Publication Date

1985

Location

Kyoto Japan

Description

Field studies of soil and plant water potential as related to transpiration losses of water from grass and shrub species were conducted through a wet and dry season on a wooded grassland in Kenya. Seasonal patterns of leaf conductance and transpiration indicated that deep rooted shrubs utilized more water per unit leaf area than did the dominant grass Digitaria macroblephara. Several shrub species continued to transpire water throughout most of the dry season. Shrub use of deep soil water resources, combined with selective grazing of grasses, may help explain why shrub encroachment into grasslands within Kenya has become a major problem on many rangelands.

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Soil and Plant Water Relations on a Wooded Grassland in Kenya

Kyoto Japan

Field studies of soil and plant water potential as related to transpiration losses of water from grass and shrub species were conducted through a wet and dry season on a wooded grassland in Kenya. Seasonal patterns of leaf conductance and transpiration indicated that deep rooted shrubs utilized more water per unit leaf area than did the dominant grass Digitaria macroblephara. Several shrub species continued to transpire water throughout most of the dry season. Shrub use of deep soil water resources, combined with selective grazing of grasses, may help explain why shrub encroachment into grasslands within Kenya has become a major problem on many rangelands.