@article{oai:kpu.repo.nii.ac.jp:00005084, author = {梶原, 幹弘 and Kajihara, Mikihiro}, journal = {京都府立大學學術報告. 農學, The scientific reports of Kyoto Prefectural University. Agriculture}, month = {Nov}, note = {筆者は先に, 幹と樹冠とに分けて林分の垂直的構造を具体的に表現するために考案した林分構造図を提案し, 同齢林と択伐林についてその実例を示した。ここでは, 残るもう一つの代表的林型である二段林の林分構造図をとりあげた。平均樹高が異なる三つのアカマツ・ヒノキ二段林の林分構造図を作成したが, 同齢林や択伐林におけると同様に, そこには構造的特徴が良く現われていた。下層のヒノキの構造, 幹や樹冠の量, 樹種の混交歩合に関して, Plot IはPlot II, IIIとは違っていた。近畿・中国地方のこのような二段林の平均的状態とくらべると, Plot Iは過密であったが, Plot II, IIIは逆にやや過疎であった。林分構造図は林分構造の有効な表現方法であり, しかも立木を一切伐倒しないで作成できる。固定試験地でこれを継続的に作成すれば, 林木の生長に関する新たな興味ある情報が得られるであろう。, The author previously proposed the stand structure diagram originated for the quantitative representation of vertical stand structure with the distinction between stem and crown and gave the diagrams of both evenaged and selection forests. This paper deals with that of two-storied forest which is the last, another forest type. Here, the diagrams were constructed on 3 two-storied forests of Pinus densiflora and Chamaecyparis obtusa with different, average tree heights. These sample diagrams made the structural characteristics clear as well as those of even-aged forest and selection one. Plot I differed from Plot II and III on the structure of under-storied Chamaecyparis obtusa, the amounts of stem and crown, and the mixture rate of two tree species. Comparing with the averages of such two-storied forests in Kinki and Chugoku districts, the former was overstocked, while the latter was a little understocked. This diagram is one of the effective expressions of stand structure and, moreover, can be done without felling any tree. Its successional establishment on the parmenent experimental plot will provide some new and interesting informations on the growth of stand.}, pages = {58--67}, title = {京都府京北町のアカマツ・ヒノキ二段林の林分構造図(林学部門)}, volume = {34}, year = {1982}, yomi = {カジハラ, ミキヒロ} }