Diurnal variations in stomatal conductance of Betula ermanii and Pinus pumila at the timberline on Mt. Shogigashira, central Japan.
|
Accession number;04A0287853
|
| Title;Diurnal variations in stomatal conductance of Betula ermanii and Pinus pumila at the timberline on Mt. Shogigashira, central Japan. |
| Author;
TAKAHASHI K
(Shinshu Univ., Matsumoto, Jpn)
|
Journal Title;Journal of Phytogeography and Taxonomy
|
Journal Code:Y0534A
|
ISSN:0388-6212
|
|
VOL.51;NO.2;PAGE.159-164(2003)
|
| Figure&Table&Reference;FIG.3, REF.21 |
| Pub. Country;Japan |
| Language;English |
| Abstract;Diurnal variations in the stomatal conductance of Betula ermanii and Pinus pumila were studied at the timberline (2,630 m a.s.l.) on Mt. Shogigashira in central Japan. Weather conditions at this timberline were usually clear sky in early morning, but foggy or cloudy from late morning or noon during August and mid-September in 2001. Rainfall was also frequently observed in late afternoon during this period. Stomatal conductance of B. ermanii and P. pumila was measured on four days during mid-August and mid-September. However, the measurement could not be performed throughout one day of the four because of rainfall from morning. Fog occurred from morning during the other three days that stomatal conductance could be measured. Photosynthetic photon flux density decreased and relative humidity increased in accordance with the occurrence of fog. Diurnal variations in the stomatal conductance of B. ermanii and P. pumila were not large on the three days. Therefore, this study suggests that stomatal closure of B. ermanii and P. pumila seems to occur infrequently at the timberline on Mt. Shogigashira, at least, during the examined period because of foggy and rainly climatic conditions. (author abst.) |
|
|
|
Related Articles;
|
|
