富士山におけるイタドリの蒸散と葉温

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概要

• 論文の詳細を見る

• Polygonum cuspidatum is one of the pioneer perennials in the volcanic desert succession on Mt. Fuji. Energy budget analysis was done to evaluate the effects of environment on plant behavior. Transpiration rate and leaf temperature (i.e. plant behavior) were measured in leaves of a clump and of seedlings of P. cuspidatum together with the parameters of an energy budget equation (the environmental factors) on typical summer days. The data were analyzed by inserting them into the energy budget equation. The transpiration rate-leaf temperature diagram derived from the energy budget equation was able to represent the collective effect of the environmental factors. The diagram showed that the environment of a seedling leaf was much more severe than that of a chump leaf in the sense that both its transpiration rate and leaf temperature were much higher. This severity was caused by high absorbed radiation and air temperature. Since a seedling grows solitarily and close to the heated, bare soil surface, its absorbed radiation and air temperature were considerably higher than those of a clump leaf under insolation. The screen climate in this region does not indicate such severity. To evaluate actual plant behavior, therefore, it will be necessary to consider the plant's microclimate.

• 日本生態学会の論文
• 1976-03-31

著者

• 丸田 恵美子

  東京大学理学部植物学教室

• 佐伯 敏郎

  東京大学理学部生物学教室

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• 富士山におけるイタドリの蒸散と葉温
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• 富士山におけるイタドリのサイズ構成
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