Implications of the selective management system on the management of the hill forests of Peninsular Malaysia

Yusuf Hadi, . and Ashari Muktar, . and Shukri Mohamed, . and Kamis Awang, . (1986) Implications of the selective management system on the management of the hill forests of Peninsular Malaysia. [Proceedings Paper]

The paper discusses the two requirements of the Selective Management System SMS as applied to the hill forests of Peninsular Malaysia: the need for economic cuts and the necessity of leaving sufficient advance regeneration in the residual stands to ensure adequate commercial timber volumes at subsequent harvests. Current guidelines expect a minimum harvest of 35 to 40 cubic m/ha every 25 to 30 years by specifying minimum cutting limits of 50 cm and 45 cm for dipterocarp and non-dipterocarp species respectively. The guidelines specify that the residual stands should contain a minimum of 32 sound stems of commercial species in the 30-45 cm dbh class or its equivalence in the whole range of tree sizes in the resid0820ual stands. A stem greater than 45 cm dbh is equivalent to 2 stems in the 30-45 cm dbh class and a stem in the 15-30 cm dbh class has an equivalent value of 1/3. The percentage of the number of Dipterocarp stems greater than 30 cm dbh in the residual stands must be the same as or higher than that in the original stand. Implementation of the SMS is seen as balancing what is to be removed in the immediate harvest and what is to be left for future harvests. The implications on harvest volumes in the current and subsequent harvests and on the continued productivity of the forests are discus

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Abstract

The paper discusses the two requirements of the Selective Management System SMS as applied to the hill forests of Peninsular Malaysia: the need for economic cuts and the necessity of leaving sufficient advance regeneration in the residual stands to ensure adequate commercial timber volumes at subsequent harvests. Current guidelines expect a minimum harvest of 35 to 40 cubic m/ha every 25 to 30 years by specifying minimum cutting limits of 50 cm and 45 cm for dipterocarp and non-dipterocarp species respectively. The guidelines specify that the residual stands should contain a minimum of 32 sound stems of commercial species in the 30-45 cm dbh class or its equivalence in the whole range of tree sizes in the resid0820ual stands. A stem greater than 45 cm dbh is equivalent to 2 stems in the 30-45 cm dbh class and a stem in the 15-30 cm dbh class has an equivalent value of 1/3. The percentage of the number of Dipterocarp stems greater than 30 cm dbh in the residual stands must be the same as or higher than that in the original stand. Implementation of the SMS is seen as balancing what is to be removed in the immediate harvest and what is to be left for future harvests. The implications on harvest volumes in the current and subsequent harvests and on the continued productivity of the forests are discus

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Item Type:	Proceedings Paper
Additional Information:	Available at Perpustakaan Sultan Abdul Samad Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia. SD418.3 T7R336 1986 Call Number.
AGROVOC Term:	Hills
AGROVOC Term:	Forests
AGROVOC Term:	Forest management
AGROVOC Term:	Peninsular Malaysia
Geographical Term:	MALAYSIA
Depositing User:	Ms. Norfaezah Khomsan
Last Modified:	24 Apr 2025 05:25
URI:	http://webagris.upm.edu.my/id/eprint/14545

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