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Indicator of risk of water contamination by phosphorus from Canadian agricultural land.

Van Bochove, Eric; Thériault, Georges; Dechmi, Farida; Rousseau, Alain N.; Quilbé, Renaud; Leclerc, Marie-Line; Goussard, Nadia (2006). Indicator of risk of water contamination by phosphorus from Canadian agricultural land. Water Science and Technology , vol. 53 , nº 2. p. 303-310. DOI: 10.2166/wst.2006.064.

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Résumé

The indicator of risk of water contamination by phosphorus (IROWC_P) is designed to estimate where the risk of water P contamination by agriculture is high, and how this risk is changing over time based on the five-year period of data Census frequency. Firstly developed for the province of Quebec (2000), this paper presents an improved version of IROWC_P (intended to be released in 2008), which will be extended to all watersheds and Soil Landscape of Canada (SLC) polygons (scale 1:1, 000, 000) with more than 5% of agriculture. There are three objectives: (i) create a soil phosphorus saturation database for dominant and subdominant soil series of SLC polygons – the soil P saturation values are estimated by the ratio of soil test P to soil P sorption capacity; (ii) calculate an annual P balance considering crop residue P, manure P, and inorganic fertilizer P – agricultural and manure management practices will also be considered; and (iii) develop a transport-hydrology component including P transport estimation by runoff mechanisms (water balance factor, topographic index) and soil erosion, and the area connectivity to water (artificial drainage, soil macropores, and surface water bodies).

Type de document: Article
Mots-clés libres: agriculture; hydrology; indicator; phosphorus; soil; water contamination
Centre: Centre Eau Terre Environnement
Date de dépôt: 08 janv. 2021 19:52
Dernière modification: 08 janv. 2021 19:52
URI: http://espace.inrs.ca/id/eprint/10931

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