Seedling response to sulfur, nitrogen, and associated pollutants
Technical Report
·
OSTI ID:7153147
In 1986, the National Acid Precipitation Assessment Program (NAPAP) established the Forest Response Program (FRP) to assess the effects of acidic deposition and associated pollutants on forests. Seedling exposure studies were initiated to determine acute effects of simulated acid deposition, ozone, and sulfur dioxide, and to identify hypothesized mechanisms be which these effects might alter tree condition and hence result in forest decline. From data available as of December 1988, altered post-exposure growth and imbalance in above- and below-ground responses to sulfur dioxide indicated changes in carbon allocation patterns. Simulated acid precipitation reduced frost hardiness of red spruce seedlings at pH 3.0 and led to higher rates of foliar tissue mortality during extreme cold. Loblolly pine showed root and stem growth decreases at ozone levels 80 ppb and higher. Of western conifers, only ponderosa pine showed consistent growth decreases due to ozone.
- Research Organization:
- NSI Technology Services Corp., Corvallis, OR (USA)
- OSTI ID:
- 7153147
- Report Number(s):
- PB-90-148875/XAB
- Country of Publication:
- United States
- Language:
- English
Similar Records
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·
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·
OSTI ID:6232024
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Sat Oct 01 00:00:00 EDT 1994
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·
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Related Subjects
54 ENVIRONMENTAL SCIENCES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACID RAIN
ACIDIFICATION
ATMOSPHERIC PRECIPITATIONS
BIOLOGICAL VARIABILITY
CHALCOGENIDES
CONIFERS
FORESTS
GENETIC VARIABILITY
GROWTH
MORTALITY
NAPAP
OXIDES
OXYGEN COMPOUNDS
OZONE
PH VALUE
PINES
PINOPHYTA
PLANT GROWTH
PLANTS
PRODUCTIVITY
RAIN
SIMULATION
SPRUCES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TOXICITY
TREES
540120* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
560300 -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ACID RAIN
ACIDIFICATION
ATMOSPHERIC PRECIPITATIONS
BIOLOGICAL VARIABILITY
CHALCOGENIDES
CONIFERS
FORESTS
GENETIC VARIABILITY
GROWTH
MORTALITY
NAPAP
OXIDES
OXYGEN COMPOUNDS
OZONE
PH VALUE
PINES
PINOPHYTA
PLANT GROWTH
PLANTS
PRODUCTIVITY
RAIN
SIMULATION
SPRUCES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TOXICITY
TREES