| 黑河流域中、西部水系近50年来气温 降水 径流变化特征 |
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| 引用本文： | 李常斌,李文艳,王雄师,杨文瑾,杨致远.黑河流域中、西部水系近50年来气温 降水 径流变化特征[J].兰州大学学报(自然科学版),2011(4). |
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| 作者姓名： | 李常斌 李文艳 王雄师 杨文瑾 杨致远 |
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| 作者单位： | 兰州大学西部环境与气候变化研究院;兰州大学资源环境学院;甘肃省水利水电勘测设计研究院;甘肃省城乡规划设计研究院; |
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| 基金项目： | 国家重点基础研究发展计划(973计划)项目(2009CB421306); 国家创新研究群体科学基金项目(41021091) |
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| 摘 要： | 采用Mann-Kendall非参数检验方法统计分析黑河流域中、西部水系气温、降水及出山径流序列变化特征,并初步讨论了降水、径流发生变化的可能原因.黑河流域中、西部水系气温在20世纪60-70年代总体表现为下降趋势,80年代气温开始波动升高,气温显著升高则主要发生在2000年以来.研究区山区年降水量大于平原的,各站年降水量均呈现平、枯、丰交替的特点,总体上呈微弱增加趋势,增幅不显著.出山径流量在年代尺度上呈现缓慢下降的趋势,洪水和丰乐两条河流的年出山径流量存在突变点,位于1960前后.2000年前后,三河径流量微弱上扬后,继续开始减少趋势,讨赖河稍迟于其余2条较小的河流.
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| 关 键 词： | 气温 降水 出山径流 Mann-Kendall方法 黑河流域 |
Characteristic changes in air temperature, precipitation and mountain runoff in the past 50 years in the middle and western reaches of Heihe river basin |
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| LI Chang-bin ,LI Wen-yan ,WANG Xiong-shi ,YANG Wen-jin ,YANG Zhi-yuan .Research Institute of Arid Environment & Climate Change,Lanzhou University,Lanzhou ,China .School of Resources , Environmental Sciences,China.Characteristic changes in air temperature, precipitation and mountain runoff in the past 50 years in the middle and western reaches of Heihe river basin[J].Journal of Lanzhou University(Natural Science),2011(4). |
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| Authors: | LI Chang-bin LI Wen-yan WANG Xiong-shi YANG Wen-jin YANG Zhi-yuan Research Institute of Arid Environment & Climate Change Lanzhou University Lanzhou China School of Resources Environmental Sciences China |
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| Institution: | LI Chang-bin 1,LI Wen-yan 1,2,WANG Xiong-shi 3,YANG Wen-jin 1,YANG Zhi-yuan 4 1.Research Institute of Arid Environment & Climate Change,Lanzhou University,Lanzhou 730000,China 2.School of Resources and Environmental Sciences,China 3.Institute of Survey and Design for Hydro-engineering in Gansu Province,China 4.Institute of Urban Planning and Design in Gansu Province,China |
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| Abstract: | The nonparametric statistic method of Mann-Kendall was adopted to analyze the trend and char-acteristic changes in air temperature,precipitation and mountain runoff in the middle and western reaches of Heihe river basin,based on which,possible reasons for the hydrometerological changes in the study area were also discussed.Mann-Kendall statistics resulted in an overall decline of air temperature from 1960-1970 and an obvious increase after that.Especially,the upgoing trend of air temperature turned to be st... |
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| Keywords: | air temperature precipitation mountain runoff Mann-Kendall method Heihe river basin |
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