Groundwater resource vulnerability and spatial variability of nitrate contamination: Insights from high density tubewell monitoring in a hard rock aquifer

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• 作者：Sriramulu Buvaneshwari^a ; ^b ; ^{buvanasriramulu@gmail.com} ; Jean Riotte^c ; ^b ; M. Sekhar^a ; ^b ; M.S. Mohan Kumar^a ; ^b ; Amit Kumar Sharma^b ; ^e ; Jean Louis Duprey^b ; Stephane Audry^c ; P.R. Giriraja^a ; Yerabham Praveenkumarreddy^b ; Hemanth Moger^b ; Patrick Durand^d ; Jean-Jacques Braun^b ; ^c ; Laurent Ruiz^d ; ^b
• 关键词：Groundwater ; Nitrate pollution ; Agriculture ; Irrigation ; Semi-arid ; India
• 刊名：Science of The Total Environment
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：579
• 期：Complete
• 页码：838-847
• 全文大小：1800 K
• 卷排序：579

文摘

Tube well irrigation induces groundwater depletion in semi-arid areas. An irrigated catchment in India shows high spatial variability of groundwater NO3. Extreme NO3, up to 360 mg/L, is related to areas of severe groundwater depletion. Irrigation with NO3 rich groundwater induces a “hidden” input of N to the crop. Considering it would help optimizing fertilizer and mitigating groundwater quality.