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2. Profiles of Tree Species: Asia 269 Alstonia
pneumatophora Apocynaceae
basung, pulai basong, pulai puteh
Distribution Peninsular
Malaysia, Sumatra, Sulawesi, Borneo. Habitat
The species occurs in mixed peat-swamp forest on shallow peat,
often where it overlies sand near the coastal fringe.
It becomes abundant near the mouth of large rivers. Population
status and trends Most Alstonia
species are common and widespread. The do not seem vulnerable to genetic
erosion because they often easily invade severely disturbed places. However
stands heavily depleted in places as a result of deforestation
caused by logging and shifting cultivation (Soerianegara
& Lemmens, 1993). Role of species
in the ecosystem Threats
Logging and shifting cultivation. Utilisation
Pulai is
a lightweight
hardwood used
to make
boxes and
crates, veneers
and plywood,
interior trim, furniture components and carvings. The wood
of the aerial roots is used as a substitute for cork.
The latex is used medicinally and when mixed with oil make glue sticks
(Soerianegara & Lemmens, 1993). Trade
The species is present in trade with other members of the genus.
Pulai,as applied to the genus
as a whole, is one of the six most important export timbers of Indonesia. Export
of sawnwood increased from 50,000m³ in 1987 to 70,000m³
in 1989, raising a price of US$18.5 million. Sarawak
and Sabah also export smaller amounts; Sabah exported 20,000m³
of round logs and 9500m³ of sawnwood in 1992 (Soerianegara & Lemmens,
1993). Peninsular Malaysia reported in 1995 the presence of
2000m³ of sawnwood in exports valued at an
average price of US$312/m³ (ITTO, 1997). It is not thought to be present
in European trade (WCMC, 1991). IUCN
Conservation category LR lc according to Kade
Sidiyasa and the Asia Regional Workshop (1997). Conservation
measures Forest management
and silviculture Alstonia spp.
in general
are fast-growing
but often
show scarce
natural regeneration.
Seedlings are found scattered or in groups particularly at
forest edges and in secondary forest. In most countries
pulai is harvested selectively from natural forest and
there is little experience of silviculture (Soerianegara
& Lemmens, 1993). References
Asia Regional Workshop. 1997. Discussions held during the Third
Regional Workshop for the WCMC/SSC Conservation
and sustainable
management of
trees project, Hanoi,
Viet Nam, 18-21 August 1997. ITTO. 1997. Annual review
and assessment of the world tropical timber situation. 1996. International
Tropical Timber Organization (ITTO). Sidiyasa?????
Soerianegara, I. & Lemmens, R.H.M.J. (Eds.) 1993. Plant
Resources of South-East Asia (PROSEA) 5(1) Timber trees:
major commercial timbers. Pudoc Scientific Publishers,
Wageningen. WCMC. 1991. Provision of data on rare and
threatened tropical timber species. Unpublished report,
prepared under contract to the EC.