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近40a来黄河上游径流变化特征研究 预览 被引量:36

Study on the Change of Streamflow in the Upper Reaches of the Yellow River in Recent 40 Years
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摘要 利用黄河上游兰州水文站以上流域(及少数邻近站点)26个气象台站的气温、降水及5个水文站的径流逐月资料(1950's-1990's),分析了20世纪后期近40a来黄河上游径流变化特征及其与气候变化的关系.研究表明:黄河上游流域普遍存在升温的变化趋势,尤其是冬季升温明显,同时导致冻土层温度的升高和冻土退化,蒸发加剧,不同程度上影响了流域内径流的变化;流域内降水减少趋势明显.黄河上游自然来水径流量呈显著的减少趋势,1990年以后减小的趋势更加明显;从年内变化分析来看,流域内各水文站春季径流(4~6月)有明显的增大趋势,该时段降水(雪)的明显增加,是导致其春季(4,5,6月 )融雪径流的增加的主要原因;秋、冬季径流的减少,主要是秋季变干的结果;分析兰州站径流的变化特点,主要还受到上游水库调节等人类活动作用的影响. This paper analyzes the long term (1965~1998) data of the monthly temperature and precipitation observed by 26 meteorological stations upstream from Lanzhou Hydrological Station in the Yellow River watershed and the monthly data of streamflow of the Yellow River, measured by 5 hydrological stations, so as to examine the streamflow regime and its change in the upper reaches of the Yellow River in recent 40 years. The results show that the climatic warming occurs universally in the upper reaches of the Yellow River, especially in winter, which has resulted in the temperature increase and shrinkage of frozen earth, sharp increase of evaporation, and the change of streamflow in the watershed; the precipitation in the watershed has been obviously reduced. The natural inflow from the upper reaches of the Yellow River is significantly reduced, especially since 1990. Viewing from the seasonal change of streamflow in the watershed, the streamflow is obviously increased in spring (from April to June) because of the increase of precipitation and the snowmelt runoff in this season; the streamflow is reduced in autumn and winter due to the decrease of precipitation in these seasons. It is considered that the streamflow change of the Yellow River is mainly affected by human activities, such as the streamflow regulation by reservoirs.
作者 韩添丁 叶柏生 丁永建 HAN Tian ding, YE Bai sheng, DING Yong jian (Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China)
出处 《干旱区地理》 CSCD 北大核心 2004年第4期 553-557,共5页 Arid Land Geography
基金 中国科学院引进国外杰出人才基金,国家自然科学基金,国家自然科学基金
关键词 黄河上游 径流变化 降水 水文站 气象台站 特征研究 融雪径流 春季 冬季 冻土退化 upper reaches of the Yellow River trend streamflow change air temperature precipitation.
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  • 1Daqing Yang, Douglas L. Kane, Larry D. Hinzman, et al .Siberian Lena river hydrologic regime and recent change , J. Geophys. Res., 2002. 107(D23), 4694. 被引量:1

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