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秃杉人工林微量元素含量、积累与分配特征(PDF)

《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

Issue:
2009年01期
Page:
69-73
Column:
研究论文
publishdate:
2009-01-30

Article Info:/Info

Title:
Concentration, accumulation and distribution of microelements in Taiwania flousiana plantation
Author(s):
HE Bin1HUANG Hengchuan2CAO Ming2HUANG Chengbiao1 MENG Yuehuan2RONG Yi1CHEN Yuping1
1.Forestry College,Guangxi University,Nanning 530004,China;2.Shankou Forestry Farm of Nandan County Guangxi Province, Nandan 547200,China
Keywords:
Taiwania flousiana plantation microelement accumulation and distribution
Classification number :
S7185
DOI:
10.3969/j.jssn.1000-2006.2009.01.014
Document Code:
A
Abstract:
The concentration,accumulation,annual net accumulations and distribution of five microelements (Fe, Mn, Zn, Cu and B) in Taiwania flousiana plantation of three stand ages (4yearold,7yearold and 11year-old) were studied in Nandan Shankou Forestry Farm in Guangxi of China.. The results showed that concentrations of these five microelements in different components of T. flousiana plantation were in the order of leave, bark, branch, root, stem. In plant, concentrations of Mn and Fe were the highest among the five elements, followed by Zn and B, while Cu was the lowest in various organs of T. flousiana plantation. The total accumulation of microelements at three stand age plantations were 12.756kg/hm2, 25.175kg/hm2 and 46.393kg/hm2,respectively. Of the total storage of nutrients, 76.81%—87.84% was distributed in arbor layer, 2.39%—5.47% at forest floor layer, and 9.77%—17.72% at stand litter layer. The accumulation of microelements in T. flousiana varied at different stands growth stages. Most microelements accumulated in leaves and branches at 8yearold and 14yearold, while they moved gradually in stem and root at 28yearold. The accumulation of Fe or Mn was the highest, then Zn and B, and Cu the lowest. Microelement annual net accumulations in three stand ages plantation were 1.398kg/(hm2·a),1.420kg/(hm2·a) and 1.273kg/(hm2·a),respectively. Changes in annual net accumulation of various micronutrients in the same component were similar to that in various components,i.e., Mn or Fe,Zn,B,Cu.

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Last Update: 2009-05-06