This study describes the establishment of a compatible volume estimation model for Acacia mangium Willd on the basis of 279 felled sample trees collected from the A. mangium plantation stands in South Sumatra, Indonesia. The model comprises of a total volume model and a stem taper model, which is compatible in the sense of the total volume obtained by integration of the taper model being equal to that computed by the total volume model. Several well-known total volume functions were evaluated including constant form factor, combined variable, generalized combine variable, logarithmic, generalized logarithmic and Honer transformed variables. A logarithmic model was determined to be the best and was then used as the basis for deriving the taper model. Appropriate statistical procedures were used in model fitting to account for the problems of heteroscedasticity and autocorrelation that are associated with the construction of  volume and taper functions. The simultaneous fitting method of the Seemingly Unrelated Regression (SUR) improved the parameter estimates and goodness-of-fit statistics while ensuring numeric consistency among the component models and reducing the total squared error obtained by an independent fitting method. The developed model can be used to estimate total stem volume, merchantable volume to any merchantability diameter limit at any height, and (possibly) height of any diameter based on only easily measurable parameters such as diameter at breast height and total tree height for the species analysed.
| Published by | Badan Penelitian dan Penegembangan Kehutanan |
| Journal Name | Indonesian Journal of Forestry Research |
| Contact Phone | - |
| Contact Name | Tutik Sriyati |
| Contact Email | ijfr.forda@gmail.com |
| Location | Kota bogor, Jawa barat INDONESIA |
| Website | IJFR| http://ejournal.forda-mof.org/ejournal-litbang/index.php/IJFR| |
| ISSN | ISSN : 23557079, EISSN : 24068195, DOI : -, |
| Core Subject | Agriculture, |
| Meta Subject | Agriculture, Biological Sciences & Forestry, |
| Meta Desc | Indonesian Journal of Forestry Research (IJFR) was first published as Journal of Forestry Research (JFR) on November 2004. The last issue of JFR was Volume 10 Number 2 published on December 2013. The Journal of Forestry Research has been accredited by the Indonesian Institute of Sciences since 2008. The last accreditation was on 21 June 2013 (accredition number: 538/AU3/P2MI-LIPI/06/2013) which will be valid until 2016. IJFR will be issued in one volume every year including two issues which will be delivered every April and October. This journal is published by Forestry Research and Development Agency (FORDA), Indonesia. |
| Penulis | Krisnawati, Haruni |
| Publisher Article | Secretariat of Forestry Research and Development Agency |
| Subtitle Article | Indonesian Journal of Forestry Research Vol 3, No 1 (2016): Indonesian Journal of Forestry Research |
| Scholar Google | http://scholar.google.com/scholar?q=%2Bintitle%3A&… |
| View Article | http://ejournal.forda-mof.org/… |
| DOI | https://doi.org/10.20886/ijfr.2016.… |
| DOI Number | DOI: 10.20886/ijfr.2016.3.1.49-64 |
| Download Article [1] | http://ejournal.forda-mof.org/ejournal-l… |
| Download Article [2] |
Informasi yang terkait dengan A COMPATIBLE ESTIMATION MODEL OF STEM VOLUME AND TAPER FOR Acacia mangium Willd. PLANTATIONS
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