NUTRIENT ELEMENT DISTRIBUTION IN ORGANS OF HEPTACODIUM MICONIOIDES IN DIFFERENT COMMUNITIES AND ITS RELATIONSHIP WITH SOIL NUTRIENTS
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    Abstract:

    Based on investigations and results of Twinspan classification,20 plots in the Dapanshan Nature Reserve were sorted into five different kinds of communities.To well understand nutrient element distribution of Heptacodium miconioides and its relationship with soil nutrients in those five communities,five nutrient elements in five organs of H.miconioides sampled during its anthesis were measured.Results show:1) Nutrient contents in the plant differed somewhat from community to community,but the differences were not significant by related samples nonparametric test(p > 0.05).And the variation coefficients of N,P or K were higher than of Ca or Mg.2) Among the organs N,P or K content declined in the order of leaf > bark > branch > stem,while Ca or Mg in the order of bark > leaf > branch > stem,and the total content of the five elements was in the order of leaf > bark > branch > stem.The differences were significant by related samples nonparametric test(p < 0.01).The variation coefficient of the mean content of the same element in different organs was in the order of leaf > bark > branch > stem.3) No close relationship was found between soil nutrient contents and the five elements in H.miconioides,indicating the variation of the nutrient contents in the plant in different communities was not dominated by the soil nutrient contents,but by other habitat conditions,like thickness of the soil layer,exposure of rocks,etc.

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Liu Peng, Hao Chaoyun, Chen Zilin, Zhang Zhixiang, Wei Fumin, Xu Shizhen. NUTRIENT ELEMENT DISTRIBUTION IN ORGANS OF HEPTACODIUM MICONIOIDES IN DIFFERENT COMMUNITIES AND ITS RELATIONSHIP WITH SOIL NUTRIENTS[J]. Acta Pedologica Sinica,2008,45(2):304-312.

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History
  • Received:November 01,2006
  • Revised:January 29,2007
  • Adopted:
  • Online: May 10,2013
  • Published: