Transpiration of Conifer Seedlings in Relation to Soil Water Potential
Measurement of the transpiration response of ponderosa pine, lodgepole pine, Douglas-fir, grand fir, and Engelmann spruce seedlings to decreasing soil water potential showed that the transpiration rate of all species began to decline at a soil water potential of -1 to -2 bars, and that the degree of reduction of transpiration rate differed with species. At a soil water potential of -10 bars, the transpiration rate of the pines was only about 12 percent of their maximum rate, while the rate of the firs was 27-37 percent of maximum. The response of the spruce was intermediate. Forest Sci. 20:181-186.
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Document Type: Journal Article
Affiliations: Plant Physiologist, Pacific Northwest Forest and Range Experiment Station, USDA Forest Service, Wenatchee, Washington
Publication date: 1974-06-01
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- Forest Science is a peer-reviewed journal publishing fundamental and applied research that explores all aspects of natural and social sciences as they apply to the function and management of the forested ecosystems of the world. Topics include silviculture, forest management, biometrics, economics, entomology & pathology, fire & fuels management, forest ecology, genetics & tree improvement, geospatial technologies, harvesting & utilization, landscape ecology, operations research, forest policy, physiology, recreation, social sciences, soils & hydrology, and wildlife management.
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