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在相同立地类型组的白桦幼、中和成熟林中各取土壤剖面３～４块，分别于６、８、１０月进行根际取样化验，以研究白桦和红松根际部土壤养分的林龄分布及季节动态。结果表明：白桦红松林中，白桦与红松根际土壤养分具有互补性特征；根际土壤ｐＨ环境趋向酸碱平衡过程；根际土壤养分、ｐＨ值林龄分布和动态过程中，中龄林起承上启下转换作用
Three to four soil profiles were collected from young and middle-aged birch birch in the same site-type group. Root rhizosphere sampling was performed in June, August and October to study the age of soil nutrients in the rhizosphere of Betula platyphylla and Pinus koraiensis Distribution and seasonal dynamics. The results showed that the nutrients in the rhizosphere of Betula platyphylla and Pinus koraiensis were complementary to each other. The rhizosphere soil pH environment tended to be acid-base balance process. In the rhizosphere soil nutrient, pH value, age distribution and dynamic process, Accept the conversion function