A general relationship between CO2-induced reductions in stomatal conductance and concomitant increases in foliage temperature
1993
Idso, S.B. | Kimball, B.A. | Akin, D.E. | Kridler, J.
Simultaneous measurements were made of the temperatures and stomatal conductances of leaves of sour orange trees, water hyacinth (Eichhornia crassipes) and cotton (Gossypium hirsutum) growing in chambers in the field in normal air and air enriched with 300 p.p.m. CO2 above the ambient concentration. The results suggest that a plant's foliage temperature response to atmospheric CO2-enrichment is directly proportional to its degree of stomatal closure, i.e. that plants which experience a greater stomatal closure in response to atmospheric CO2 enrichment experience a greater warming of their foliage. The data also suggest that this primary relationship may be modified by CO2-induced changes in leaf chlorophyll content that may have implications for global climate change.
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