Sunday, August 8, 2010

Quantification and Simulation of Grazing Impacts on Soil Water in Boreal Grasslands - Donkor - 2006 - Journal of Agronomy and Crop Science - Wiley Online Library

Quantification and Simulation of Grazing Impacts on Soil Water in Boreal Grasslands - Donkor - 2006 - Journal of Agronomy and Crop Science - Wiley Online Library: "We conducted a 2-year study in central Alberta to quantify and simulate the soil water status of boreal grasslands under three grazing systems using wapiti (Cervus elaphus Canadensis), viz. (1) ungrazed control (UNG), (2) high intensity [4.16 animal unit month per ha (AUM) ha−1 ] short-duration grazing (SDG) and (3) moderate intensity (2.08 AUM ha−1) continuous grazing (CG). Soil water was measured from May 1997 to September 1998 to a depth of 15�cm. Total annual precipitation in 1997 and 1998 was 494 and 429�mm respectively. In both years grazing treatments reduced soil water. Soil water content under SDG was significantly (P�<�0.05) lower than CG. Simulation of soil water on each grazing system was conducted using PASTURE, a simple compartmental system dynamics model."

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