In:
Journal of Environmental Quality, Wiley, Vol. 12, No. 4 ( 1983-10), p. 569-574
Abstract:
It has become of interest to study long‐term effects of CO 2 concentration on plant growth, because intensive burning of fossil fuels and destruction of forests promise to continue the recent rise in atmospheric partial pressures of CO 2 into the next century (Bolin, 1977; Stuiver, 1978). Effects of CO 2 enrichment on growth of crop and forest species were therefore studied for the first time in the field in open top exposure chambers at daytime mean CO 2 concentrations of 612, 936, 1292, and 1638 mg m −3 , and in ambient control plots. Increased growth of plant parts of corn ( Zea mays L. ‘Golden Bantam’), soybean [ Glycine max L. (Merr.) ‘Ransom’], loblolly pine ( Pinus taeda L.), and sweetgum ( Liquidambar styraciflua L.) were recorded. Growth increases for soybean and sweetgum in elevated CO 2 atmospheres were due to increases in leaf area and photosynthesis per unit leaf area, and decreases in conductance and, therefore, water use. For corn, however, photosynthesis was unaffected by CO 2 enhancement, and growth stimulation appeared to be due to lowered conductance and increased water use efficiency alone.
Type of Medium:
Online Resource
ISSN:
0047-2425
,
1537-2537
DOI:
10.2134/jeq1983.00472425001200040028x
Language:
English
Publisher:
Wiley
Publication Date:
1983
detail.hit.zdb_id:
120525-0
detail.hit.zdb_id:
2050469-X
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