森林総合研究所 | 九州大学大学院農学研究院森林資源科学部門
Forestry and Forest Products Research Institute | Laboratory of Forest Management, Division of Forest Environment and Management Science, Department of Forest and Forest Product Science, Faculty of Agriculture, Kyushu University
林業土木コンサルタンツ | 九州大学大学院農学研究院森林資源科学部門
For. Civil Eng. Consultants | Laboratory of Forest Management, Division of Forest Environment and Management Science, Department of Forest and Forest Product Science, Faculty of Agriculture, Kyushu University
九州大学大学院農学研究院森林資源科学部門
Laboratory of Forest Management, Division of Forest Environment and Management Science, Department of Forest and Forest Product Science, Faculty of Agriculture, Kyushu University
九州大学大学院農学研究院森林資源科学部門
Laboratory of Forest Management, Division of Forest Environment and Management Science, Department of Forest and Forest Product Science, Faculty of Agriculture, Kyushu University
Changes in relative illuminance and height growth-relative illuminance relationship for Abies and Tsuga saplings after selective cutting in an Abies and Tsuga natural forest were studied at Kirishima, southeast Japan. The results obtained were as follows. (1) Relative illuminance decreased from 21.4% to 14.3% during a 7-years period afler selective culting. (2) Height growth of Tsuga saplings increased with relative illuminance, whereas that of Abies was not. (3) Height growth of Abies saplings in the selective cutting forest were larger than that in the closed forest. From these results, it is suggested that the maintenance and improveinent of light condition within a forest by artifical silvicultural regimes are necessary to grow regenerated trees in an Abies and Tsuga natural forest.