奪葉が植物の生長に及ぼす影響という問題のためのモデル

概要

論文の詳細を見る
NAKANO, Kazutaka (Dept. Bot., Fac. Sci., The Univ. Tokyo, Tokyo 113). 1977. A Model for the problem of the effects of defoliation on plant growth. Jap. J. Ecol., 27 : 227-247. The effects of mechanicai defoliation on the accumulation of food reserve in either deciduous trees or deciduous perennial herbs during a semi-long term (one or a few years) were examined with a mathematical model. Its applicability to real cases was satisfactorily confirmed. Analytical consideration through modeling clarified the significance of some plantresponses after defoliation such as the suppression of the growth of non-photosynthetic organs, and resprouting. It suggested that these responses are, in most cases, used to prevent a drastic decrease of the food reserve held by plants. Furthermore, it theoretically reaffirmed the validity of the idea previously advocated by the author on grounds of experimental data that the indicator" Average Leaf Longevity (ALL)" is one of the most fundamental clues to the problem of the effects of defolistion on plant growth. ALL can unify the three factors in the intensity of defoliation pressure, i.e., timing, frequency and severity. Moreover, ALL is almost independent of any response after the defoliation and can be manipulated to represent the outside forces which induce the defoliation. The principle of the model developed here can also be applied to the annuals.
日本生態学会の論文
1977-09-30