Seedling tree responses to nutrient stress under atmospheric CO/sub 2/ enrichment. [Quercus alba; Liriodendron tulipifera; Pinus virginiana]
Conference
·
OSTI ID:5387861
Three species of seedling trees were grown in pots containing low-nutrient soil for periods of up to 40 weeks under a range of atmospheric CO/sub 2/ concentrations. In all cases, total dry weight increased with CO/sub 2/ enrichment, with a greater relative increase in root weight than shoot weight. In an experiment with Pinus virginiana in open-top field chambers, phosphorus and potassium uptake did not increase with an increase in CO/sub 2/ from 365 to 690 ..mu..L/L, even though dry matter gain increased by 37% during the exposure period. In experiments with Quercus alba and Liriodendron tulipifera under controlled environment conditions there were obvious symptoms of nitrogen deficiency and total nitrogen uptake did not increase with CO/sub 2/ enrichment. However, dry weight gain was more than 90% higher at 690 ..mu..L/L CO/sub 2/. The three experiments with CO/sub 2/ enrichment treatments demonstrate that increases in plant dry weight can occur without increased uptake of some nutrients from the low-nutrient soil. A mechanism for these responses may involve increased mobilization of nutrients in association with increased sucrose transport under elevated CO/sub 2/ conditions.
- Research Organization:
- Oak Ridge National Lab., TN (USA). Environmental Sciences Div.
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 5387861
- Report Number(s):
- CONF-860949-1; ON: DE86008243
- Country of Publication:
- United States
- Language:
- English
Similar Records
Nutrient uptake and growth responses of Virginia pine to elevated atmospheric carbon dioxide. [Pisolithus tinctorius, Pinus virginiana Mill]
Dark respiration and carbohydrate status of two forest species grown in elevated carbon dioxide. [Liriodendron tulipifera L. ; Quercus alba L]
Winter season corticular photosynthesis in Cornus florida, Acer rubrum, Quercus alba, and Liriodendron tulipifera
Journal Article
·
· J. Environ. Qual.; (United States)
·
OSTI ID:7022388
Dark respiration and carbohydrate status of two forest species grown in elevated carbon dioxide. [Liriodendron tulipifera L. ; Quercus alba L]
Conference
·
Wed May 01 00:00:00 EDT 1991
· Plant Physiology, Supplement; (United States)
·
OSTI ID:5518342
Winter season corticular photosynthesis in Cornus florida, Acer rubrum, Quercus alba, and Liriodendron tulipifera
Journal Article
·
Sun Nov 30 23:00:00 EST 1980
· For. Sci.; (United States)
·
OSTI ID:6867154
Related Subjects
560303* -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALI METALS
BIOLOGICAL EFFECTS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
DATA
ELEMENTS
EXPERIMENTAL DATA
GROWTH
INFORMATION
METALS
NITROGEN
NONMETALS
NUMERICAL DATA
NUTRIENTS
OXIDES
OXYGEN COMPOUNDS
PHOSPHORUS
PLANT GROWTH
PLANTS
POTASSIUM
TREES
UPTAKE
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
ALKALI METALS
BIOLOGICAL EFFECTS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
DATA
ELEMENTS
EXPERIMENTAL DATA
GROWTH
INFORMATION
METALS
NITROGEN
NONMETALS
NUMERICAL DATA
NUTRIENTS
OXIDES
OXYGEN COMPOUNDS
PHOSPHORUS
PLANT GROWTH
PLANTS
POTASSIUM
TREES
UPTAKE