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Soil moisture storage in mature and replanted sub-humid boreal forest stands

Document Type

Article

Journal/Book Title/Conference

Canadian Journal of Soil Science

Volume

78

Issue

1

First Page

17

Last Page

27

Publication Date

1998

Abstract

Elliott, J. A., Toth, B. M., Granger, R. J. and Pomeroy, J. W. 1998. Soil moisture storage in mature and replanted sub-humid boreal forest stands. Can. J. Soil Sci. 78: 17–27. Soil moisture profiles at two mature forest sites (Pine and Mixed-Wood) and two plantations (1981 Pine and 1992 Mixedwood) in central Saskatchewan were studied in conjunction with soil properties, pre- cipitation, interception and evapotranspiration. Sampling locations within each stand were chosen to highlight differences in soil moisture due to interception, evapotranspiration and soil physical properties.

Soil moisture storage to 1-m depth was greatest on the 92-Plantation where transpiration and interception of precipitation were less than the other sites. Moisture storage in the 81-Plantation was similar to that in the mixed-wood stand. The Pine stand had the lightest textured soils and stored least water to 1-m depth. Variability in moisture storage was also observed within stands and was associated with canopy structure and density, water extraction patterns and mechanical site preparation. In the furrows at the 92- Plantation, wet soils in combination with low infiltration rates and transpiration may have lead to the generation and channelling of rainfall runoff during a major rainfall event.

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