干旱区生态环境知识资源中心(Arid): Evaportranspiration studies for protective barriers: FY 1989 status report

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DOI	10.2172/5153420
报告编号	PNL-8033
来源ID	OSTI_ID: 5153420
	Evaportranspiration studies for protective barriers: FY 1989 status report
	Link, S.O.; Thiede, M.E.; Downs, J.L.; Lettau, D.J. (Pacific Northwest Lab., Richland, WA (United States)); Waugh, W.J. (Geotech, Grand Junction, CO (United States))
英文摘要	This document describes the results of technological developments and experiments at the Small Tube Lysimeter Facility. The objective of this research is to develop the capability to predict evapotranspiration in support of studies of water infiltration control for the Hanford Protective Barrier Development Program. Evapotranspiration is the combined loss of water from plants and soil surfaces to the atmosphere. This process must be predictable to adequately model soil water dynamics. We develop a miniature greenhouse (gas exchange chamber), where internal temperature and relative humidity can be controlled. With this device we measured evapotranspiration, transpiration, and carbon dioxide exchange rates from lysimeters with various surface and plant characteristics. We tested the effect on gas exchange rates and sand, gravel, admix, and soil surfaces in lysimeters where, cheat-grass, Bromus tectorum, had been seeded. Results showed that evapotranspiration was unaffected by the surface treatments. Estimated transpiration rates were higher for plants growing in sand compared with rates for plants growing in the admix and soil treatments. Soil evaporation rates were higher in the gravel treatment than in the sand treatment. Future research will entail parameterization of relationships between evapotranspiration, transpiration, soil evaporation, carbon dioxide exchange, and the abiotic and biotic factors that drive these processes for model development.
出版年	1992
报告类型	Technical Report
语种	英语
国家	美国
来源学科分类	12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES ; 42 ENGINEERING ; 54 ENVIRONMENTAL SCIENCES ; GROUND DISPOSAL ; CONTAINMENT SYSTEMS ; HAZARDOUS MATERIALS ; PLANTS ; TRANSPIRATION ; RADIOACTIVE WASTES ; DATA ANALYSIS ; EVAPORATION ; HANFORD RESERVATION ; LYSIMETERS ; PROGRESS REPORT ; SOILS ; TECHNOLOGY ASSESSMENT ; CONTAINMENT ; DOCUMENT TYPES ; ENGINEERED SAFETY SYSTEMS ; MANAGEMENT ; MATERIALS ; MEASURING INSTRUMENTS ; NATIONAL ORGANIZATIONS ; PHASE TRANSFORMATIONS ; RADIOACTIVE MATERIALS ; US DOE ; US ERDA ; US ORGANIZATIONS ; WASTE DISPOSAL ; WASTE MANAGEMENT ; WASTES 052002* -- Nuclear Fuels-- Waste Disposal & Storage ; 420205 -- Engineering-- Transport & Storage Facilities-- (1980-) ; 540210 -- Environment, Terrestrial-- Basic Studies-- (1990-)
URL	http://www.osti.gov/scitech/servlets/purl/5153420
资源类型	科技报告
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/264770
推荐引用方式 GB/T 7714	Link, S.O.,Thiede, M.E.,Downs, J.L.,et al. Evaportranspiration studies for protective barriers: FY 1989 status report,1992.