Modeling the impact of land use changes on runoff and sediment yield in the Le Sueur watershed, Minnesota using GeoWEPP

Auteur(s) et Affiliation(s)

MAALIM, F.K.

Dep. of Earth and Environment, Florida international Univ., Etats-Unis

MELESSE, A.M.

Dep. of Earth and Environment, Florida international Univ., Etats-Unis

BELMONT, P.

Dep. of Watershed Sciences, Utah Sate Univ., Logan, Etats-Unis

GRAN, K.B.

Dep. of Geological Sciences, Univ. of Minnesota, Duluth, Etats-Unis

Description :
To develop a sediment budget for the Le Sueur River, this study implemented a process-based watershed hydrology and upland erosion model, Water Erosion Prediction Project (WEPP), to simulate hydrology and sediment dynamics in several land-use/land-cover scenarios. The Geo-spatial interface for WEPP (GeoWEPP) was used to characterize upland overland flow elements based on their land use/land cover, soil, and slope profiles. These characteristics were used as inputs for the WEPP model to estimate runoff fluxes, soil loss rates, and sediment delivery ratio (SDR) for 3 environmental scenarios : 1) current land-use/land-cover with agricultural lands under fall mulch till management; 2) current land-use/land-cover with agricultural lands under no till management; 3) pre-settlement land-use/land-cover. Over a simulated 30-year period (1979–2008), the runoff depth, soil loss rate and SDR were estimated for each scenario and discussed.

Type de document :
Article de périodique

Source :
Catena (Giessen), issn : 0341-8162, 2013, vol. 107, p. 35-45, nombre de pages : 11, Références bibliographiques : 1 p.

Date :
2013

Editeur :
Pays édition : Allemagne, Cremlingen-Destedt, Catena

Langue :
Anglais