The study of habitat improvement for wildlife in coniferous artificial forest.

这项研究是在和歌河那县北海道大学和歌山实验森林进行的，目的是改善野生动物的栖息地，这些野生动物主要是梅花鹿和日本斑羚。在宽阔的杉木和柏树人工林中，砍伐了5块地(每块0.02公顷)。期待阔叶树的自然更新成为野生动物的觅食场所。1996.12、1997年11月、1998年11月和1998.11两年分别对各样地进行植被调查，并于1996年建立了面积较大(0.25公顷)的天然阔叶林旁的另一块皆伐样地。在宽阔的人工林中，向采伐后林区入侵的物种数量增加不多。虽然有一些喜好日照的物种似乎受到了入侵，但也有一些物种因为光照条件的巨大变化而死亡。林木入侵个体数随样地而变化，有的样地个体数增加，有的样地数量减少。这是因为一些物种(例如紫珠)被鹿和燕子吃掉了。在砍伐地建立之前，这片森林里没有鹿的进食迹象。由此可见，这样一小块清晰可见的斑块开始具有了野生动物的饲养地价值。但从树木入侵开始，动物的取食压力就很大，所以必须采取一定的保护措施，直到树木长得足够长，不会受到树梢的损害(如鹿栏)，在天然林旁边的地块，我们围封了一些区域，这些围栏里的树木入侵的数量和生长都高于另一个区域。

The study was carried out in Wakayama Experimental Forest of Hokkaido University in Wakayaina prefecture, to improve the habitat of wildlife, those are mainly sika deer and Japanese serow. 5 lots(0.02ha each) were clear cut in wide artificial forests of Japanese cedar and cypress. to expect the natural regenerations of broad leaved trees as feeding site for wildlife. The vegetation research was done in each plots in 1996.12, 1997.11.1998.6 and 1998.11 also established another clear cut plot which was situated next to the natural broad leaved forest and the size is more bigger(0.25ha) in 1996. The number of species those invaded to the after clear cut area were not increased so much in wide artificial forest. It seemed though some species those prefer sunshine were invaded, but some species were died because of big change of light condition. The number of invaded individuals of tree were depended on plots, in some plots it increased and in some plots it decreased. Those were because some species (for example Callicarpa japonica) were eaten by deer and serow. There had been no deer feeding signs in this forest before the clear cut plots were established. This shows such a small clear cut patch began to have a value of feeding site for wildlife. But animal feeding pressure was high from the beginning of tree invasion, so certain protection step until trees grow enough to become free from shoot damage (for example the deer fence), is necessary, In the plot next to the natural forest, we enclosed some areas, the number of tree invasion and growth of those trees in such enclosures were higher than another area.