Classification of second growth forests at tekam forest reserve, pahang and cherul forest reserve, terengganu

A. J. Khairulnajwan, M. Samsudln, M. Y. Safiah, H. Rodziah, S. I. Azhan, Y. Harry, K. Abd Rahman, Wan Juliana Wan Ahmad

Research output: Contribution to journalArticle

Abstract

Currently, the management of forests in Malaysia is facing new challenges as harvesting of production forests experiences a shift from the generally rich, and productive undisturbed forests to logged-over forests. In the very near future, all forest harvesting is expected take place only in logged-over forests. One of the main challenges involves the classification of the forests by stocking classes. This problem does not exist in the management of undisturbed forest as the forests are generally homogenous in terms of size class distribution, and as such, the implementation of pre-felling inventory throughout the whole compartment to assess the growing stock is adequate. However, second growth forests logged more than 20 years ago are more heterogeneous in nature with high variations in size class distribution due to the previous harvesting operations. This characteristic is expected to be more profound in forest types with high clumping features or where harvesting was unevenly implemented, thus creating a patchy nature. To understand this, a study was conducted to assess and classify the second growth forests located in Tekam Forest Reserve in Pahang and Cherul Forest Reserve in Terengganu. A look at the stocking of second growth forests of various ages on both sites indicated that there was no particular trends of forest recovery. Classifying such forests based on years after logging was found to be unveiling. Since the study areas are large and heterogeneous, classification was made based on forest canopy densities. The approach was based on Forest Canopy Density (FCD) Model developed by the International Tropical Timber Organisation (ITTO) and was successfully tested in several tropical forest areas. Landsat 7 ETM+ imageries of the year 2003 were used for the classification. The classification yielded 4 FCD classes, namely Low (1-30%), Medium (31-50%), High (51-70%) and Very High (>70%). It was found that this approach gave a better reflection of the forest stocking classes and was more pragmatic to be implemented in large forest areas. The FCD classes could be used for forest classification although further refinement may be required to enhance forest management at the operational scale.

Original languageEnglish
Pages (from-to)187-195
Number of pages9
JournalMalaysian Forester
Volume73
Issue number2
Publication statusPublished - Jul 2010

Fingerprint

forest reserves
forest canopy
forest management
second growth
forest reserve
logging
tropical wood
felling
timber production
Landsat
forest types
Malaysia
tropical forests
tropical forest

Keywords

  • Forest canopy density
  • Forest classification
  • Logged-over forest

ASJC Scopus subject areas

  • Forestry

Cite this

Khairulnajwan, A. J., Samsudln, M., Safiah, M. Y., Rodziah, H., Azhan, S. I., Harry, Y., ... Wan Ahmad, W. J. (2010). Classification of second growth forests at tekam forest reserve, pahang and cherul forest reserve, terengganu. Malaysian Forester, 73(2), 187-195.

Classification of second growth forests at tekam forest reserve, pahang and cherul forest reserve, terengganu. / Khairulnajwan, A. J.; Samsudln, M.; Safiah, M. Y.; Rodziah, H.; Azhan, S. I.; Harry, Y.; Abd Rahman, K.; Wan Ahmad, Wan Juliana.

In: Malaysian Forester, Vol. 73, No. 2, 07.2010, p. 187-195.

Research output: Contribution to journalArticle

Khairulnajwan, AJ, Samsudln, M, Safiah, MY, Rodziah, H, Azhan, SI, Harry, Y, Abd Rahman, K & Wan Ahmad, WJ 2010, 'Classification of second growth forests at tekam forest reserve, pahang and cherul forest reserve, terengganu', Malaysian Forester, vol. 73, no. 2, pp. 187-195.
Khairulnajwan AJ, Samsudln M, Safiah MY, Rodziah H, Azhan SI, Harry Y et al. Classification of second growth forests at tekam forest reserve, pahang and cherul forest reserve, terengganu. Malaysian Forester. 2010 Jul;73(2):187-195.
Khairulnajwan, A. J. ; Samsudln, M. ; Safiah, M. Y. ; Rodziah, H. ; Azhan, S. I. ; Harry, Y. ; Abd Rahman, K. ; Wan Ahmad, Wan Juliana. / Classification of second growth forests at tekam forest reserve, pahang and cherul forest reserve, terengganu. In: Malaysian Forester. 2010 ; Vol. 73, No. 2. pp. 187-195.
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