Soil nitrogen and ozone effects on growth, physiology, and nutrition of loblolly pine and yellow-poplar seedlings

Technical Report · Thu Jun 01 04:00:00 EDT 1989

OSTI ID:5859825

Tjoelker, M G; Luxmoore, R J; Schwarz, O J

The effects of soil nitrogen level and chronic ozone (O /sub 3/) stress on carbon and nutrient economy were investigated in loblolly pine (Pinus taeda L.) and yellow-poplar (Liriodendron tulipifera L). The objectives of the study were: (1) to compare the growth and biomass partitioning in seedlings in response to varied low-nitrogen forest soil treatments in combination with chronic ozone levels over one growing season and (2) to investigate seedling physiological responses, including water use efficiency (WUE), photosynthesis, fine root and leaf nitrate reductase activity (NRA), nutrient concentration, nutrient uptake, and nutrient use efficiency (NUE). 135 refs., 12 figs., 16 tabs.

• Research Organization: Oak Ridge National Lab., TN (USA)
• DOE Contract Number: AC05-84OR21400
• OSTI ID: 5859825
• Report Number(s): ORNL/TM-11065; ON: DE89015679
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
BIOLOGICAL EFFECTS
BIOLOGICAL STRESS
BIOMASS
CHEMICAL REACTIONS
CONIFERS
ENERGY SOURCES
FORESTS
GROWTH
MAGNOLIOPHYTA
MAGNOLIOPSIDA
NITROGEN COMPOUNDS
OZONE
PHOTOCHEMICAL REACTIONS
PHOTOSYNTHESIS
PHYSIOLOGY
PINES
PINOPHYTA
PLANT GROWTH
PLANTS
POPLARS
RENEWABLE ENERGY SOURCES
SEEDLINGS
SOILS
SYNTHESIS
TREES
WATER USE