodic oscillation state at 15a timescale,which experienced a"up-down-up-down"four alternate cycles.Mann-Kendall test analysis results show that:during year of 1960 to 1972,and after year 2012,the Yuanyangchi reservoir inflow is strongly influenced by natural factors;and in the period from 1973 to 2012,Yuanyangchi reservoir inflow is mainly affected by human activities.
作者
李胜双
崔滕科
俞定海
祁文燕
陈建龙
LI Sheng-shuang;CUI Teng-ke;YU Ding-hai;QI Wen yan;CHEN Jianlong(College of Earth and Environmental Sciences Lanzhou Univ ersity,L anz hou 730000,China;Lanzhou Hydrogy and Water Resources Surveys,Lanz hou 730000,China;Jinta County Water Authority,Jiwquan 735300,China)
出处
《南水北调与水利科技》
CSCD
北大核心
2017年第A02期6-10,共5页
South-to-North Water Transfers and Water Science & Technology
基金
中国科学院内陆河流域生态水文重点实验室开放基金项目"黑河流域地表水与地下水转化机制及过程研究"
