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冰川冻土 ›› 2013, Vol. 35 ›› Issue (4): 920-928.doi: 10.7522/j.issn.1000-0240.2013.0104

• 寒旱区水文水资源 • 上一篇    下一篇

黄河源区气候向暖湿转变的观测事实及其水文响应

蓝永超1,2, 鲁承阳3, 喇承芳3, 沈永平2, 金会军2, 宋洁3, 文军2, 刘金鹏2   

  1. 1. 中国科学院 内陆河流域生态水文重点实验室, 甘肃 兰州 730000;
    2. 中国科学院 寒区旱区环境与工程研究所, 甘肃 兰州 730000;
    3. 黄河水利委员会 上游水文水资源局, 甘肃 兰州 730030
  • 收稿日期:2012-12-09 修回日期:2013-03-12 出版日期:2013-08-25 发布日期:2013-09-11
  • 作者简介:蓝永超(1957-),男,四川资阳人,研究员,1982年毕业于四川大学,现主要从事气候变化和水文水资源等方面的研究.E-mail:lyc@lzb.ac.cn
  • 基金资助:
    中国科学院重点部署项目(Y322G73001);国家自然科学基金重大研究计划项目(91225302);国家自然科学基金项目(41240002;91225301)资助

The Fact of Climate Shift to Warm-Humid in the Source Regions of the Yellow River and Its Hydrologic Response

LAN Yong-chao1,2, LU Cheng-yang3, LA Cheng-fang3, SHEN Yong-ping2, JIN Hui-jun2, SONG Jie3, WEN Jun2, LIU Jin-peng2   

  1. 1. Key Laboratory of Ecohydrology of Inland River Basin, Chinese Academy of Sciences, Lanzhou Gansu 730000, China;
    2. Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou Gansu 730000, China;
    3. Hydrology and Water Resources Bureau of the Upper Reaches of the Yellow River, Yellow River Conservancy Commission, Lanzhou Gansu 730030, China
  • Received:2012-12-09 Revised:2013-03-12 Online:2013-08-25 Published:2013-09-11

摘要: 基于黄河河源区干流各水文站和有关气象站、雨量站的气温、降水与径流观测资料, 分析了该区域的气候变化特征与趋势及其水文响应. 结果表明: 在全球变暖的大背景下, 自20世纪80年代后期开始西北地区西部新疆、甘肃河西走廊西部等地降水量显著增加、气候明显由"暖干"转向"暖湿"后, 到21世纪初的年代中期后黄河源区降水量亦出现明显的增长, 气候明显转向暖湿. 最新的观测数据显示, 2005年以来河源区平均年降水量已连续多年超过多年均值进入一个多雨期, 河源区各断面来水量也于2008年后连续多年超过多年均值, 进入一个连续丰水段, 并于2012年达到了自1989年以后20余年来的最大值. 这种变化的前景如何, 目前尚不能确定, 尚需对未来河源区气候在时间与空间上变化的速度和程度进一步观察和分析. 根据对与该区域气候关系密切的东亚季风活动的研究成果以及对河源区气候与径流变化的观测事实及趋势推测, 未来黄河源区气候向暖湿的转化在时间尺度上年代际的可能性较大.

关键词: 全球变暖, 黄河源区, 气候转型, 水文断面

Abstract: The changing characteristics and trends of regional climate in the source regions of the Yellow River and the response of runoff to climate change are analyzed based on the observational data of air temperature, precipitation and runoff at some hydrologic stations and precipitation stations, as well as some weather stations. The results show that after a strong climate shift from warm-dry to warm-humid in the west of Northwest China, such as Xinjiang and western Hexi Corridor of Gansu in the late 1980s, a similar climate change has occurred since the mid-2000s in the source regions of the Yellow River, which is located in the east of Northwest China. The background is global warming, and the climate change leads to precipitation and runoff increasing in the regions. The new observational data of precipitation and runoff in the regions display that the average annual precipitation in the source regions of the Yellow River has exceeded the long-time average value in most years since 2004, and then the runoffs through all hydrologic sections on the main stream of the Yellow River have also increased incessantly, exceeding the long-term average, since 2008. However, it is difficult to determine the prospects of climate change. It is necessary to do further research and observation on the rate and extent of the climate change in time and space in the regions. It is very possible that the climate shift from warm-dry to warm-humid in the source regions of the Yellow River in the decadal time scale, which is expected from the analysis and forecast of the activity of the East Asian monsoon and from the observed stream runoff change.

Key words: global warming, source regions of the Yellow River, climate shift, hydrologic section

中图分类号: 

  • P339