Chekhov, who wanted to free himself from his mental and writing crises, went to Russia s Far East region, especially to Sakhalin and Vladivostok, and witnessed the life and fate of the exiles.

The T-square study on the spatial pattern of Spruce-fir forest in Jingouling Forest Farm shows that two spruce-fir forests are separately in aggregate distribution and random distribution.

Root biomass of broad-leaved Korean pine forest(BLKPF), spruce-fir forest(SF) and subalpine berch forest(SBF) in Changbai Mountain was studied in this paper.

This paper took spruce-fir forests in over-logged forest region of Changbai Mountain as research object, adopted qualitative and quantitative research approaches, and then analysed environmental impact on regeneration, remained trees, soil, vegetation and so on caused b.

The article studies the effects on spruce fir forests′ litter and soil moisture content and litters′ decomposing rate under different management system in north Changbai Mountains.

Through sample plots investigation and soil sampling analysis, the paper discusses spruce fir forests soil physical and chemical properties, nutrient content, soil enzymes and soil microorganisms amount in north Changbai Mountains compared with soil under planted larch forest.

It is used in the paper in demonstrating the growing process of the average diameter at breast height and of the basal area each hactare of fir stand,whose growth characteristics are specifically analysed in the meantime.