Groundwater Depletion in the West Liaohe River Basin, China and Its Implications Revealed by GRACE and In Situ Measurements
Groundwater Depletion in the West Liaohe River Basin, China and Its Implications Revealed by GRACE and In Situ Measurements
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GRACE 和现场测量揭示的中国西辽河流域地下水枯竭及其影响
作者：
Yulong Zhong;Min Zhong;Wei Feng;Zizhan Zhang;Y
西辽河流域是中国最敏感的气候变化地区之一，也是内蒙古自治区重要的粮食生产基地。这一地区的地下水枯竭正成为一个关键问题。本文利用重力恢复与气候试验(GRACE)卫星资料和现场水井观测资料，对地下水储量变化进行了估算，并对地下水储量变化的驱动因素进行了探讨。在2005年至2011年期间，GRACE探测到的WLRB的GWS下降速率为−0.92±0.49千米3/年，与现场观测的估计值(−0.96±0.19千米3/年)一致。这种长期的GWS枯竭归因于本世纪头十年降水的减少和地下水的广泛过度开采。1980年以来的长期地下水位观测和重建的总蓄水量变化与受厄尔尼诺-南方涛动(ENSO)影响较大的年际降水异常具有良好的一致性。一般来说，在厄尔尼诺/拉尼娜期间，WLRB接收的降水较多/较少。1997-1998年有记录以来最强的厄尔尼诺事件之一以及随后的强烈拉尼娜现象使WLRB的气候急剧转变为长达10年的干旱时期，并在1998年后加速了WLRB的地下水枯竭。这项研究论证了综合卫星观测、地面测量和气候学数据对从长期角度解释区域GWS变化的重要性。
The West Liaohe River Basin (WLRB) is one of the most sensitive areas to climate change in China and an important grain production base in the Inner Mongolia Autonomous Region of China. Groundwater depletion in this region is becoming a critical issue. Here, we used the Gravity Recovery and Climate Experiment (GRACE) satellite data and in situ well observations to estimate groundwater storage (GWS) variations and discussed the driving factors of GWS changes in the WLRB. GRACE detects a GWS decline rate of −0.92 ± 0.49 km3/yr in the WLRB during 2005–2011, consistent with the estimate from in situ observations (−0.96 ± 0.19 km3/yr). This long-term GWS depletion is attributed to reduced precipitation and extensive groundwater overexploitation in the 2000s. Long-term groundwater level observations and reconstructed total water storage variations since 1980 show favorable agreement with precipitation anomalies at interannual timescales, both of which are significantly influenced by the El Nino-Southern Oscillation (ENSO). Generally, the WLRB receives more/less precipitation during the El Nino/La Nina periods. One of the strongest El Nino events on record in 1997–1998 and a subsequent strong La Nina drastically transform the climate of WLRB into a decade-long drought period, and accelerate the groundwater depletion in the WLRB after 1998. This study demonstrates the significance of integrating satellite observations, ground-based measurements, and climatological data for interpreting regional GWS changes from a long-term perspective.
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DOI：
10.3390/rs70100686
发表时间：
2015-01
期刊：
Remote. Sens.
影响因子：
--
作者：
R. Xiao;Xiufeng He;Yonglei Zhang;V. Ferreira;Liang Chang
通讯作者：
R. Xiao;Xiufeng He;Yonglei Zhang;V. Ferreira;Liang Chang
GRACE 卫星是否高估了印度西北部含水层的地下水枯竭程度？
影响因子：
4.6
作者：
Long D;Chen X;Scanlon BR;Wada Y;Hong Y;Singh VP;Chen Y;Wang C;Han Z;Yang W
通讯作者：
Yang W
影响因子：
4.6
作者：
Humphrey V;Gudmundsson L;Seneviratne SI
通讯作者：
Seneviratne SI
影响因子：
5.4
作者：
G. Strassberg;B. Scanlon;D. Chambers
通讯作者：
G. Strassberg;B. Scanlon;D. Chambers
GRACE检测华北平原浅层和深层含水层次区域地下水枯竭
影响因子：
5.2
作者：
Huang, Zhiyong;Pan, Yun;Zhao, Wenji
通讯作者：
Zhao, Wenji