A Larix plantaion forest has been investigated to examine its stand structure and dynamics. A study plot is located in compartment 114 of the Tomakomai Experimental Forest with area 0.12-ha was introduced in 1981, followed by repeated tree censuses (3-8year interval).　Hiura, T., Fujito, E., Ishii, T., Naniwa, A., Sugata, S., Ishida, K., Murakami, M., Kato, E., Maeno, H., Fukushima, Y. & Sakai, T. (1998) Stand structure of deciduous broad-leaved forest in Tomakomai Experimental Forest, based on large-plot data. Research Bulletin of Hokkaido University Forests 55: 1-10; Hiura, T. (2001) Stochasticity of species assemblage of canopy trees and understory plants in a temperate secondary forest created by major disturbances. Ecological Research 16: 887-893.; Hiura, T. (2005) Aboveground biomass and net biomass increment in a cool temperate forest on a landscape scale. Ecological Research 20: 271-277.; Kaneko, N., Sugawara, Y., Miyamoto, T., Hasegawa, M. and Hiura, T. (2005) Oribatid mite community structure and tree species diversity: A link? Pedobiologia 49: 521-528.; Toyota, A., Tayasu, I., Fujimaki, R., Kaneko, N., Uchida, M., Shibata, Y., Hiura, T. (2010) Combined effects of vegetation switch and subsequent change in soil invertebrate compositions on the soil carbon accumulation patterns, revealed by radiocarbon concentrations. Radiocarbon 52: 1471-1486; Ishihara, M. and Hiura, T. (2011) Modeling leaf area index from litter collection and tree data in a deciduous broadleaf forest. Agricultural and Forest Meteorology 151: 1016-1022 (ja) 北海道大学苫小牧研究林114林班カラマツの人工林の林分構造および動態を調べるため、1981年に面積0.12haの調査区を設け、3-8年間隔で、本数、胸高直径または胸高周囲長を計測している。更新台帳番号100600号　1918(T7)年　新植　カラマツ　長期観察林24号　1981(S56）年　設定。