Phong Nha-Ke Bang National Park PDF Print E-mail
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Phong Nha-Ke Bang National Park

Alternative site name(s)
Dong Phong Nha, Phong Nha
Quang Binh
85,754 ha
17o21' – 17o40'N, 105o58' – 106o24'E
From Quang Binh: 40 km
From Hue:
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Topography and hydrology

Phong Nha-Ke Bang National Park is located in western Bo Trach district, close to the international border with Laos. The national park is situated in one of the largest areas of contiguous limestone karst in Indochina, which also includes Hin Namno National Protected Area in Laos. The limestone massif is located in a transitional zone between the northern and central Annamite mountains.

The topography of the national park is characterised by precipitous karst ridges, which rise to elevations of around 400 m. Scattered among these ridges are narrow valleys and pockets of igneous rock formations. Because of the limestone topography, drainage is complex and there are few permanent water courses. There are, however, the Chay, Son and Trooc rivers, all of which are fed by underground streams, which emerge from the En, Vom, Toi and Phong Nha cave systems. All three rivers flow into the Gianh river, which empties into the East Sea.

Biodiversity values

The three most comprehensive biodiversity surveys of Phong Nha-Ke Bang National Park, together with the work of numerous other researchers, have recorded a high diversity of animal and plant species at the site, including a number endemic to the limestone karst massif.

The nature of the terrain at Phong Nha-Ke Bang National Park has restricted encroachment into limestone areas. As a result, the limestone karst is almost entirely forested, apart from steep cliff faces. The only clearance of forest has been in flat valleys within the limestone massif, and in lowland areas bordering it. Natural forest covers the majority of the national park. The most widespread forest type is limestone forest but there are also significant areas of lowland evergreen forest distributed on non-calcareous substrates in valleys among the limestone karst.

The limestone forest ecosystem at Phong Nha-Ke Bang supports a high diversity of plant and animal species. Of perhaps the greatest conservation significance are several species found at the site that are endemic to this part of central Vietnam and Laos. These include Sooty Babbler Stachyris herbeti, a globally near-threatened species that went unrecorded between its discovery in Laos in the 1920s and its rediscovery at the site in 1994. Phong Nha-Ke Bang also supports populations of two endemic primates, Annamese Leaf Monkey Trachypithecus hatinhensis, and an all-black form referred to as Black Leaf Monkey T. ebenus. Scientists recorded a number of globally threatened mammals in the area, including Owston's Civet Hemigalus owstoni and Southern Serow Naemorhedus sumatraensis. In addition, the globally endangered Red-shanked Douc Pygathrix nemaeus has been recorded at the site by a numb





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