| 变化环境下半干旱草原流域径流变化特征及其影响因子定量分析 |
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| 引用本文： | 于婵,王威娜,高瑞忠,刘廷玺,白勇,王喜喜.变化环境下半干旱草原流域径流变化特征及其影响因子定量分析[J].水文,2019,39(1):78-84. |
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| 作者姓名： | 于婵 王威娜 高瑞忠 刘廷玺 白勇 王喜喜 |
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| 作者单位： | 内蒙古自治区水文总局;内蒙古农业大学水利与土木工程学院;美国欧道明大学 |
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| 基金项目： | 内蒙古自然科学基金项目(2018MS05006)；国家自然科学基金项目(51469019)；内蒙古科技计划项目(201701025)； |
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| 摘 要： | 地表水文过程在气候波动和人类活动的作用下发生了不可忽视的变化,这种变化对于内蒙古半干旱草原流域来说更为显著。采用改进的M-K趋势检验法、双累积曲线法、累积距平法和小波变换法对典型半干旱草原流域——锡林河流域1963～2015年径流序列的变化特征进行了剖析,并以社会经济指标量化流域内人类活动影响及细化降水特征因素,运用统计检验和主成分分析进行了变化环境下流域径流主要影响因素的定量分析。结果表明,锡林河流域径流量在水文年、季尺度呈现显著(p0.05)减少趋势;流域径流的突变年份为1998年,在其前后影响径流变化的主导因素发生变化,1998年以后径流受到人类活动和气候变化的双重影响;水文年和枯水季径流序列均存在6年、25年左右的周期,而丰水季径流不存在显著周期变化;尽管气候因素中的降水、蒸发、相对湿度及所有人类活动因素与径流显著相关而影响径流,但其中人类活动为径流变化的主导因素。
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| 关 键 词： | 径流 变化特征 影响因子 定量分析 半干旱草原流域 锡林河流域 |
| 收稿时间： | 2017/10/26 0:00:00 |
Variation Characteristics of Runoff and Quantitative Analysis of Its Affected Factors under ChangingEnvironment in Typical Steppe Basin of Semiarid Region |
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| YU Chan,WANG Wein,GAO Ruizhong,LIU Tingxi,BAI Yong,WANG Xixi.Variation Characteristics of Runoff and Quantitative Analysis of Its Affected Factors under ChangingEnvironment in Typical Steppe Basin of Semiarid Region[J].Hydrology,2019,39(1):78-84. |
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| Authors: | YU Chan WANG Wein GAO Ruizhong LIU Tingxi BAI Yong WANG Xixi |
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| Institution: | 1. The Hydrological Bureau of Inner Mongolia Autonomous Region, Hohhot 010018, China; 2. College of Water Conservancy andCivil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China; 3. Old Dominion University, Norfolk 23529, USA |
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| Abstract: | The climate fluctuation and human activities have significant effects on the changes of surface hydrological processes inthe basin, especially for the semiarid steppe basin. This paper chosen the Xilin River basin to analyze the variation characteristicsof its runoff series from 1963 to 2015 by using the improved M-K trend test method, the double accumulation curve method, thecumulative anomaly method and the wavelet transform method. The main influencing factors were analyzed by the statisticalcorrelation test and the principal component analysis at hydrological year and seasonal scale. The results show that the runoffdecreased significantly at all time scale in the Xilin River basin in the past years; the mutation year of it was in 1998, and thedominant factors affecting runoff were changed after that year; the cycles of the hydrological year and dry season runoff were 6 and25 years while there were no significant cycle changes in the wet season runoff. The factors like precipitation, evaporation, relativehumidity, and human activities have significant impacts on runoff, but the human activities are the dominant ones. |
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| Keywords: | runoff variation characteristics affecting factors quantitative analysis semi-arid steppe basin the Xilin River basin |
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