Results 251 to 260 of about 1,378,855 (300)

Atmospheric Deposition and Forest Decline

Water, Air, & Soil Pollution, 1986
This paper discusses the economic implications of alternative scientific explanations of observed forest decline. The various explanations can be grouped into two categories. One category posits direct damage to the forest canopy that is reversible. The other category posits indirect damage via soil quality changes that may be irreversible or slow to ...
Thomas D. Crocker, Bruce A. Forster
openaire   +1 more source

Deposition of atmospheric pollutants on forests

Philosophical Transactions of the Royal Society of London. B, Biological Sciences, 1989
Abstract Forests have long been considered as efficient sinks for atmospheric pollutants. The potential for large rates of deposition is provided by the turbulent structure of air above and within forest canopies. Large rates of deposition of pollutant gases, however, are only found for the very reactive gases HNO3, HCl and NH3.
Fowler, D., Cape, J.N., Unsworth, M.H.
openaire   +2 more sources

Deposition of atmospheric ammonia to moorlands

Environmental Pollution, 1992
Micrometeorological methods were applied to measure fluxes of atmospheric ammonia (NH3) to moorlands. Measurements were made in a wide variety of surface conditions and included both Calluna vulgaris (L.) Hull and Eriophorum vaginatum L. dominated sites.
Sutton, M.A., Moncrieff, J B, Fowler, D.
openaire   +3 more sources

Atmospheric Deposition to Forest Ecosystems

2013
Abstract Atmospheric deposition is an important source of macro- and micronutrients to the forest and also the most important channel for input of long-range air pollutants. This chapter describes the methods used for the determination of atmospheric deposition, especially in rain and snow, in forest ecosystems, including samplers for open-field bulk
Karin Hansen, Anne Thimonier, Nicholas Clarke, Jeroen Staelens, Daniel Zlindra, Peter Waldner, Aldo Marchetto   +6 more
openaire   +3 more sources

Atmospheric Nitrogen Deposition

Science, 1997
David A. Wedin and David Tilman (Reports, 6 Dec., p 1720 ) show that increased nitrogen inputs to terrestrial ecosystems might cause smaller increases in the capacity of those ecosystems to store carbon than expected.
Bruce A. Hungate, Thomas E. Jordan, Robert B. Jackson, Bert G. Drake   +3 more
openaire   +1 more source

Atmospheric deposition of35S

Journal of Radioanalytical and Nuclear Chemistry, 1999
The35S content in atmospheric deposition, aerosol and rain water was determined about every 10 days for a year with7Be,32P and some stable elements. Average35S concentrations were 110 mBq·m−2·d−1 for atmospheric deposition, 0.078 mBq·m−3 for aerosol in surface air and 45 mBq·l−1 for rain water.
S. Osaki, Y. Tagawa, T. Chijiiwa, S. Sugihara, Y. Maeda   +4 more
openaire   +1 more source

Atmospheric Pressure Plasma Deposition of Polyfuran

Journal of Macromolecular Science, Part A, 2007
The atmospheric pressure radiofrequency (RF) plasma polymerization of furan was carried out with the objective of synthesizing polyfuran thin film. The structure, compositions and morphology of the plasma deposited polyfuran film were investigated by Fourier transform infrared (FTIR), atomic force microscopy (AFM), ultraviolet‐visible absorption ...
Gok, Aysegul, Oksuz, Lutfi
openaire   +3 more sources

Atmospheric deposition to watersheds in complex terrain

Hydrological Processes, 1997
Single collection stations for wet or bulk deposition are generally inadequate to describe atmospheric inputs to watersheds in complex terrain. Atmospheric deposition is delivered by wet, dry and cloud deposition processes, and these processes are controlled by a wide range of landscape features, including canopy type and structure, topographic ...
GARY M. LOVETT, JONATHAN J. BOWSER, ERIC S. EDGERTON   +2 more
openaire   +1 more source

Decline in atmospheric mercury deposition in London

Journal of Environmental Monitoring, 2009
Bulk atmospheric deposition samples were continuously collected using a standard IVL-type mercury (Hg) bulk deposition collector from January 1999 to December 2005 in order to monitor Hg deposition in London. The volume-weighted annual Hg concentrations in deposition gradually declined from 76.0 ng L(-1) in 1999 to 43.8 ng L(-1) in 2005 ...
Handong, Yang, Alison, Berry, Neil, Rose, Torunn, Berg   +3 more
openaire   +2 more sources

Atmospheric Deposition of Metals to Forest Vegetation

Science, 1982
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.
S E, Lindberg, R C, Harriss, R R, Turner
openaire   +2 more sources