Effects of atmosphere CO[sub 2] enrichment on regrowth of sour orange trees (Citrus aurantium; rutaceae) after coppicing

Journal Article · Fri Jul 01 04:00:00 EDT 1994 · American Journal of Botany; (United States)

DOI:https://doi.org/10.2307/2445765· OSTI ID:6694629

Idso, S B; Kimball, B A ^[1]

---

1. Water Conservation Lab., Phoenix, AZ (United States)

Sixteen sour orange tree (Citrus aurantium L.) seedlings were grown out-of-doors at Phoenix, Arizona, in eight clear-plastic-wall open-top enclosures maintained at four different atmospheric CO[sub 2] concentrations for a period of 2 years. Over the last year of this period, the trees were coppiced five times. The amount of dry matter harvested at each of these cuttings was a linear function of the atmospheric CO[sub 2] concentration to which the trees were exposed. For a 75% increase in atmospheric CO[sub 2] from 400 to 700 microliter per liter ([mu]L liter[sup [minus]1]), total aboveground biomass rose, in the mean, by a factor of 3.19; while for a 400 to 800 [mu]L liter[sup [minus]1] doubling of the air's CO[sub 2] content, it rose by a factor of 3.92. The relative summer (mean air temperature of 32.8 C) response to CO[sub 2] was about 20% greater than the relative winter (mean air temperature of 16.4 C) response. 27 refs., 2 figs., 1 tab.

• DOE Contract Number: AI05-88ER69014
• OSTI ID: 6694629
• Journal Information: American Journal of Botany; (United States), Journal Name: American Journal of Botany; (United States) Vol. 81:7; ISSN 0002-9122; ISSN AJBOAA
• Country of Publication: United States
• Language: English

Related Subjects

560300* -- Chemicals Metabolism & Toxicology
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
BIOLOGICAL EFFECTS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CITRUS
ECOLOGICAL CONCENTRATION
FRUIT TREES
GROWTH
MAGNOLIOPHYTA
MAGNOLIOPSIDA
OXIDES
OXYGEN COMPOUNDS
PLANT GROWTH
PLANTS
TREES