有珠山噴火による噴出物のトドマツ枝葉への付着がその葉量におよぼす影響

概要

論文の詳細を見る
The proportion of coarse particle ejecta, adhered to twigs and needles of Saghalin-fir (Abies sachalinensis(FR.SCHM.) MAST.), becomes high as same as on the ground at the site near the crater. The thickness of adhered ejecta increased in paralell with the thickness on the ground and it reached an asymptote of 30-40 cm. The amount of needles of Saghalin-fir covered by coarse ejecta at 30-50 cm in depth showed a decrease of 30-50% of dry weight in comparing with that at 2-10 cm depth of ejecta. The decrease seemed to be harmful physical effect, caused by the ejecta adhering on the twigs and needles or Saghalin-fir. The adhered ejecta on the twigs and needles were scattered by the strong wind occurred on september 15 1977. Consequently, by researching on october 12,the amount of ejecta decreased to 1/7 or so against that before the storm.
日本生態学会の論文
1979-09-30