长白山红松阔叶林的生物养分循环
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THE NUTRIENT CYCLING IN THE KOREAN PINEBROADLEAVED FOREST OF THE CHANGBAI MOUNTAINS
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    摘要:

    本文对东北长白山红松阔叶林的生物量,营养元素分布和养分循环进行研究,结果表明:该地每公顷生物量约为211吨,其中地上部分生物量占82%,地下部分占18%,而年生产量每公顷为7.087吨.该林分地上部分生物量的氮、磷、钾、钙和镁分别为每公顷618.6、56.47、511.82、1057.95和75.85公斤,而年生物量的氮、磷、钾、钙和镁分别为每公顷78.58、7.72、45.80、84.51和13.97公斤.凋落物在养分循环中起着重要作用,在从土壤年吸收的养分中,大量养分通个凋落物又归还土壤.通过计算看出,生产1吨乔木生物量,红松需要消耗氮、磷、钾、钙和镁分别约为9、1、3、4及1公斤,而阔叶树需要消耗上述养分分别约为16、1、9、17及4公斤.

    Abstract:

    The biomass and biological nutrient cycling in a Korean pine-broad leaved forest stand of Natural Reserve in the Changbai Mountains of Jilin provice were studied.Results showed that the total biomass of the stand was 210,944 kg/ha,the biomass of the above ground parts constituted 82%,and that of below ground parts 18%.lts total annual production was 7087 kg/ha,and chat of herbs was 3.43%.The contents of N,P,K,Ca 2nd Mg in the above ground biomass in the stand was 618.6,56.47,511.82,1057.95 and 75.35 kg/ha,and their amounts of annual biomass production was 78.58,7.72,45.80,84.51 and 13.97 kg/ha respectively.The percentage of nutrients uptake by trees constituted 73-92% of the total annual nutrient requirement.Althrough the biomass production of herbs only constituted 3.4% of the total biomass production,the amounts of nutrient in the production of them constituted 7-26% of the total annual nutrient require requirement to meat.

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程伯容,丁桂芳,许广山,张玉华.长白山红松阔叶林的生物养分循环[J].土壤学报,1987,24(2):160-169. Cheng Borong, Ding Guifang, Xu Guangshan, Zhang Yuhua. THE NUTRIENT CYCLING IN THE KOREAN PINEBROADLEAVED FOREST OF THE CHANGBAI MOUNTAINS[J]. Acta Pedologica Sinica,1987,24(2):160-169.

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  • 在线发布日期: 2013-02-25
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