Allometric Biomass Equations, Biomass Expansion Factors and Root-to-shoot Ratios of Planted <i>Acacia mangium</i> Willd. Forests in West Java, Indonesia

• Miyakuni Kiyoshi

  Registered expert for Japan International Forestry Promotion and Cooperation Center (JIFPRO)

• Heriansyah Ika

  Forest and Nature Conservation Research and Development Center

• Heriyanto N. M.

  Forest and Nature Conservation Research and Development Center

• Kiyono Yoshiyuki

  Department of Forest Vegetation, Forestry and Forest Products Research Institute

Abstract

We present two models of log-linear equations for biomass estimation in planted stands of 3- to 10-year-old Acacia mangium Willd. trees, using destructive sampling data of 59 trees in West Java, Indonesia. The log-linear equations include parameters for individual leaf, branch, stem, aboveground, belowground (root), and total biomass. Average annual increments of stand-level biomass were estimated at 7.77 to 10.09t ha^-1 y^-1 (model A) and at 7.91 to 10.27t ha^-1 y^-1 (model B), with the largest values in the 5-year-old stand. Following the methodology presented by IPCC National Greenhouse Gas Inventories Programme, we calculated basic wood density (D), biomass expansion factors (BEF), and root-to-shoot ratios (R) of the study stands. The value of D increased significantly as stand age increased from 3 to 8 years, but did not significantly differ between 8- and 10-year-old stands. The value of BEF did not differ among the 3- to 8-year-old stands (average 1.332) and decreased to 1.180 in the 10-year-old stand. The values of R increased significantly with stand age, from 0.157 to 0.190. The BEF values of A. mangium in this study were smaller than the default values for the tropical broad-leaf forest type (dbh>10cm) given by IPCC (mean, 3.4; range, 2.0-9.0). Because many factors may affect the parameter values of log-linear equations and D, BEF, and R for biomass estimation, the equations and values provided in this study are only applicable to A. mangium forests growing under comparable climatic, stand age, forest management conditions.

Journal

• Journal of Forest Planning

  Journal of Forest Planning 10 (2), 69-76, 2004

  Japan Society of Forest Planning

Keywords

• belowground biomass
• biomass expansion factor
• Clean Development Mechanism
• root biomass
• root-to-shoot ratio

Details

• CRID: 1390001204439102592
• NII Article ID: 110009357679
• NII Book ID: AA11059168
• DOI: 10.20659/jfp.10.2_69
• ISSN: 21898316
• ISSN: 1341562X
• Web Site: https://www.jstage.jst.go.jp/article/jfp/10/2/10_KJ00007911299/_pdf
• Text Lang: en
• Data Source:
  • JaLC
  • Crossref
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed