Dynamics of sulfur exchange at the air/forest canopy interface: A review of throughfall inferred deposition rates

Journal Article · Tue Sep 01 00:00:00 EDT 1987 · Global Biogeochemical Cycles; (USA)

DOI:https://doi.org/10.1029/GB001i003p00233· OSTI ID:6943055

Sievering, H ^[1]

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1. Colorado Univ., Denver (USA)

A review of the literature on the throughfall/incident precipitation approach is presented as it relates to the measurement of S uptake by forest canopies during non-precipitation dry periods. This measurement approach has produced valuable data on other-than-wet deposition of total S. The larger S deposition values obtained when using annual-budget calculations versus event-based calculations may be attributed to enhanced deposition during wettened canopy periods or to cloud/fog interception. Substantially greater other-then-wet S deposition values for coniferous versus deciduous forest canopies have been observed. However, there are currently too many assumptions regarding throughfall/incident measurements that have not been tested. Canopy exchange may be from about 15% to as much as 70% of the difference between throughfall and incident S. The contribution of gas and particulate phases to other-than-wet deposition needs to be quantified. Leaching and retention need to be characterized for various types of forest canopies. Thus, the dry or other-than-wet deposition values presented in the throughfall/incident literature are generally of low accuracy. 31 refs., 1 fig., 3 tabs.

• OSTI ID: 6943055
• Journal Information: Global Biogeochemical Cycles; (USA), Vol. 1:3; ISSN 0886-6236
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
ACID RAIN
ENVIRONMENTAL EFFECTS
SULFATES
ECOLOGICAL CONCENTRATION
AIR POLLUTION
CANOPIES
DEPOSITION
FORESTS
LEACHING
PRECIPITATION SCAVENGING
REVIEWS
THROUGHFALL
TREES
UPTAKE
ATMOSPHERIC PRECIPITATIONS
DISSOLUTION
DOCUMENT TYPES
OXYGEN COMPOUNDS
PLANTS
POLLUTION
RAIN
SEPARATION PROCESSES
SULFUR COMPOUNDS
540120* - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)
540220 - Environment
Terrestrial- Chemicals Monitoring & Transport- (1990-)