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当前位置: 首页 > 文章 > 凉水自然保护区原始阔叶红松林土壤微生物的主要生理类群及分布 东北林业大学学报 2008,36 (3) 18-19+50
Position: Home > Articles > Major Physiological Groups of Soil Microorganism and Its Distribution in Primitive Korean Pine and Broad-leaved Forest in Liangshui Nature Reserve Journal of Northeast Forestry University 2008,36 (3) 18-19+50

凉水自然保护区原始阔叶红松林土壤微生物的主要生理类群及分布

作  者：
王轶;邹莉;王义
单  位：
东北林业大学
关键词：
土壤;微生物;类群;原始阔叶红松林;凉水自然保护区
摘  要：
采用稀释平板培养法分析了小兴安岭凉水自然保护区原始阔叶红松林根际、非根际土壤微生物数量及其主要生理类群分布规律。结果表明:原始阔叶红松林土壤微生物数量具有明显的垂直变化规律,即土壤微生物主要集中在0~20 cm处的土层,10 cm处数量达到高峰,总菌数最高达432.1×106CFUg-1,且随土层加深,微生物数量逐渐减少。在水平分布上,根际微生物的数量大于非根际。三大类土壤微生物中细菌数量占绝对优势,占总菌数的89%以上;放线菌次之,占总菌数的7%;真菌最少,占总菌数的4%。原始阔叶红松林各主要生理类群中,固氮菌数量最多,纤维素分解菌其次,解磷细菌最少。
译  名：
Major Physiological Groups of Soil Microorganism and Its Distribution in Primitive Korean Pine and Broad-leaved Forest in Liangshui Nature Reserve
作  者：
Wang Yi,Zou Li,Wang Yi(College of Forestry,Northeast Forestry University,Harbin 150040,P.R.China)
关键词：
Microorganisms;Physiological groups;Primitive Korean pine and broad-leaved forests;Liangshui nature reserve
摘  要：
Dilution plate culture method was used to measure the number,major physiological groups and distribution regularity of microorganisms in rhizosphere and non-rhizosphere soils in the primitive Korean pine and broad-leaved forest in Liangshui Nature Reserve,Xiaoxing'anling.The soil microorganisms in the primitive Korean pine and broad-leaved forest show an evidently vertical changing regularity,namely,the soil microorganisms mainly concentrate in 0~20 cm soil layer.The total amount of microorganisms at 10 cm soil layer reaches its maximum(432.1×106 CFU per gram of dry soil),and the number of microorganisms decreases with the soil layer deepening.The quantity of rhizosphere microorganisms is more than that of non-rhizosphere.Among the soil microorganisms,bacteria are dominant,accounting for 89%,and then followed by actinomyces(7%) and fungi(4%).For the major physiological groups in the primitive Korean pine and broad-leaved forest,azotobacter,cellulose decomposing bacteria and phosphobacteria exhibit a decreasing trend in quantity.

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