Chemistry response of two forested watersheds to acid atmospheric deposition
- Oklahoma State Univ., Stillwater (United States)
- Forest Service, Nacogdoches, TX (United States)
- Forest Service, Oxford, MS (United States)
The deposition and chemistry of precipitation were estimated for one year in two forest ecosystems in the South-Central United States. Precipitation, throughfall, litter leachate, and soil leachate were analyzed for a small catchment of pine-hardwoods in southeastern Oklahoma and for a catchment of loblolly pines (Pinus taeda L.) in northern Mississippi. In the pine-hardwood forest, 98 percent of the acid deposition was neutralized, 50 percent in the forest canopy, and 48 percent in the forest floor. In the pine forest, 75 percent of the acid deposition was neutralized, all in the forest floor. The pine-hardwood ecosystem accumulated sulfate, nitrate, and ammonia ions, and lost base cations. During seasons of deficient precipitation, dry deposition appeared to enrich the concentrations of hydrogen, nitrate, sulfate, and ammonia ions in throughfall samples at both locations.
- OSTI ID:
- 6101381
- Journal Information:
- Water Resources Bulletin; (United States), Vol. 26:5; ISSN 0043-1370
- Country of Publication:
- United States
- Language:
- English
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PRODUCTIVITY
MISSISSIPPI
AIR POLLUTION
OKLAHOMA
WATERSHEDS
ACIDIFICATION
ACID RAIN
AMMONIA
CANOPIES
DEPOSITION
ENVIRONMENTAL EFFECTS
ION EXCHANGE
LEACHATES
NITRATES
PINES
SULFATES
THROUGHFALL
ATMOSPHERIC PRECIPITATIONS
CONIFERS
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DISPERSIONS
FEDERAL REGION IV
FEDERAL REGION VI
HYDRIDES
HYDROGEN COMPOUNDS
MIXTURES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NORTH AMERICA
OXYGEN COMPOUNDS
PINOPHYTA
PLANTS
POLLUTION
RAIN
SOLUTIONS
SULFUR COMPOUNDS
TREES
USA
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
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