Effect of top soil removal on transition of initial growth of Japanese larch
2020
Nakagawa, M. (Forestry Research Institute, Hokkaido Research Organization, Bibai-shi, Hokkaido (Japan)) | Tashiro, N.
Effect of top soil removal on transition of initial growth of Japanese larch, Larix kaempferi, was investigated. Eight years after planting in Higashikagura, tree growth was not significantly different from that in sites prepared by weeding and topsoil removal. Five years after planting in Ashoro, tree growth was the highest with light topsoil removal, followed by that with weeding; the least growth was identified with heavy topsoil removal. The results of this study indicate that initial growth of Japanese larch is not negatively affected or become better by topsoil removal. However, quite heavy topsoil removal may negatively affect growth, likely through thinning of the optimum soil horizon for root systems.
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