Primary Production Relations in Plantations of Thujopsis dolabrata in the Noto Peninsula: Materials for the Studies of Growth in Forest Stands. 12.
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A 28-year-old plantation with foliage leaf of 31.2t in dry weight and 12.9 in leaf area index produced annually 11.3t of dry matter, and a 25-year-old plantation with foliage leaf of 44.0t in dry weight and 17.9 in leaf area index produced 19.2t of dry matter annually, both as the aerial parts, all per hectare. A 38-year-old plantation had 31.9t/ha of leaf dry weight and 12.9 of leaf area index. These large amounts of foliage leaf were due to long average life span of leaf but not to large annual production of leaf. Annual production of leaf was nearly the same as other conifers. Net production of trees within a stand was linearly proportional to leaf mass on them, but independent from the efficiency of leaf, net assimilation rate, except for trees of smaller dimensions. Net assimilation rates of these stands were lowest among coniferous forests. Net assimilation rate increased with dimension of trees such as D.B.H., height and leaf mass on tree, though not linearly. Leaf water content decreased with increasing D.B.H. and height of trees, both for the current year leaf and older leaf.
- 東京大学大学院農学生命科学研究科附属演習林,The Tokyo University Forests,東京大学農学部林学科,東京大学農学部演習林田無試験地,Department of Forestry, Faculty of Agriculture, University of Tokyo.,University Forest Experiment Station at Tanashi, Faculty of Agriculture, University of Tokyo.の論文
東京大学大学院農学生命科学研究科附属演習林,The Tokyo University Forests,東京大学農学部林学科,東京大学農学部演習林田無試験地,Department of Forestry, Faculty of Agriculture, University of Tokyo.,University Forest Experiment Station at Tanashi, Faculty of Agriculture, University of Tokyo. | 論文
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- Primary Production Relations in Plantations of Thujopsis dolabrata in the Noto Peninsula: Materials for the Studies of Growth in Forest Stands. 12.