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2. Profiles of Tree Species: Asia 259 Agathis
borneensis Araucariaceae
bembueng, bindang, damar minyak, damar pilau,
hedje, tambunan Distribution
Brunei,
Indonesia (Kalimantan, Sumatra), Malaysia (Peninsular Malaysia, Sabah,
Sarawak). Agathis
dammara and A.
philippensis are treated as separate species.
Habitat A
common species of tropical moist mixed closed forest up to 2200m. Pure stands
occur on low-lying sandy peat soil in Borneo and Peninsular
Malaysia. Population Status and Trends
Large stands of trees have been completely extracted through
much of its range, most notably in Kalimantan. The stands
of 100-400m³/ha volume in South Kalimantan have
been seriously depleted (Soerianegara & Lemmens, 1993). Exploitation
continues to be heavy and regeneration in residual stands is
insufficient to replace lost populations. In the past
the tree has also been destructively expoited for copal. Role
of species in the Ecosystem Threats
Overexploitation, clear-felling/logging of the habitat.
Utilisation Agathis
species are
distinctive, highly-sought
and exploited
for their
valuable timber.
It is excellent for joinery, boat building, construction, panelling,
turnery, utensils. It also makes a good veneer, pulp
and paper, charcoal and activated carbon. The resin or Manila
copal is used in varnishes. Heavy exploitation had reduced the economic
importance of the genus. Trade
Agathis spp.
are reported
in exports
from Indonesia
and Malaysia.
Indonesia exported
760,000m³ in the form of round logs in 1973. In 1987 and
1988 67,000m³ and 83,000m³ of sawnwood was
exported at a value of US$20.1 million and US$22.2 million
respectively. Sarawak exported 22,000m³ in log form in 1987 and Sabah
exported 130,000m³. By the 1990s sawnwood had taken over
in the market in Peninsular Malaysia. The largest export
volume of 8300m ³ in round wood is reported in
1967. Sawnwood exports increased from 3250m³ in 1973 to 3300m³in 1986
and 6000m³ in 1989 and decreased again to 5500m³
and 3500m³in 1990 and 1992 respectively (Soerianegara
& Lemmens, 1993). The peak in the world production
of copal occurred in the earlier part of the century, the
large part coming from Indonesia. 18,000t was produced in 1926 and in 1987
Indonesia was still exporting 2650t at a value of US$650,000
in 1987 but production has declined since then (Soerianegara
& Lemmens, 1993). IUCN Conservation
category VU A1acd according to the SSC Conifer
Specialist Group (Farjon et al.,
1996). Conservation Measures
Important populations are held in Badas Forest Reserve in Brunei,
Gunung Palung Nature Reserve in Kalimantan, Bukit Barisan
Selatan National Park in Sumatra and Taman Negara National
Park in Peninsular Malaysia. Forest
Management and Silviculture It is planted as
a plantation tree and in enrichment planting (Soerianegara & Lemmens,
1993). Regeneration is only successful under a closed canopy (Lamprecht,
1989). Data from A.
dammara plantations indicate
that the usual rotation for pulpwood production in plantations
is 20 years. More time is needed for timber production.
Annual wood production is 23-32m³/ha in 30years and 22-28m³ in
50years. A total yield of 570m³/ha may be obtained after
40 years. References
de Laubenfels, D.J. 1988. Coniferales. Flora Malesiana series
I - spermatophyta, flowering plants 10(3) Farjon,
Aljos. et al.
1996. Discussions of the SSC Conifer Specialist Group involving the
application of revised IUCN red list categories to conifer species. Kostermans,
A. 1990. Comments from Kostermans on a draft list of tropical timbers for
Indonesia. Lamprecht, H. 1989. Silviculture in the tropics:
tropical forest ecosystems and their tree species; possibilities
and methods for their long-term utilization. Dt. Ges. für Techn.
Zusammenarbeit (GTZ). GmbH, Eschborn. Soerianegara,
I. & R.H.M.J. Lemmens (eds.). 1993. Plant Resources of South-East Asia
5(1). Timber trees: Major commercial timbers. Wageningen: Pudoc Scientific
Publishers. 610 pp. Whitmore, T.C. Utilization, potential
and conservation of Agathis, a genus of tropical
Asian conifers.