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首页> 外文期刊>Nordic hydrology >Response of hydrological processes to permafrost degradation from 1980 to 2009 in the Upper Yellow River Basin, China
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Response of hydrological processes to permafrost degradation from 1980 to 2009 in the Upper Yellow River Basin, China

机译：黄河上游1980-2009年水文过程对多年冻土退化的响应

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摘要

Watersheds in cold regions are undergoing climate warming and permafrost degradation, which result in quantitative shifts in surface water-groundwater interaction. Daily discharge, annual maximum frozen depth (AMFD) of seasonal frozen soil, precipitation and negative degree-day temperature were analyzed to explore changes and correlations of climate, runoff and permafrost in the Upper Yellow River Basin from 1980 to 2009. Plausible permafrost degradation trends were found at two of the stations, but an unsubstantiated trend was found at Huangheyan Station. The winter recession processes slowed down gradually from 1980 to 2009 at three stations but had little relation to AMFD. Meanwhile, the ratio of monthly maximum to minimum discharge reduced significantly. It is clear that permafrost degradation and runoff variations have already occurred in the basin, particularly in zones where the permafrost coverage is above 40%. It is proposed that the variations in the hydrological regimes were caused by permafrost degradation which enlarged infiltration and sub-surface water contribution to winter discharge. The differences of changes in runoff generation and confluence in various regions were thought to be affected by different permafrost coverage and changes because the exchange of groundwater and surface-water mediated by permafrost.
机译：寒冷地区的流域正在经历气候变暖和多年冻土退化，从而导致地表水与地下水相互作用的定量变化。通过分析1980-2009年黄河流域上游地区的每日排放量，季节性冻土的年最大冻结深度（AMFD），降水量和负度-日温度，探讨气候，径流和多年冻土的变化和相关性。可能的多年冻土退化趋势在两个站中发现了这种现象，但在黄河沿站发现了没有事实根据的趋势。从1980年到2009年，三个站点的冬季衰退过程逐渐放缓，但与AMFD无关。同时，每月最大排放量与最小排放量之比显着降低。显然，该盆地已经发生了多年冻土退化和径流变化，特别是在多年冻土覆盖率超过40％的区域。有人认为，水文状况的变化是由多年冻土退化引起的，这加剧了入渗和地下水对冬季排放的贡献。人们认为，由于多年冻土介导的地下水和地表水交换，不同地区的径流产生和汇合变化的差异受多年冻土覆盖和变化的影响。

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  • 来源
    《Nordic hydrology》 |2016年第5期|1014-1024|共11页
  • 作者

    Li Niu; Baisheng Ye; Yongjian Ding; Jing Li; Yinsheng Zhang; Yu Sheng; Guangyang Yue;

  • 作者单位

    State Key Laboratory of Cryospheric Sciences, Cold & Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;

    State Key Laboratory of Cryospheric Sciences, Cold & Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;

    State Key Laboratory of Cryospheric Sciences, Cold & Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;

    State Key Laboratory of Cryospheric Sciences, Cold & Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;

    Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing 100101, China;

    State Key Laboratory of Cryospheric Sciences, Cold & Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;

    State Key Laboratory of Cryospheric Sciences, Cold & Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, Lanzhou 730000, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    China; climate warming; hydrological processes; permafrost; response; Upper Yellow River Basin;

    机译：中国;气候变暖;水文过程;多年冻土;响应;黄河上游流域;

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