Characterization of the Recharge-Storage-Runoff Process of the Yangtze River Source Region under Climate Change
Characterization of the Recharge-Storage-Runoff Process of the Yangtze River Source Region under Climate Change
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气候变化下长江源区补给-蓄水-径流过程特征
DOI：
10.3390/w12071940
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发表时间：
2020-07
期刊：
影响因子：
3.4
通讯作者：
Ma Zhongtian
中科院分区：
文献类型：
--
作者：
Du Haochun;Fok Hok Sum;Chen Yutong;Ma Zhongtian
蓄水量和径流量是流域的两个基本地表水文变量。最近，借助卫星重力测量，研究重点集中在流域的蓄水径流 (S-R) 滞后关系及其解释上。然而，尚未对从补给到径流的水文过程进行完整的分析。位于青藏高原东北部的长江源区（YRSR）的S-R滞回关系也尚未被探索。本研究旨在利用重力推导的陆地水储量 (TWS)、卫星推导和测量的降水、陆地表面模拟和测量的蒸散量以及 2003 年至 2012 年测量的径流数据来调查该流域的补给-储存-径流关系。我们发现，S-R关系的Pearson相关系数（PCC）为0.7070，此外每年径流峰值早于蓄水峰值。这一发现使我们能够利用上述数据根据水平衡方程进一步计算等效径流，同时与实测径流时间序列进行比较。将全球土地数据同化系统 (GLDAS) 导出的（仪表导出的）当量径流与实测径流进行比较，结果显示 PCC 分别为 0.8992 (0.9402)，表明蓄水量和径流很大程度上受到降水和蒸散补给的控制。这意味着由于 YRSR 的陡峭地形无法以蓄水形式储存水，因此蓄水与径流没有显着相关。还对 2006 年异常储水时间序列进行了调查。我们推测，降雨量偏低可能部分与厄尔尼诺南方涛动事件有关。降雨量少和地下水突然转移可能是2006年异常的原因。
Storage and runoff are the two fundamental surface hydrological variables of a catchment. Research studies have been focused on the storage-runoff (S-R) hysteretic relationship of a catchment and its explanation very recently, thanks to satellite gravimetry. However, a complete analysis of a hydrological process starting from recharge to runoff has not been investigated. The S-R hysteretic relationship of Yangtze River Source Region (YRSR) situated in the northeast Tibetan Plateau is also unexplored. This study aims to investigate the Recharge-Storage-Runoff relationship of this catchment using gravimetrically-derived terrestrial water storage (TWS), satellite-derived and gauged precipitation, land surface modeled and gauged evapotranspiration, and runoff data measured during 2003–2012. We found that the Pearson correlation coefficient (PCC) of S-R relationship is 0.7070, in addition to the fact that the peak of runoff every year comes earlier than that of the storage. This finding enables us to further calculate equivalent runoff based on water balance equation using the above data, while comparing to measured runoff time series. The comparison of Global Land Data Assimilation System (GLDAS)-derived (gauge-derived) equivalent runoff against measured runoff reveals a PCC of 0.8992 (0.9402), respectively, indicating both storage and runoff are largely controlled by the recharge derived from precipitation and evapotranspiration. This implies the storage is not coupled with runoff prominently due to steep topography in YRSR unable to hold the water in the form of storage. Exceptional anomalous water storage time series in 2006 has also been investigated. We speculate that the low rainfall might partly be related to an El Niño Southern Oscillation event. The low rainfall and abrupt groundwater transfer are likely to be the causes of the anomaly in 2006.
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影响因子：
3
作者：
Qian, KaiZhu;Wan, Li;Wang, XuSheng;Lv, JingJing;Liang, SiHai
通讯作者：
Liang, SiHai
影响因子：
3.9
作者：
Zizhan Zhang;B. Chao;Jianli Chen;C. Wilson
通讯作者：
Zizhan Zhang;B. Chao;Jianli Chen;C. Wilson
DOI：
10.5194/hess-2018-38
发表时间：
2018-03
期刊：
Hydrology and Earth System Sciences Discussions
影响因子：
--
作者：
J. Riegger
通讯作者：
J. Riegger
影响因子：
3.2
作者：
K. Beven
通讯作者：
K. Beven
对 1955 年至 2008 年中国青藏高原中部一个小流域的径流和冰川质量平衡进行建模
影响因子：
3.2
作者：
Gao, Hongkai;He, Xiaobo;Pu, Jianchen
通讯作者：
Pu, Jianchen