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Titolo:
Geomatic simulation of soil erosion and sediment transport in small watersheds
Autore:
Duchemin, M; Lachance, M; Morin, G; Lagace, R;
Indirizzi:
Univ Quebec, INRS Eau, St Foy, PQ G1V 4C7, Canada Univ Quebec St Foy PQ Canada G1V 4C7 INRS Eau, St Foy, PQ G1V 4C7, Canada Univ Laval, Dept Sols & Genie Agroalimentaire, St Foy, PQ G1K 7P4, Canada Univ Laval St Foy PQ Canada G1K 7P4 imentaire, St Foy, PQ G1K 7P4, Canada
Titolo Testata:
WATER QUALITY RESEARCH JOURNAL OF CANADA
fascicolo: 3, volume: 36, anno: 2001,
pagine: 435 - 473
SICI:
1201-3080(2001)36:3<435:GSOSEA>2.0.ZU;2-P
Fonte:
ISI
Lingua:
FRE
Soggetto:
NONPOINT-SOURCE POLLUTION; MODEL; RAINFALL; RUNOFF; UNCERTAINTY; EQUATION; UNITS;
Keywords:
simulation; erosion; sediment; watershed; GIS; CEQEROSS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
64
Recensione:
Indirizzi per estratti:
Indirizzo: Duchemin, M Univ Quebec, INRS Eau, 2800 Rue Einstein,CP 7500, St Foy, PQ G1V 4C7, Canada Univ Quebec 2800 Rue Einstein,CP 7500 St Foy PQ Canada G1V 4C7
Citazione:
M. Duchemin et al., "Geomatic simulation of soil erosion and sediment transport in small watersheds", WAT QUAL RE, 36(3), 2001, pp. 435-473

Abstract

Soil erosion at various places of a watershed often comes with an excessive quantity of suspended sediments in the rivers. The indirect evaluation oferosion by the measurement of the suspended sediments transported at the water shed outlet makes it possible to have a good idea of the environmentalimpact of agricultural activities. It turns out, however, that it is essential, from the point of view of the water quality management, to be able toevaluate soil erosion and suspended sediment transport in order to identify problematic zones on watershed. This estimate implies the handling of a considerable sum of information to describe the watershed environment and the use of complex mathematical models to simulate the hydrological and sedimentological processes concerned. The recourse to the data processing modelsof soil erosion and geographical information systems (GIS) is then essential. This article presents the development and the application of a geomaticapproach of simulation, which implies the joint use of the hydrological model CEQUEAU, the erosion model MODEROSS and the geographical information system IDRISI. More precisely this article presents how the software package CEQEROSS was used to predict the hydrosedimentologic behaviour of a small agricultural watershed of Quebec (Canada). The total suspended sedimentary loads simulated at the outlet of the Lennoxville watershed reached 27.5 tonsand 54.1 tons for the periods 1991-92 and 1992-93, respectively. These values are similar to the total sedimentary loads of 30.3 tons and 51.3 tons observed during these corresponding periods. The obtained results show that the episodical nature of the suspended sediment transport at the Lennoxville watershed oulet was well reproduced by CEQEROSS. The geomatic approach suggested is sufficiently user-friendly and reliable to be registered inside an agroenvironmental management tool.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/03/20 alle ore 15:13:19