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１９９２年６～１０月，在长白山自然保护区（海拔高度７４０ｍ），用现代化学、生物化学分析方法，对原始阔叶红松林的土壤Ｎ素供应状况，优势树种林木Ｎ素营养与土壤Ｎ素供应关系及与物候的关系，优势树种间Ｎ素营养关系进行了动态研究。结果表明：（１）根层土壤含水率、全Ｎ含量、ＮＯ３－Ｎ和ＮＨ４－Ｎ含量与其上层动态趋势相似并和下层土壤有较大相关性；（２）原始阔叶红松林冠层优势树种林木特别是红松在生长季对ＮＯ３－Ｎ、ＮＨ４－Ｎ吸收利用和土壤Ｎ素供应状况是极其适应的，而且这些树种对Ｎ素的需求和其物候情况紧密相关；（３）在生长季中，各种林木对Ｎ素吸收利用在时间动态上是不一致的，避免了树种间对Ｎ素需求的激烈竞争，使群落保持稳定。
From June to October 1992, in the Changbai Mountain Nature Reserve (altitude 740m), with the modern chemical and biochemical methods, the effects of nitrogen supply on the soil, N nutrition in dominant tree species and N Supply relationship and the relationship with the phenology, the dominant species of N nutrition relationship between dynamic research. The results showed that: (1) The soil moisture content, total N content, NO3-N and NH4-N content in the root layer were similar to those in the upper layer and had a higher correlation with the lower soil layer; (2) Tree species, especially Korean pine, are extremely adaptable to the absorption and utilization of NO3-N, NH4-N and soil N supply during the growing season, and their demand for N is closely related to their phenological conditions. (3) In the middle of the season, N trees used up and down in various forests were not consistent in time and dynamic, which prevented the fierce competition between the species and the demand of N and kept the community stable.