Abstract and References
Transactions on Science and Technology Vol. 4, No. 4, 513 - 518, 2017

Growth and Yield of Acacia mangium Based on Permanent Sampling Plots in a Plantation

Ismail Jusoh, Joanna Kiung Suteh, Nur Syazni Adam
ABSTRACT
Acacia mangium is a very fast growing species belonging to the family fabaceae. It has been introduced in plantations in Sarawak, Malaysia for its rapid growth and wide range of adaptability. These plantations are anticipated to play the important roles in maintaining the commercial supply of logs thus reducing timber demand from the natural forests. Many plantations now used genetically improved material whose characters and properties have been improved through many years of research. Thus the study of growth and yield are crucial in order to have a more proper planning and management of this forest resource. This study assessed the growth and yield of the two acacias namely Acacia mangium superbulk or Acacia superbulk which is actually a second generation A. mangium and Acacia hybrid. The data obtained from permanent sampling plots (PSPs) of DAIKEN Plantation Sdn. Bhd. Bintulu were analysed to determine their mean annual increment (MAI) and periodic annual increment (PAI) in terms of diameter at breast height (DBH) and volume. Survival rate reduced as age of stand increased. Although DBH and height increased in size but the mean annual height and DBH increments decreased with age. The largest mean DBH recorded for Acacia superbulk and Acacia hybrid PSPs were 23.6 and 25.6 cm, respectively. Mean total height measured for Acacia superbulk and Acacia hybrid PSPs were 32.4 and 30.2 m, respectively. The highest volume mean annual increment was 27.4 m3/ha/yr (6.9 years old) and 26.5 m3/ha/yr (7.4 years old) for Acacia superbulk and Acacia hybrid, respectively. Initially growth in volume increased then began to decrease from seven years. Results of the four PSPs indicated that the maximum growth in volume per ha was attained at approximately seven years old stands.

KEYWORDS: Acacia mangium superbulk; Acacia hybrid; Growth and yield; Mean annual increment (MAI); Periodic annual increment (PAI).
 
Download Full Text PDF

REFERENCES

Adam, N. S., Jusoh, I. & Ishak, N. D. (2012). Growth characteristics of Acacia mangium plantation in Sarawak. Paper presented at the 3rd International Plantation Industry Conference and Exhibition. 5-7 November 2012, Kota Kinabalu, Sabah.

Avery, T.E. & Burkhart. (2002). Forest managements (5th edition). Boston: McGraw-Hill.

Dhamodaran, T. K. & Chacko, K. C. (1999). Growth and wood characteristics of Acacia mangium in Kerala. Research Report No. 174, Kerala Forest Research Institute, Peechi, 60p.

Feldpausch, T. R., Prates-clark, C. C., Fernandes, E. C. M & Riha, S. J. (2007). Secondary forest growth deviation from chronosequence predictions in Central Amazonia. Global Change Biology 13, 967-979.

Gardner, D. (2009). Sarawak Planted Forest (Pulp & Paper) Project, Bintulu Information Memorandum. Singapore: Pöyry Forest Industry Pte Ltd.

Hardiyanto, E.B. & Wicaksono, A. (2008) Inter-rotation site management, stand growth and soil properties in Acacia mangium plantations in South Sumatra, Indonesia. In: Nambiar EKS (ed) Proceedings of seventh workshop: Site management and productivity in tropical plantation forests. 22–26 November, 2004, Piracicaba, Brazil and 6–9 November, 2006, Bogor, Indonesia, pp 107–122

Harwood, C. E. & Nambiar, E. K. S. (2014). Productivity of Acacia and Eucalypt plantation in Southeast Asia. 2. Trends and variations. International Forestry Review, 16(2), 249-260.

Jusoh, I., Zaharin, F. A. & Adam, N. S. (2014). Wood quality of Acacia hybrid and second-generation Acacia Mangium. Bioresources, 9(1), 150-160.

Krisnawati, H., Kallio, M. & Kanninen, M. (2011). Acacia mangium Wild: Ecology, silviculture and productivity. Bogor, Indonesia: Center for International Forestry Research.

Kuan, W.S., Ahmad, H. S., Bauk, R. A., Razali, B. B. & Bujang, A. W. (2014). The essential roles of forest plantations towards sustainability of wood production and wood-based industries in Sarawak. The 17th Malaysian Forestry Conference: A Century of Forest Management: Lessons Learnt and the Way Forward. 11-12 November, 2014, Kota Kinabalu, Sabah.

Ngayop, O. J. (2013). Sustaining the future supply of raw material for the development of timber downstream processing industry in Sarawak. International Conference on Timber. 7-8  June, 2013, Kuching, Sarawak.

Philip, M.S. (1994). Measuring trees and forests (2nd ed.). UK: CAB International.

Sein, C.C. & Mitlöhner, R. (2011) Acacia mangium Willd: ecology and silviculture. Bogor, Indonesia: CIFOR.

Siregar, S. T. H., Nurwahyudi & Mulawarman, K. (2008). Effects of inter-rotation management on site productivity of Acacia mangium in Riau Province, Sumatra, Indonesia. Proceedings of seventh workshop: Site management and productivity in tropical plantation forests. 22–26 November, 2004, Piracicaba, Brazil and 6–9 November, 2006, Bogor, Indonesia, pp 93–106.