A 28-Meter Douglas-fir in a Weighing Lysimeter
Abstract:A 3.7 m diameter by 1.2 m deep soil container was constructed around the root ball of a 28 m Douglas-fir tree in a naturally regenerated stand. The container, soil, and tree weighed 28,900 kg. The weighing mechanism, consisting of 165.6 m of 6.35 cm butyl rubber tubing filled with water connected to a stand pipe, was placed under the soil container. Weight changes are detected by measuring the differential pressure between the active standpipe and a dummy standpipe. The sensitivity of the system is 630 g, equivalent to 0.06 mm of H2O. Forest Sci. 19:256-261.
Document Type: Journal Article
Affiliations: Research Associate, Duke University
Publication date: 1973-12-01
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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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