鉄道防雪林におけるドロノキ・トドマツ混交林の植栽経過

概要

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Deciduous trees, especially willow family (Salicaceae), have not been noticed worthy for rail-protecting forest against snow-drift. However, low tree-belt of pioneer tree species is indispensable for the establishment of general shelterbelt at severe-conditioned region.<BR>On March 1967 the writers investigated Japan poplar (Populus maximowiczii) and Todo fir (Abies sachalinensis) mixed stand at Kamitonbetsu, northern Hokkaido. Populus were planted in 1940 and Abies in 1941. Stem-analysis shows that Populus reached 10 meters high during 10 years after planting and helped the early growth of Abies.<BR>It is certain that if willows (Salix) and Populus are planted firstly, within 10 years will be gained low tree-belt and that they will cover the early blank of time of proper but slow-growing evergreen conifers.
社団法人日本雪氷学会の論文