| 阔叶红松林及其次生杨桦林优势树种间氮素营养关系的研究 |
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| 引用本文： | 李玉文,李英.阔叶红松林及其次生杨桦林优势树种间氮素营养关系的研究[J].东北林业大学学报,1994,22(1):7-16. |
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| 作者姓名： | 李玉文 李英 |
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| 作者单位： | 东北林业大学 |
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| 摘 要： | 为了探讨阔叶红松林演替与原始阔叶红松林稳定性中存在的Ｎ素机制作用，１９９１年７月，在长白山（北坡）自然保护区（海拔７４０ｍ），应用近几年建立的化学和生物化学分析方法，通过分析土壤Ｎ素及有效形态ＮＯ３－Ｎ、ＮＨ４－Ｎ的供应和林木的Ｎ素吸收利用状况，对原始阔叶红松林及破坏后形成的两个不同龄级的杨桦林中优热树种林木的Ｎ素营养状况及树种间Ｎ素营养关系进行了研究。结果表明：１．各样地土壤中Ｎ素营养状况及树种
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| 关 键 词： | 红松林 杨桦林 氮素营养 |
NITROGEN NUTRIENT RELATION OF THE DOMINANT TREE SPECIES IN DECIDUOUS KORAIEN PINE FOREST AND POPLAR-BIRCH FORESTS |
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| Li Yuwen,Li Ying,Li Junqing,Chat Yixin,Zhao Xiaohong,WangYehchu.NITROGEN NUTRIENT RELATION OF THE DOMINANT TREE SPECIES IN DECIDUOUS KORAIEN PINE FOREST AND POPLAR-BIRCH FORESTS[J].Journal of Northeast Forestry University,1994,22(1):7-16. |
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| Authors: | Li Yuwen Li Ying Li Junqing Chat Yixin Zhao Xiaohong WangYehchu |
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| Institution: | Northeast Forestry University |
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| Abstract: | In July of 1991,at the elevation of 740m of the Changbai Mountain Natural Reserve,we studied the N nutrient situation and relation of the dominant tree species in deciduous Koraien pine forest and two different aged poplar-birch forests to find out the nitrogen mechanism for the climax stability and community succession. Using Modern Chemical and Biochemical analysis methods,we analyzed N contents and available Nitrate(NO3-) and Ammonia(NH4-) as well as the exchange relationship between NO3- and NH4-,i.e.the nitrate reductase activity in the soil,and the N are situation and relation of the,dominant tree species.Conclusions are as follows:1.The dominant tree species in deciduous koraien pine forest to absorbt N responses with the N in soil situation,furthermore,they are some nourishment in the utilization of N among them,but they have not strong competition with each other.It is one of the major reason why the deciduous koraien pine forest is stable.2.The seedlings or saplings, absorb and utilize the N adaptation with the ecological conditions in order to survive well or to make the species alternation in the community succession. |
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| Keywords: | Deciduous Koraien Pine Forest Poplar-birch Forest Nitrogen Nutrition Succession Climax |
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