Included here are tropical parts of Laos, Vietnam, Cambodia and a small part of Thailand.

South Indochinese Swamp Forest

These forests occur throughout the BioProvince in swampy areas and are also found on wet sandy soil in the Kampong Thom area of Cambodia. In Cambodia Melaleuca cajuputi seems to be the exclusive dominant of many of these forests, while other species include Parinari annamensis. Vast areas of swamp forest also occur in Mekong floodplains. Typical species here include Adina cordifolia, Calophyllum inophyllum, and Sandoricum indicum together with species of Eugenia, Elaeocarpus and Sterculia. Palm species are conspicuous and in some areas almost pure stands of the endemic Livistona cochinchinensis (Arecaceae) occur. Melaleuca cajuputi is also common here particularly in exploited valley bottoms or on humus-rich soils where it forms stands with bushes of Alstonia spathulata, Polybotrya appendiculata and Stenochlaena palustris. On more sandy soils Melaleuca cajuputi forms assemblages with other species such as Ilex godajama. In the immediate hinterland of mangroves forest in areas less affected by brackish water another species of Melaleuca (M. leucadendron) can be found.


Araki, Y., Hirabuki, Y., Powkhy, D., Tsukawaki, S., Rachna, C., Tomita, M. & Suzuki, K. 2007. Influence of large seasonal water level fluctuations and human impact on the vegatation of Lake Tonle Sap, Cambodia. In: Forest Environments in the Mekong River Basin. Springer.

Averyanov, L. V., Phan Ke Loc, Nguyen Tien Hiep & Harder, D. K. 2003. Phytogeographic review of Vietnam and adjacent areas of Eastern Indochina. Komarovia, 3: 1-83.

Baltzer, M. C., Nguyen, Thi Dao & Shore, R G. (Eds.) 2001. Towards a vision for Biodoversity Conservation in the Forests of the Lower Mekong Ecoregion Complex. WWF. Indochina Programme, Hanoi, Vietnam.

Phuong, V. T. 2007. Forest environment of Vietnam: features of forest vegetation and soils. In: Forest Environments in the Mekong River Basin. Springer.

Vidal, J. E. 1979. Outlines of the ecology and vegetation of the Indochinese Peninsula. In: Tropical Botany. Eds. K. Larsen & L. B. Holm-Nielsen. Academic Press.

Vidal, J. E. 1997. Paysages vegetaux et Plantes de la Peninsule indochinoise. Karthala and Agency of Francophony, Paris.

Tani, A., Ito, E., Kanzaki, M., Ohta, S., Khorn, S., Pith, P., Tith, B., Pol, S., & Lim, S. 2007. Principal forest types of three regions of Cambodia: Kampong Thom, Kratie, and Mondolkiri. In: Forest Environments in the Mekong River Basin. Springer.

Top, N., Mizoue, N., Ito, S., Kai, S., Nakao, T. & Ty, S. 2009. Effects of population density on forest structure and species richness and diversity of trees in Kampong Thom Province, Cambodia. Biodiversity and Conservation, 18: 717-738.

Walker, E. H. & Pendleton, R. L. 1953. A survey of the vegetation of southeastern Asia. The Indo-Chinese Province of the Pacific Basin. Proceedings of the 8th Pacific Science Congress, 4: 99-144.

Werger, M. J. A., Nghia, N. H. & Zuidema, P. A. 1967. Demography of threatened tree species in Vietnam. Plant Ecology and Plant Science Group, Utrecht University, Tropenbos International and the Forest Science institute of Vietnam.

Williams, L. 1965. Vegetation of Southeast Asia. Studies of Forest Types. 1963-1965. Agricultural Research Services. U.S. Department of Agriculture.

Dy Phon, P. 1982. Végétation du Cambodge: Endémisme et affinités de sa flore avec les Voisines. C. R. Societe Biogéographie, 58: 135-144.