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Calorific values and ash contents of different organs of Masson pine (Pinus massoniana) in southern China
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  • Published: 03 January 2012

Calorific values and ash contents of different organs of Masson pine (Pinus massoniana) in southern China

  • Wei Sheng Zeng1,
  • Shou Zheng Tang2 &
  • Qian Hui Xiao3 

Nature Precedings (2012)Cite this article

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Abstract

Calorific values of plants are important indices for evaluating and reflecting material cycle and energy conversion in forest ecosystems. Based on the data of Masson Pine (Pinus massoniana) in southern China, the calorific values (CVs) and ash contents (ACs) of different plant organs were analyzed systematically using hypothesis test and regression analysis in this paper. The results show: (i) the CVs and ACs of different plant organs are almost significantly different, and the order by AFCV (ash-free calorific value) from the largest to the smallest is foliage (23.55 kJ/g), branches (22.25 kJ/g), stem bark (21.71 kJ/g), root (21.52 kJ/g) and stem wood (21.35 kJ/g); and the order by AC is foliage (2.35%), stem bark (1.44%), root (1.42%), branches (1.08%) and stem wood (0.33%); (ii) the CVs and ACs of stem woods on top, middle and lower sections are significantly different, and the CVs are increasing from top to lower sections of trunk while the ACs are decreasing; (iii) the mean GCV (gross calorific value) and AFCV of aboveground part are larger than those of belowground part (roots), and the differences are also statistically significant; (iv) the CVs and ACs of different organs are related, to some extent, to diameter, height and origin of the tree, but the influence degrees of the factors on CVs and ACs are not the same.

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Authors and Affiliations

  1. Academy of Forest Inventory and Planning, State Forestry Administration of China https://www.nature.com/nature

    Wei Sheng Zeng

  2. Institute of Forest Resources Information, Chinese Academy of Forestry https://www.nature.com/nature

    Shou Zheng Tang

  3. Central South Forest Inventory and Planning Institute, State Forestry Administration of China https://www.nature.com/nature

    Qian Hui Xiao

Authors
  1. Wei Sheng Zeng
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  2. Shou Zheng Tang
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  3. Qian Hui Xiao
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Correspondence to Wei Sheng Zeng.

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Zeng, W., Tang, S. & Xiao, Q. Calorific values and ash contents of different organs of Masson pine (Pinus massoniana) in southern China. Nat Prec (2012). https://doi.org/10.1038/npre.2012.6750.1

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  • Received: 03 January 2012

  • Accepted: 03 January 2012

  • Published: 03 January 2012

  • DOI: https://doi.org/10.1038/npre.2012.6750.1

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Keywords

  • Gross calorific value
  • Ash-free calorific value
  • Ash content
  • Hypothesis test
  • Regression analysis
  • Pinus massoniana

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