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首页> 外文期刊>Ботанический журнал >Influence of Picea obovata and Pinus sylvestris trees on the lower layer primary productivity in coniferous forests of the Kola Peninsula
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Influence of Picea obovata and Pinus sylvestris trees on the lower layer primary productivity in coniferous forests of the Kola Peninsula

机译：云杉和樟子松树对可乐半岛针叶林下层初级生产力的影响

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摘要

The influence of spruce (Picea obovata) and pine (Pinus sylvestris) trees on primary productivity of the lower layer in the light of concept of north-taiga nutrition status in coniferous forests in Kola Peninsula, Russia is considered. Particular emphasis is placed upon necessity of investigation of tree impact on lower layer plants depending on their nutritional strategy. It is shown that effect of spruce and pine trees on the lower layer has special features. In the pine forests, primary productivity and diversity of plants with atmospheric nutritional strategy (lichens and mosses) are highest below the crowns where additional input of nutrients with stem and crown waters is observed. A decline in productivity of green mosses, especially Hylocomium splendens, below the spruce crowns is explained by low extent of lighting and by aggressive character of stem and crown waters. A decrease in productivity of plants with soil strategy of nutrition (dwarf shrubs) in zones of crown edges and crown overlap is connected with increase of exchangeable aluminium concentration in the soil and increase of a competition with trees for nutrients.
机译：根据俄罗斯科拉半岛针叶林北针叶林的营养状况，考虑了云杉（Picea obovata）和松树（Pinus sylvestris）对下层初级生产力的影响。特别强调必须根据树木的营养策略研究树木对低层植物的影响。结果表明，云杉和松树对下层的影响具有特殊的特征。在松树林中，采用大气营养策略的植物（地衣和苔藓）的初级生产力和多样性在树冠以下最高，在树冠下可以观察到茎干和树冠水有更多的养分输入。在云杉冠之下的绿色青苔，尤其是Hylocomium splendens的生产力下降，是由于光照不足以及茎和冠水的侵略性所致。在树冠边缘和树冠重叠区采用营养土壤策略（矮灌木丛）的植物生产力下降与土壤中可交换铝含量的增加以及与树木对养分的竞争增加有关。

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