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Location Vietnam, Long An
Central coordinates 105o 47.00' East  10o 47.00' North
IBA criteria A1
Area 3,280 ha
Altitude 0 - 2m
Year of IBA assessment 2002

BirdLife Indochina Programme (BirdLife Direct Action Programme)

Site description Lang Sen is situated in the Mekong Delta region, in the area known as the Plain of Reeds. This area , which was originally dominated by seasonally inundated grasslands, has mostly been converted to agricultural land. Lang Sen was proposed a nature reserve by Long An Provincial People's Committee in 1994. The investment plan proposed establishing a 1,124 ha nature reserve, with the name Dong Thap Muoi. A further 1,723 ha were proposed as a bufferzone. Buckton at al. (1999) mention an area of 3,280 ha (and since the birdcounts given here come from this paper the area is given as 3,280 ha in site details).

Key Biodiversity 

Non-bird biodiversity: During a survey of the key wetland sites in the Mekong Delta by BirdLife and the Institute of Ecology and Biological Resources (IEBR), Lang Sen was the only site visited where semi-natural Melaleuca forest occurs along a natural river channel, and, as such is of notable biodiversity value.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Sarus Crane Antigone antigone unknown  2002  present  A1  Vulnerable 


IUCN habitat Habitat detail Extent (% of site)
Artificial - terrestrial Arable land; Forestry & agro-industrial plantations; Rice paddies  100%
Forest   -
Wetlands (inland)   -

Land use

Land-use Extent (% of site)
agriculture 66%
Notes: Permanent Agriculture.
forestry 27%

Protection status The provincial authorities have expressed an interest in establishing a protected area and have produced an investment plan.

Further web sources of information 

Site account from Directory of Important Bird Areas in Vietnam: key sites for conservation (Tordoff 2002)

References Birdlife International and the Forest Inventory and Planning Instutute (2001) Sourcebook of existing and proposed protected areas in Vietnam. Hanoi, Vietnam: BirdLife International Vietnam Programme and the Forest Inventory and Planning Institute.Buckton, S. T., Ngyuyen Cu, Nguyen Duc Tu and Ha Quy Quynh (1999) The conservation of key wetland sites in the Mekong delta. Hanoi: Birdlife International Vietnam programme.

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Recommended citation  BirdLife International (2016) Important Bird and Biodiversity Area factsheet: Lang Sen. Downloaded from on 24/10/2016

To provide new information to update this factsheet or to correct any errors, please email BirdLife