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Titolo:
Indicator of risk of water contamination by P for Soil Landscape of Canadapolygons
Autore:
Bolinder, MA; Simard, RR; Beauchemin, S; MacDonald, KB;
Indirizzi:
Agr & Agri Food Canada, Soils & Crops Res Ctr, St Foy, PQ G1V 2J3, Canada Agr & Agri Food Canada St Foy PQ Canada G1V 2J3 t Foy, PQ G1V 2J3, Canada Agr & Agri Food Canada, Ontario Land Resource Unit, Greenhouse & Proc Crops Res Ctr, Guelph, ON N1H 3N6, Canada Agr & Agri Food Canada Guelph ON Canada N1H 3N6 uelph, ON N1H 3N6, Canada
Titolo Testata:
CANADIAN JOURNAL OF SOIL SCIENCE
fascicolo: 1, volume: 80, anno: 2000,
pagine: 153 - 163
SICI:
0008-4271(200002)80:1<153:IOROWC>2.0.ZU;2-T
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHOSPHORUS ASSESSMENT-TOOL; SURFACE-WATER; RUNOFF; MANAGEMENT; PHOSPHATE; MOVEMENT; LOSSES;
Keywords:
degree of soil P saturation; soil P index; environmental risk; soil test P;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
44
Recensione:
Indirizzi per estratti:
Indirizzo: Bolinder, MA Agr & Agri Food Canada, Soils & Crops Res Ctr, 2560 HochelagaBlvd, St Foy, PQ G1V 2J3, Canada Agr & Agri Food Canada 2560 Hochelaga Blvd St Foy PQ Canada G1V 2J3
Citazione:
M.A. Bolinder et al., "Indicator of risk of water contamination by P for Soil Landscape of Canadapolygons", CAN J SOIL, 80(1), 2000, pp. 153-163

Abstract

The indicator of risk of water contamination (IROWC) is a component of theAgriculture and Agri-Food Canada Agri-Environmental Indicator project. TheIROWC measures progress in reducing the risk of water contamination from agricultural activities, focusing on N and P. The objective of this study was to propose a methodology for an IROWC-P applicable at the Soil Landscape of Canada (SLC) polygon level (1:1 000 000 map scale) using an indexing approach. The sources of data included Census of Agriculture, SLC and soil survey databases and provincial soil test data. The IROWC-P considers the following site characteristics: soil erosion and potential for overland flow, annual P balance (crop residues, manure and inorganic fertilizer), soil testP (STP) and degree of soil P saturation (DSPS). IROWC-P classifies polygons for their potential risk of P transfer to surface waters according to five vulnerability classes (i.e., very low, low, medium, high and very high). The methodology was tested on a pilot basis for selected SLC polygons in the province of Quebec using 1981 and 1991 census data. Preliminary results indicated that the proposed methodology showed some sensitivity to changes in agricultural practices between 1981 and 1991 and reflected differences inrisk of P contamination from areas of intensive compared to areas of extensive agriculture. The difference between the selected areas was mainly attributed to the STP, DSPS, manure and inorganic fertilizer P polygon characteristics. The temporal variations in the IROWC-P ratings were attributed mainly to the manure and inorganic fertilizer P polygon characteristics.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/12/20 alle ore 20:01:09