Publications Found: 1230
Seasonal Variation In The Statistics Of Photosynthetically Active Radiation Penetration In An Oak-Hickory Forest
Baldocchi, D., Hutchison, B., Matt, D., McMillen, R.

The seasonal variability in the frequency distribution (FD) and higher order moments (e.g., standard deviation, skewness and kurtosis) of photosynthetically active radiation (PAR) penetration in an oak—hickory forest were examined. In a leafless, wintertime forest the …

Journal: Agricultural And Forest Meteorology, Volume 36 (4): 343-361 (1986). DOI: 10.1016/0168-1923(86)90013-4 Sites: US-WBW

Canopy Radiative Transfer Models For Spherical And Known Leaf Inclination Angle Distributions: A Test In An Oak-Hickory Forest
Baldocchi, D. D., Hutchison, B. A., Matt, D. R., McMillen, R. T.

Journal: The Journal Of Applied Ecology, Volume 22 (2): 539-555 (1985). DOI: 10.2307/2403184 Sites: US-WBW

Solar Radiation Within An Oak—Hickory Forest: An Evaluation Of The Extinction Coefficients For Several Radiation Components During Fully-Leafed And Leafless Periods
Baldocchi, D., Matt, D., Hutchison, B., Mcmillen, R.

Global shortwave, photosynthetically active, net and allwave radiation was measured above, and at several levels within an oak—hickory forest with instruments mounted on a moving tram system. Profiles of radiation flux densities were quantified using extinction coefficients based on the Beer—Bouguer law. Data are reported …

Journal: Agricultural And Forest Meteorology, Volume 32 (3-4): 307-322 (1984). DOI: 10.1016/0168-1923(84)90056-x Sites: US-WBW

Seasonal Variations In The Radiation Regime Within An Oak-Hickory Forest
Baldocchi, D., Hutchison, B., Matt, D., McMillen, R.

Seasonal variations in solar elevation, canopy phenology and leaf pigmentation result in a dynamic variation in the radiation regime within a deciduous forest. Measurements of several insolation components taken within an east Tennessee oak-hickory forest during eight combinations of season and phenological conditions of …

Journal: Agricultural And Forest Meteorology, Volume 33 (2-3): 177-191 (1984). DOI: 10.1016/0168-1923(84)90069-8 Sites: US-WBW

Atmospheric Sulfur Deposition, Neutralization, And Ion Leaching In Two Deciduous Forest Ecosystems
Richter, D. D., Johnson, D. W., Todd, D. E.

In the 1981 water year, bulk precipitation was primarily a solution of dilute H2SO4, and SO42-was the dominant anion in tbroughfall and soil leachates in two eastern Tennessee deciduous forests. Ecosystem inputs of SO42-, which included dry deposition of forest canopies, …

Journal: Journal Of Environment Quality, Volume 12 (2): 263-270 (1983). DOI: 10.2134/jeq1983.00472425001200020023x Sites: US-WBW

Water Budget Of An Eastern Deciduous Forest Stand
Luxmoore, R. J.

Soil water content and soil matric potential were monitored during 2 years at two neighboring ridge-top sites in an oak-hickory stand on a Typic Paleudult forest soil with cherty silt loam texture. Hydraulic gradients and soil water contents showed distinct seasonal variation. Soil water dynamics and water budgets were simulated …

Journal: Soil Science Society Of America Journal, Volume 47 (4): 785-791 (1983). DOI: 10.2136/sssaj1983.03615995004700040034x Sites: US-WBW

Atmospheric Deposition Of Metals To Forest Vegetation
Lindberg, S. E., Harriss, R. C., Turner, R. R.

Atmospheric deposition during the growing season contributes one-third or more of the estimated total flux of lead, zinc, and cadium from the forest canopy to soils beneath an oak stand in the Tennessee Valley but less than 10 percent of the flux of manganese. The ratio of the wet to dry deposition flux to the vegetation during this …

Journal: Science, Volume 215 (4540): 1609-1611 (1982). DOI: 10.1126/science.215.4540.1609 Sites: US-WBW

The Role Of Atmospheric Deposition In An Eastern U.S. Deciduous Forest
Lindberg, S. E., Harriss, R. C.

Atmospheric sources contributed significantly to the annual flux of trace metals and sulfate to the forest floor of Walker Branch Watershed, a forested catchment in the southeastern United States. Atmospheric deposition supplied from 14% (Mn) to≈40% (Zn, …

Journal: Water, Air, And Soil Pollution, Volume 16 (1): 13-31 (1981). DOI: 10.1007/bf01047039 Sites: US-WBW

Hydraulic Properties Of Fullerton Cherty Silt Loam
Luxmoore, R. J., Grizzard, T., Patterson, M. R.

Soil hydraulic properties at eight depths in a Fullerton cherty silt loam (a clayey, kaolinitic, thermic Typic Paleudult) profile were derived from measurements of water content with a calibrated neutron probe and of matric potential with tensiometers during drainage of a flooded 2- by 2- by 3-m deep soil plot. Soil cores taken from …

Journal: Soil Science Society Of America Journal, Volume 45 (4): 692-698 (1981). DOI: 10.2136/sssaj1981.03615995004500040004x Sites: US-WBW

Precipitation Acidity: The Role Of The Forest Canopy In Acid Exchange
Hoffman, W. A., Lindberg, S. E., Turner, R. R.

Individual rain events were sampled above and below the forest canopy in Walker Branch Watershed, Tennessee, from August 1977 to June 1978 for the purpose of analysis of acidity and organic content. Strong acid content correlated with sulfate concentrations. Total acid concentrations were conserved as rain penetrated chestnut oak …

Journal: Journal Of Environment Quality, Volume 9 (1): 95-100 (1980). DOI: 10.2134/jeq1980.00472425000900010022x Sites: US-WBW