DOI: 10.1007/s10533-014-9957-2
Scopus记录号: 2-s2.0-84900814601
论文题名: Impact of changing atmospheric deposition chemistry on carbon and nutrient loading to Ganga River: Integrating land-atmosphere-water components to uncover cross-domain carbon linkages
作者: Pandey J. ; Pandey U. ; Singh A.V.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 119, 期: 2018-01-03 起始页码: 179
结束页码: 198
语种: 英语
英文关键词: Atmospheric deposition
; Climate change
; Dissolved organic carbon
; Ganges basin
; Integrated river basin management
; Nutrients
; Runoff
Scopus关键词: atmospheric deposition
; basin management
; carbon flux
; climate change
; dissolved organic carbon
; nutrient cycling
; runoff
; Ganges Basin
; Ganges River
; India
; Uttar Pradesh
; Varanasi
英文摘要: Terrestrial contribution of dissolved organic carbon (DOC) to riverine carbon transport remains relatively uncertain despite recent research highlighting its importance. Here we present data on changing state of atmosphere-land-water transfer and associated shift in DOC build-up in Ganga River (India) for a period of 6 years (March, 2007-February, 2013). Although the N:P stoichiometry of atmospheric deposition (AD) showed a declining trend, there was over 1.4 to 1.6-fold increase in AD-NO3 -, 1.5 to 1.8-fold increase in AD-OC and, over 1.5 to 2.2-fold increase in AD-NH4 + and AD-PO4 3- input over time. Water soluble organic carbon and microbial activity in sub-catchments and, DOC and nutrient concentrations in runoff increased consistently over time along the gradient of AD-input. We found a variable but strong linkage between atmospheric deposition and hydrological control of terrestrial carbon and nutrient input to the river. The results showed that the increasing input of AD-nutrients enhance primary production whereas, such input in sub-catchment enhance DOC in runoff and, the coupled effect of these favor DOC build-up in Ganga River at Varanasi. The study that forms the first report establishing trans-boundary drivers of DOC in Ganga River suggests that future climate model should consider large scale inter-regional time series data on changing atmosphere-land-water transfer and associated shift in carbon balance of major rivers for more accurately predicting cross-domain carbon linkages and planning for integrated river basin management. © 2014 Springer International Publishing Switzerland. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83607
Appears in Collections: 气候减缓与适应 气候变化事实与影响
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作者单位: Environmental Science Division, Centre of Advanced Study in Botany, Banaras Hindu University, Varanasi, 221005, India; Department of Botany, Mahatma Gandhi Kashividyapith University, Varanasi, 221002, India
Recommended Citation:
Pandey J.,Pandey U.,Singh A.V.. Impact of changing atmospheric deposition chemistry on carbon and nutrient loading to Ganga River: Integrating land-atmosphere-water components to uncover cross-domain carbon linkages[J]. Biogeochemistry,2014-01-01,119(2018-01-03)