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	GRACE, GLDAS and measured groundwater data products show water storage loss in Western Jilin, China
	Moiwo J. P. ; Lu W. X. ; Tao F. L.
	2012
关键词	GLDAS GRACE groundwater soil moisture storage depletion Western Jilin hai river-basin northern china land-use system model depletion province recharge impact
英文摘要	Water storage depletion is a worsening hydrological problem that limits agricultural production in especially arid/semi-arid regions across the globe. Quantifying water storage dynamics is critical for developing water resources management strategies that are sustainable and protective of the environment. This study uses GRACE (Gravity Recovery and Climate Experiment), GLDAS (Global Land Data Assimilation System) and measured groundwater data products to quantify water storage in Western Jilin (a proxy for semi-arid wetland ecosystems) for the period from January 2002 to December 2009. Uncertainty/bias analysis shows that the data products have an average error <10% (p<0.05). Comparisons of the storage variables showfavorable agreements at various temporal cycles, with R-2=0.92 and RMSE = 7.43 mm at the average seasonal cycle. There is a narrowing soil moisture storage change, a widening groundwater storage loss, and an overall storage depletion of 0.85 mm/month in the region. There is possible soil-pore collapse, and land subsidence due to storage depletion in the study area. Invariably, storage depletion in this semi-arid region could have negative implications for agriculture, valuable/fragile wetland ecosystems and people's livelihoods. For sustainable restoration and preservation of wetland ecosystems in the region, it is critical to develop water resources management strategies that limit groundwater extraction rate to that of recharge rate.
出处	Water Science and Technology
卷	65
期	9
页	1606-1614
收录类别	SCI
语种	英语
ISSN号	0273-1223
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/30801]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Moiwo J. P.,Lu W. X.,Tao F. L.. GRACE, GLDAS and measured groundwater data products show water storage loss in Western Jilin, China. 2012.

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