Analysis of species and genetic diversities' dynamics in natural forest management.

天然林经营物种和遗传多样性动态分析。

基本信息

批准号：
08456075
负责人：
IDE Yuji
金额：
$ 5.38万
依托单位：
The University of Tokyo
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
1996
资助国家：
日本
起止时间：
1996 至 1998
项目状态：
已结题

项目摘要

It is thought that sustainable wood product is secured by the extensive selection cutting which is a sustainable management system of natural forest conducted in University Forest in Hokkaido, The University Forests, Faculty of Agriculture, The University of Tokyo. However there is little research on the changes in species diversity and genetic diversity of the natural forest where this management was conducted. Then we put the problems in the utilization of natural forest by the extensive selection cutting in order and discussed on them from the viewpoint of species diversity. We discussed on the genetic effect of selection cutting of Abies sachalinensis forest as an practical sample. And we also revealed the actual genetic diversity of Abies sachalinensis forests in the University Forest in Hokkaido.Following results were obtained by this research ; 1) Forest structure, especially in diameter of trees, had been changing by the selection cutting in the natural forest. Then it seemed to be necessary to cut broad-leaved species to maintain the species diversity of the forest. 2) Percentage of homogeneous allele combinations was decreased and heterogeneous allele combinations were increase in the natural stand of Abies sachalinensis by the selection cutting. However there was not significant change in allele frequencies in the population. 3) Genetic differentiation was detected among Abies sachalinensis populations distributed a different altitude on Mt. Tairoku-san in University Forest in Hokkaido.

人们认为，可持续的木材产品是通过广泛的选择切割来确保的，这是在北海道的大学森林，大学森林，东京大学农业学院森林的可持续管理系统。但是，关于进行这种管理的天然林的物种多样性和遗传多样性的变化，几乎没有研究。然后，我们通过广泛的选择切割来利用天然林中的问题，并从物种多样性的角度对其进行了讨论。我们讨论了切割Abies sachalinensis森林的遗传效应，作为实用样本。我们还揭示了北海道大学森林中Abies sachalinensis森林的实际遗传多样性。根据这项研究获得了追踪结果。 1）森林结构，尤其是在树木直径上，在天然林中的选择一直在改变。然后，似乎有必要切割阔叶物种以维持森林的物种多样性。 2）均质等位基因组合的百分比降低，而异质等位基因组合在ABIES sachalinensis的自然林中增加了。但是，人口的等位基因频率没有显着变化。 3）在北海道大学森林的田洛木山（Mt. tairoku-san）分布着不同的海拔高度，发现了遗传分化。