Rivers_II_-_Lect12_S10

Rivers_II_-_Lect12_S10 - Rivers II: Components of River...

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1 Rivers II: Components of River Water II Advanced Environmental Geochemistry – Lecture 12 Spring 2010
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2 Fertilizer Consumption by Nutrient
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3 Nitrogen and Phosphorous Loads in Selected Rivers COUNTRY RIVER NITROGEN, in mg/l (NO 3 + NO 2 ) PHOSPHOROUS, in mg/l (as phosphate, PO 4 3- ) UNITED STATES COLORADO 0.37 NA MISSISSIPPI 1.40 NA POTOMAC 1.10 NA CANADA MacKENZIE 0.06 0.04 a ST. LAWRENCE 0.11 0.02 a NETHERLANDS IJSSEL 4.21 0.36 b LEK 4.02 0.35 b BELGIUM ESPIERRE 3.10 c 49.00 a SCHELDT 3.30-3.60 c 0.70-0.80 a a Total phosphorous b Soluble orthophosphate as PO 4 c NO 3 only
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4 Phosphorous Inputs, Outputs, and Recycling Phosphorous Input to Land - Sources Flux in Tg P/Yr % Total Input Flux % Anthropogenic Rock Weathering 14.0 52.3 49.3 Phosphate Mining 12.6 47.0 100 Deposition form atmosphere 0.2 0.8 100
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Phosphorous Inputs, Outputs, and Recycling Phosphorous output from Land Flux in Tg P/Yr % Total Output Flux % Anthropogenic Dissolved Inorganic PO 4 0.8 4 50 Dissolved Organic phosphorous
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This note was uploaded on 05/04/2011 for the course GLY 6246 taught by Professor Warburton during the Spring '11 term at FAU.

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Rivers_II_-_Lect12_S10 - Rivers II: Components of River...

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