ISWC OpenIR  > 水保所知识产出(1956---)
皇甫川流域1955-2013年水沙变化趋势与周期特征
魏艳红1; 焦菊英1,2
2017
Source Publication水土保持研究
Volume24Issue:3Pages:1-6
Abstract

:为揭示黄河流域重要的产沙支流皇甫川在新时期水沙如何变化,采用Mann-Kendall检验、Pettitt检验及
Morlet小波变换,分析了皇甫川流域1955—2013年水沙变化的趋势、突变和周期变化特征。结果表明:在99%显著
性水平下,皇甫川流域的年径流量和输沙量均呈显著减少趋势,且径流量的减少大于输沙量的减少,进入21世纪以
来,水沙年际变异更为显著;径流量、输沙量序列一级突变点均发生在1984年,二级突变点有所不同,年输沙量序列突变时间
(2003年)晚于年径流量序列突变的时间(1998年);水沙演化过程中均存在4个尺度的周期变化,分别为22~32,13~21,7~
12,3~6a和23~32,13~22,7~12,3~6a;在径流量和输沙量整体减少的趋势下,2011—2020年径流量将处于相对偏丰阶
段,而输沙量在2013—2018年将处于相对偏多沙时期。研究表明,皇甫川流域径流量和输沙量的减少是气候的暖干化
和渐强的人类活动综合作用的结果,而大规模的水土保持措施是水沙减少的重要影响因素。

Other Abstract

Abstract:To reveal how streamflow and sediment discharge change in the new period of importance producing
sediment of Huangfuchuan Watershed,the tributary of Yellow River.The Mann-Kendall test,Pettitt′s test
and wavelet transform were applied to detect the trends,abrupt changes and periodical variation of streamflow and
sediment discharge from 1955to 2013in the Huangfuchuan Watershed.The results showed that significant
reductions in both streamflow(Z=-5.01)and sediment discharge(Z=-4.55)were detected with a significance
level of 99%,as well as the reduction of streamflow(β=-0.03)was greater than sediment discharge
(β=-0.01).Especially in the 21st century,the interannual variability of streamflow and sediment discharge
was more significant.The first abrupt change points of both annual streamflow and sediment discharge
appeared in 1984,while the second abrupt change points of these were not in the same year,for sediment
discharge in 2003later than streamflow in 1998.The periodic variation of streamflow and sediment discharge
had four scales,there were 22~32years,13~21years,7~12years,3~6years scales and 23~32years,13
~22years,7~12years,3~6years scales.As the amounts of streamflow and sediment discharge reducing
as a whole,the streamflow would be in the wet period in 2011—2020,while the sediment discharge would be in the
high sediment in 2013—2018.The research results showed that the decrease in the streamflow and sediment
discharge in Huangfuchuan Watershed was the result of the combination with warming and drying climate and intensive
human activities.However,a series of large-scale soil and water conservation measures were the vital factors
leading to significant reduction in streamflow and sediment discharge in Huangfuchuan Watershed.

Keyword水沙变化 周期变化 Mann-kendall趋势检验 Pettitt突变检验 Morlet小波变换
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8405
Collection水保所知识产出(1956---)
Affiliation1.中国科学院水利部水土保持研究所
2.西北农林科技大学水土保持研究所
First Author Affilication中国科学院水利部水土保持研究所
Recommended Citation
GB/T 7714
魏艳红,焦菊英. 皇甫川流域1955-2013年水沙变化趋势与周期特征[J]. 水土保持研究,2017,24(3):1-6.
APA 魏艳红,&焦菊英.(2017).皇甫川流域1955-2013年水沙变化趋势与周期特征.水土保持研究,24(3),1-6.
MLA 魏艳红,et al."皇甫川流域1955-2013年水沙变化趋势与周期特征".水土保持研究 24.3(2017):1-6.
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