Vientiane Prefecture topographic map

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Xiangkhouang province covers an area of 15,880 square kilometres (6,130 sq mi) and is mountainous. Apart from floodplains, the largest area of level land in the country is on the province's Xiangkhoang Plateau. The plateau is characterized by rolling hills and grassland whose elevation averages 1,300 metres…

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The Bokeo Nature Reserve was created as protection for the black crested gibbon (also known as "black-cheeked gibbon"), discovered in 1997, previously thought to be extinct. Elephants and wild water buffalo migrate through the reserve; bears and tigers are also present. The protected area, is characterized by…

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The 60,070 hectare Phou Louey Massif Important Bird Area (IBA) is in the Nam Et-Phou Louey National Biodiversity Conservation Area (NBCA). The IBA is in the provinces of Luang Prabang and Houaphanh. It sits at an elevation of 700–1,800 metres (2,300–5,900 ft). The habitat contains mixed deciduous forest,…

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The Mekong Channel from Phou Xiang Thong to Siphandon Important Bird Area (IBA) is 34,200 ha (85,000 acres) in size. A portion of the IBA (10,000 hectares) overlaps with the 120,000 ha (300,000 acres) Phou Xieng Thong National Protected Area. The IBA encompasses two provinces, Champasak and Salavan. The IBA is…

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Xiangkhouang province covers an area of 15,880 square kilometres (6,130 sq mi) and is mountainous. Apart from floodplains, the largest area of level land in the country is on the province's Xiangkhoang Plateau. The plateau is characterized by rolling hills and grassland whose elevation averages 1,300 metres…

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The Dakchung Plateau is an Important Bird Area (IBA). It is 5,140 ha in size, and at an elevation of 800–1,400 metres (2,600–4,600 ft). The habitat is characterized as pine woodland, grassland, degraded semi-evergreen forest, dry evergreen forest, marshy land, and tall grasses areas. Of the avifauna, the…

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Bolikhamsai province has a rugged terrain, with large boulders and streams. Its elevation ranges from 140–1,588 metres (459–5,210 ft). The principal river is the Nam Kading, meaning 'water like a bell', a tributary of the Mekong; its catchment covers about 92% of the provincial area. The other main rivers…

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Its origin is volcanic with mountains and wide valleys. The central part of the province is located on the Bolaven Plateau, which is a key agricultural area with Arabica coffee as the dominant cash crop and other horticultural products which are exported. The western part of Salavan province is delimited by…

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The Nam Ha National Biodiversity Conservation Area (NBCA) has dense forest covering 90% of the area. May to September are the rainy months with average annual rainfall of 1,256 millimetres (49.4 in). December to February are the winter months with temperatures touching as low as 5 °C (41 °F). Heavy fog is…

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The elevation of the Tibetan Plateau during the Tertiary period was an important factor in the genesis of the south-west monsoon, which is the dominant climatic control influencing the hydrology of the Mekong Basin. Understanding the nature and timing of the elevation of Tibet (and the Central Highlands of…

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