Southern Annamites montane rain forests

The Southern Annamites montane rain forests ecoregion (WWF ID:IM0152) covers a region of high bidiversity in the central and southern mountains of the Annamite Range in Vietnam. Terrain ranges from wet lowland forest to evergreen hardwood and conifer montane rain forest.[1][2][3] There is a short dry season centered on January-February, but fog and dew are common throughout the year and support a lush forest character.

Ecoregion: Southern Annamites montane rain forests
"Valley of Love", near Da Lat, Vietnam
Ecoregion territory (in purple)
Ecology
RealmIndomalayan
BiomeTropical and subtropical moist broadleaf forests
Geography
Area46,620 km2 (18,000 sq mi)
CountryVietnam, Laos, Cambodia
Coordinates12°N 108.5°E / 12; 108.5

Location and description
Main article: Annamite Range

There are two general areas. One in the central highlands straddling central Vietnam and southern Laos northeast of the Bolaven Plateau. This northern sector around the Kontum Massif is a complex of granite mountains, and includes Ngọc Linh, the highest peak in Vietnam at 2,598 metres (8,524 ft). The ecoregion's other area is in the south of Vietnam around the Da Lat Plateau and a highest point of 2,200 metres (7,200 ft). The southern sector is built more on weathered basalt, which creates fertile soil for agriculture.[1]

Climate

The climate of the ecoregion is Tropical savanna climate - dry winter (Köppen climate classification (Aw)). This climate is characterized by relatively even temperatures throughout the year, and a pronounced dry season. The driest month has less than 60 mm of precipitation, and is drier than the average month.[4][5] In this ecoregion, annual precipition is 1,800-2,000 mm in the Annamites and in the western regions of the Da Lat Plateau, but can reach over 3,000 mm/year on the eastern edge of the Da Lat Plateau.

Flora and fauna

The region is about 75% forested. Most of this is a closed forest of broadlead evergreens, and some needle-leaf evergreen.[1] Wet evergreen forest cover from 600-900 meters elevation is characterized by species of Fagaceae, Myrtaceae, and Lauraceae. Above 900 meters, the wet hardwood forest supports a wide variety of tree species, generally dependent on the geology and soil of the location. The canopy of about 30 meters is lower at higher elevations and with thinner soils.[1] Epiphytes are a common feature of these forests. Khasi pine (Pinus kesiya) is common throughout the region at elevations up to 1,800 meters.

Protected areas

About 11% of the ecoregion is protected in some official capacity, including:

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References
  1. "Southern Annamites montane rain forests". World Wildlife Federation. Retrieved March 21, 2020.
  2. "Map of Ecoregions 2017". Resolve, using WWF data. Retrieved September 14, 2019.
  3. "Southern Annamites montane rain forests". Digital Observatory for Protected Areas. Retrieved August 1, 2020.
  4. Kottek, M., J. Grieser, C. Beck, B. Rudolf, and F. Rubel, 2006. "World Map of Koppen-Geiger Climate Classification Updated" (PDF). Gebrüder Borntraeger 2006. Retrieved September 14, 2019.CS1 maint: multiple names: authors list (link)
  5. "Dataset - Koppen climate classifications". World Bank. Retrieved September 14, 2019.
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