Atmospheric deposits of dissolved inorganic nitrogen in the southwest of France 1This paper is a DGO, UMR-CNRS 5805 contribution, n° 1275. 1

Rimmelin, Peggy; Dumon, Jonathan; Burdloff, Didier; Maneux, Eric

doi:10.1016/s0048-9697(98)00401-x

Cited by 7 publications

(3 citation statements)

References 41 publications

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“…Unlike dry deposition, there is no big gradient from land to sea. The wet deposition flux over the eastern China seas is 0.4–0.6 gN m −2 yr −1 , which is similar to that to the North Sea (0.75 gN m −2 yr −1 ) and the Arcachon Bay in France (0.52 gN m −2 yr −1 ) [ De Leeuw et al , 2003; Rimmelin et al , 1999]. This indicates that atmospheric deposition to the China seas is as important as to the European seas, where input to coastal zones has been of great concern in recent years (the ANICE project, etc.…”

Section: Simulations Of Atmospheric Depositionmentioning

confidence: 90%

Atmospheric deposition of inorganic nitrogen to the eastern China seas and its implications to marine biogeochemistry

Zhang

et al. 2010

J. Geophys. Res.

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[1] Atmospheric deposition of nitrogen to the eastern China seas has been simulated using the MM5/CMAQ model with the 2004 national emission inventory of China. Dry and wet fluxes are 0.05-0.5 and 0.2-0.6 g m −2 yr −1 , respectively, with the wet deposition accounting for 79% of the total. −1 from the mainland, including riverine discharge, industrial wastewater, and domestic wastewater. Deposition of atmospheric ammonium can account for 56% of the external total input, which is 1.1-1.5 times the input from the major rivers to all the eastern China seas. Ammonium deposition to the Yellow Sea accounts for as much as 87% of the total input. The annual total nitrogen deposition can be converted to new primary biological productivity of 100-200 mmol C m −2 yr −1, or 1.1-3.9% of the new productivity in the East China Sea. Our results suggest that atmospheric deposition has important impact on biological productivity in all the eastern China seas.Citation: Zhang, Y., Q. Yu, W. Ma, and L. Chen (2010), Atmospheric deposition of inorganic nitrogen to the eastern China seas and its implications to marine biogeochemistry,

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Section: Simulations Of Atmospheric Depositionmentioning

confidence: 90%

Atmospheric deposition of inorganic nitrogen to the eastern China seas and its implications to marine biogeochemistry

Zhang

et al. 2010

J. Geophys. Res.

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“…Approximately 80% of atmospheric deposition occurred in spring and summer, indicating that large gaseous N losses were highly correlated with intensive fertilization during the growing season, and ammonia volatilization from animal manure induced by high temperature during this period. The annual wet deposition ratio of about 8.1 kg N ha ¡1 in the JRW is fairly higher than 6.23 kg N ha ¡1 in the Chesapeake Bay watershed (Sheeder et al 2002), 3.9-5.2 kg N ha ¡1 in the Delaware Inland Bays (Scudlark et al 2005), and 5.2 kg N ha ¡1 in the southwest France (Rimmelin et al 1999). However, this estimated value is consistent with 7.5 kg N ha ¡1 over rice Weld in Jiangshu porvince in east China (Su et al 2003), but less than the Weld measurement results elsewhere in China, 4-23 kg N ha ¡1 in 16 national experimental sites (Shen 1998(Shen ), 6.3-26.6 kg N ha ¡1 during 1990(Shen -1994 in westnorth China (Li and Li 1999), and 35.57 kg N ha ¡1 over forest in Guangdong province.…”

Section: Sources Of N Inputmentioning

confidence: 93%

Nitrogen sources and exports in an agricultural watershed in Southeast China

et al. 2008

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The nitrogen (N) budget was developed for Jiulong River Watershed (JRW), an agricultural watershed in a warm and humid area of southeast China. Water quality monitoring, Weld surveys, modelling and GIS techniques were applied to estimate N Xux of atmospheric deposition, mineralization, runoV, denitriWcation, and ammonia volatilization. Over the whole watershed, fertilizers, import of animal feeds, biotic Wxation, mineralization and atmospheric deposition contributed 67.1%, 16.5%, 2.1%, 4.9% and 9.5%, respectively, of total N input (129.3 kg N ha ¡1 year ¡1 ). RunoV, sale of production, denitriWcation, and ammonia volatilization contributed 7.3%, 24.4%, 10.5% and 57.8% of total N output (72.9 kg N ha ¡1 year ¡1 ), respectively. The N budget for the JRW suggested that more than 50% of the N input was lost to the environment, and about 14% was discharged as riverine N, which indicated that agricultural and human activities in the watershed substantially impacted the estuary and coastal water quality, and so altered the N biogeochemistry process.

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“…12 Among these nutrients, PO 4 32 is generally known to be the limiting nutrient for phytoplankton production in the eastern Mediterranean, typically having a high N:P ratio (w20:1) near the sea surface. 13,14 Most studies in the western 6,10,[15][16][17] and the eastern 11,18 Mediterranean regions have been directed at the determination of macro-nutrient contents of wet deposition. Particular attention has been given to inorganic nitrogen for its major role in anthropogenic air pollution related to industrial/ agricultural activities or traffic emissions, 19 which are partly responsible for increased acidity of rainwater 20 and contribute to eutrophication in coastal [21][22][23] and/or terrestrial ecosystems.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric wet deposition of soluble macro-nutrients in the Cilician Basin, north-eastern Mediterranean sea

Özsoy

2003

J. Environ. Monit.

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In order to estimate wet deposition atmospheric fluxes of macro-nutrients into the eastern Mediterranean coastal waters, soluble inorganic phosphate (PO4(3-)), nitrate (NO3-) and nitrite (NO2-) concentrations in precipitation (from February 1996 to June 1997) have been measured at a coastal sampling site, Erdemli, Turkey. Water-soluble inorganic PO4(3)-P, a reactive, bioavailable, limiting macro-nutrient in the oligotrophic waters of the eastern Mediterranean was studied with respect to its contribution to biological productivity. Reactive PO4(3-)-P and NO2(-) + NO3(-)-N concentrations were found to be highly variable in rainwater samples. One of the aims of the study was to determine the contribution of dust transport to the soluble macro-nutrient budget of the eastern Mediterranean. No differences were found between the mean reactive P and NO(2-) + NO3(-)-N concentrations of "red rain" and normal rain events. Most likely as a result of low solubility of crustal phosphorus, dust episodes were not found to be important sources of reactive P, in terms of wet deposition. The annual wet deposition fluxes of reactive PO4(3-)-P and NO2(-) + NO3(-)-N into the Cilician Basin were respectively estimated to be 0.010 g P m(-2) per year and 0.23 g N m(-2) per year, which are comparable to the fluxes from land-based sources in the north-eastern Mediterranean. The incorporation of water soluble bioavailable PO4(3-)-P and NO2(-) + NO3(-)-N delivered via atmospheric wet deposition could be responsible for approximately 3.3% (0.40 g C m(-2) per year) and 11.0% (1.31 g C m(-2) per year) respectively, of the mean annual new production in the north-eastern Mediterranean.

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Atmospheric deposits of dissolved inorganic nitrogen in the southwest of France 1This paper is a DGO, UMR-CNRS 5805 contribution, n° 1275. 1

Cited by 7 publications

References 41 publications

Atmospheric deposition of inorganic nitrogen to the eastern China seas and its implications to marine biogeochemistry

Atmospheric deposition of inorganic nitrogen to the eastern China seas and its implications to marine biogeochemistry

Nitrogen sources and exports in an agricultural watershed in Southeast China

Atmospheric wet deposition of soluble macro-nutrients in the Cilician Basin, north-eastern Mediterranean sea

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