Categories · Geographic Regions
The Indochina Threatened Conifer Region focuses on mainland Southeast Asia and includes Myanmar, Thailand (as far south as the Isthmus of Kra), Lao PDR, Cambodia and Việt Nam. Central physical features of this area include the Annamite Mountains that form the border between Lao PDR and Việt Nam, the Hoang Lien Mountains in northwestern Việt Nam and the extensive karst limestone areas of northern Việt Nam and the adjoining areas of China.
Climates are variable depending on altitude and distance from the coast with some areas experiencing subtropical climates with distinct wet and dry seasons while others are more seasonal. Vegetation types range from subtropical evergreen forests to subalpine bogs and meadows. The conifer flora is very diverse with at least 15 genera and 35 species present. Almost one third are endemic and at least 20 are globally threatened. Notable endemic species include Pinus krempfii and Xanthocyparis vietnamensis. Several taxa are represented by small disjunct subpopulations with the main populations found in other Regions, sometimes at considerable distances. Principal threats in this region include conversion of forests for agriculture, forestry and urbanisation, overexploitation for timber, illegal logging and wildfires.
There are 28 taxa in the category – Indochina:
Abies delavayi subsp. fansipanensis
This subspecies, described in 1997, is restricted to a single mountain in Northern Việt Nam. The main threats are its small population size and restricted distribution which make it potentially susceptible to stochastic events. … Read full species entry >
A widespread species that only ever occurs in small isolated populations. It is currently assessed as Near Threatened due to range wide deforestation.… Read full species entry >
This species was described in 1996 from the karst limestone areas of Hagiang province in northern Việt Nam. Recent field work and molecular research indicates that this taxon is conspecific with Amentotaxus yunnanensis. Consequently it is due to be removed from the IUCN Redlist.… Read full species entry >
Amentotaxus poilanei has only been recorded from a single locality on the Ngoc Linh massif in Kontum province. General deforestation and trans national road building may be threats in the near future.… Read full species entry >
Distributed in China, Loa PDR and Việt Nam where it is threatened by general deforestation and selective logging.… Read full species entry >
A widespread species that has been exploited for timber and resin. Difficulties in estimating the extent of its decline and a lack of information about its staus is some parts of its range have resulted in an assessment of Near Threatened.… Read full species entry >
Calocedrus rupestris was first described in 2008 from Việt Nam: prior to this Calocedrus trees occurring on limestone karst were wrongly identified as Calocedrus macrolepis. In 2011 C. rupestris was discovered in Guangxi. Threats include selective logging for timber, deforestation and forest degradation.… Read full species entry >
Although widely distributed in southeastern Asia it is often targeted for its timber. Futher threats include the conversion of its habitat to agriculture land which has resulted in severe forest fragmentation.… Read full species entry >
A fast growing tree that is disjunctly distributed in Taiwan and along part of the border between Lao PDR and Việt Nam. In the recent past it has been heavily exploited throughout most parts of its range: logging continues in Lao PDR. … Read full species entry >
A critically endangered species restricted to a small area of northern Việt Nam. It is not included on the IUCN Redlist as it is treated as a synonym of Cupresus torulosa on the World Checklist, the IUCN's primary reference source for conifer taxonomy. Research since 2005 indicates that it is a distinct taxon.… Read full species entry >