| 混交林中水曲柳落叶松营养元素含量及季节动态 |
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| 引用本文： | 王庆成.混交林中水曲柳落叶松营养元素含量及季节动态[J].东北林业大学学报,1995,23(2):14-19. |
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| 作者姓名： | 王庆成 |
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| 作者单位： | 东北林业大学 |
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| 摘 要： | 分析孟家岗林场２２年生水曲柳落叶松混交林叶，枝，皮营养元素含量及叶中营养元素含量的季节动态。结果表明：两树种在不同一林分中，叶，枝，皮营养元素及分配明显不同，总的趋势是水曲柳高于落叶松；二者之间营养元素含量差异最大的器官是叶；叶中Ｎ，Ｐ，Ｋ的含量在生长季表现为下降的趋势；大部分营养元素在二树种叶中的含量动态呈非同步性。两树种间营养元素含量的较大差异和季节变动的百同步性，表明其种间关系的营养元素利用
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| 关 键 词： | 水曲柳 落叶松 混交林 营养元素含量 季节动态 |
THE CONCENTRATION AND SEASONAL DYNAMICS OF NUTRIENT ELEMENTS OF ASH AND LARCH IN THE MIXED PLANTATION |
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| Wang Qingcheng.THE CONCENTRATION AND SEASONAL DYNAMICS OF NUTRIENT ELEMENTS OF ASH AND LARCH IN THE MIXED PLANTATION[J].Journal of Northeast Forestry University,1995,23(2):14-19. |
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| Authors: | Wang Qingcheng |
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| Institution: | Northeast Forestry University |
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| Abstract: | The nutrient concentration and seasonal dynamics in foliage.twigs and barks of anh and larch in the 22 years old mixed plantation in Mengjiagang Forest Farm were studied in this paper.The results show as follows:the concentration and distribution ratio of various nutrient elements in the organs of the two species in the same stand are different significantly.The nutrient concentration in organs of ash are much higher than that in larch.The organ in which the concentration of most elements shows the biggest difference between the two species is foliage.The concentration of N,P.K in foliage of the two species decrease during the growing season.The dynamics of nutrient concentration in the foliage of the two species are asynchronous.The great difference of nutrient concentrations and the asynchronism of the seasonal dynamics show the harmonious relationship between the two species in the mixed plantation in nutrient elements utilization. |
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| Keywords: | Ash Larch Mixed plantation Nutrient concentration Seasonal dynamics |
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