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首页> 外文期刊>Journal of water and climate change >Hydrological trend of Qinghai Lake over the last 60 years: driven by climate variations or human activities?
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Hydrological trend of Qinghai Lake over the last 60 years: driven by climate variations or human activities?

机译：近60年来青海湖的水文趋势是受气候变化还是人类活动驱动？

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摘要

Qinghai Lake, as the largest saline inland lake in China, plays an important role in the surrounding semi-arid ecosystem. In recent years, the lake water level has increased rapidly; however, the driving factors causing water body changes are not fully understood. This study aims to investigate the hydrological processes in Qinghai Lake from 1959 to 2016, and to discuss their possible linkages to climatic change and human activity. The results indicate that both the water level and lake area gradually declined to their minima in 2004, before increasing rapidly. Annual evaporation and total runoff vary widely, but have shown an overall shift from decreasing to increasing trends. The annual average temperature has followed an increasing trend, and annual precipitation has increased rapidly since 2004. Hydrological changes (water level and lake) are positively correlated with runoff inflow into the lake and negatively correlated with evaporation from the lake surface. The water body expansion in recent years can be attributed to the decreasing difference between precipitation/river runoff and evaporation. The total water consumption by human activities has had a limited contribution to the water body changes. We conclude that hydrological changes have depended more on climatic variations than on human activities.
机译：青海湖是中国最大的内陆盐湖，在周围的半干旱生态系统中发挥着重要作用。近年来，湖泊水位迅速增加。但是，引起水体变化的驱动因素尚未完全了解。这项研究旨在调查1959年至2016年青海湖的水文过程，并探讨它们与气候变化和人类活动的可能联系。结果表明，在迅速增加之前，水位和湖泊面积在2004年逐渐降至最低值。年蒸发量和总径流量变化很大，但已显示出从下降趋势到上升趋势的总体转变。自2004年以来，年平均温度呈上升趋势，年降水量迅速增加。水文变化（水位和湖泊）与流入湖泊的径流呈正相关，与湖泊表面的蒸发呈负相关。近年来水体膨胀可归因于降水/河流径流和蒸发之间的差异减小。人类活动所消耗的总水量对水体变化的贡献有限。我们得出的结论是，水文变化更多地取决于气候变化，而不是人类活动。

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  • 来源
    《Journal of water and climate change》 |2019年第3期|524-534|共11页
  • 作者

    Dong Hongmei; Song Yougui; Zhang Maosheng;

  • 作者单位

    Xian Univ Sci & Technol Sch Management 58 Yanta Zhong Rd Xian 710054 Shaanxi Peoples R China;

    Chinese Acad Sci State Key Lab Loess & Quaternary Geol Inst Earth Environm 97 Yanxlang Rd Xian 710061 Shaanxi Peoples R China|Baylor Univ Dept Geosci One Bear Pl 97354 Waco TX 76798 USA;

    Geol Survey China Key Lab Geohazard Loess Area Xian Ctr Geol Survey 438 Youyi East Rd Xian 710054 Shaanxi Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    climate variations; human activities; hydrological change; Qinghai Lake;

    机译：气候变化;人类活动;水文变化青海湖;

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