【摘要】 <正> 长白山自然保护区位于长白山北坡。从植被的分布,可把长白山北坡的林型划分为:杜鹃岳桦林、红松云冷杉暗针叶林、杜香落叶松林、灌木阔叶红松林和胡枝子长白赤松林五个主要林型。长白山北坡土壤也有明显的垂直带分布。从山顶到山麓,土壤的垂直分布可划分为:山地苔原土、山地生草森林土、山地棕色针叶林土和山地暗棕色森林土四个主要土壤类型。我们在1982年,对山地棕色针叶林土上生长的杜香落叶松林、山地暗棕色森林土上生长的胡枝子长白赤松林和灌木阔叶红松林。三个主要林型下土壤微生物生态分布的季节性动态变化?进行了调查和分析。更多还原

【Abstract】 The composition and distribution of the soil microflora,the intensityof soil respiration,and the activity of soil enzymes under three differentforest types on the Northern slope of the Changbai Shan Mountain Nat-ural Reserve in three diffrent seasons (Spring,Summer and Autumn) in1982 were studied.The results indicated that under diffrent types offorest,the ecological distribution of soil microorganisms,the intensityof soil respiration and the activity of soil enzymes in three seasonswere diffrent.But the tendency of variation was higher in Spring,lowerin Summer and increased in Autumn.The number of soil microorganisms,especially the number of soil bacteria,and the intensity of soil respir-ation under broad-leaved and coniferous mixed forest was greater thanthat under the coniferous forest.更多还原