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Citation:

High Carbon Content Larch (Larix olgensis) Provenances Selection

  • Received Date: 2013-09-22
  • Taking 31-year-old larch (Larix olgensis) provenance test plantation as object, the non-destructive sampling method was used to compare the carbon content of wooden core sample at the height of 1.3 m and the average carbon content of the whole trunk. It was found that there was an obvious linear relationship between them. By regression analysis, a linear equation, y=0.908 2x+4.379 4, R2 is 0.842 5, was derived. The fitting degree of the equation reached the desired level. The result showed that the average rate of carbon content in trunk could be calculated by using the carbon content of wood core sample at the height of 1.3 m. The analysis methods used in this study include variance analysis, multiple comparisons and correlation analysis. The superior provenances of high carbon content were selected and the variations in growth traits, timber characters, biomass of trunk and carbon content were analyzed. The results showed that variation in biomass and carbon content of the wood were significant, the coefficients of variations for both were 21.33% and 21.30%. The results of correlation analysis showed that the carbon content was significantly and positively correlated with the growth traits and biomass. According to these results, the authors analyzed the data by the theory of variance analysis and Duncan method. Two provenances, XBH and BDS, were chosen as the best provenances. The mean carbon content values of XBH and BDS were 74.38 kg and 69.27 kg respectively, and the mean value of these two provenances was higher than the overall mean value by 27.83%. The carbon content of XBH was higher than that of the CK and the provenance LSH (with the least carbon content) by 60.00% and 47.8%, and higher than the mean value of all the provenances by 28.3%.
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High Carbon Content Larch (Larix olgensis) Provenances Selection

  • 1. National Key Laboratory of Forest Tree Improvement and Biotechnology, Northeast Forestry University, Harbin 150040, Heilongjiang, China

Abstract: Taking 31-year-old larch (Larix olgensis) provenance test plantation as object, the non-destructive sampling method was used to compare the carbon content of wooden core sample at the height of 1.3 m and the average carbon content of the whole trunk. It was found that there was an obvious linear relationship between them. By regression analysis, a linear equation, y=0.908 2x+4.379 4, R2 is 0.842 5, was derived. The fitting degree of the equation reached the desired level. The result showed that the average rate of carbon content in trunk could be calculated by using the carbon content of wood core sample at the height of 1.3 m. The analysis methods used in this study include variance analysis, multiple comparisons and correlation analysis. The superior provenances of high carbon content were selected and the variations in growth traits, timber characters, biomass of trunk and carbon content were analyzed. The results showed that variation in biomass and carbon content of the wood were significant, the coefficients of variations for both were 21.33% and 21.30%. The results of correlation analysis showed that the carbon content was significantly and positively correlated with the growth traits and biomass. According to these results, the authors analyzed the data by the theory of variance analysis and Duncan method. Two provenances, XBH and BDS, were chosen as the best provenances. The mean carbon content values of XBH and BDS were 74.38 kg and 69.27 kg respectively, and the mean value of these two provenances was higher than the overall mean value by 27.83%. The carbon content of XBH was higher than that of the CK and the provenance LSH (with the least carbon content) by 60.00% and 47.8%, and higher than the mean value of all the provenances by 28.3%.

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