Bukit Tigapuluh National Park (also called Bukit Tiga Puluh and Bukit Tigapulah) - The Thirty Hills - is a 143,223 hectare National Park in eastern Sumatra, consisting primarily of tropical lowland forest, largely in Riau province, with a smaller part of 33,000 ha in Jambi province. It is famous as one of the last refuges of endangered species such as the Sumatran Orangutan, Sumatran tiger, Sumatran elephant, Sumatran rhinoceros and Asian tapir, as well as many endangered bird species. It forms part of the Tesso Nilo Complex biodiversity hotspot. The Park is inhabited by the indigenous peoples of the Orang Rimba and Talang Mamak tribes.
Ecosystem types within the Park include lowland and highland forests, with flora such as Gutta-percha, Shorea, Alstonia scholaris, Dyera costulata, Koompassia excelsa, Rafflesia hasseltii, Daemonorops draco and various kinds of rattan.
According to a 1994 survey Bukit Tigapuluh National Park has 59 species of mammal, 6 species of primate, 198 species of bird, 18 species of bat and various species of butterfly. Mammals include Sumatran Orangutan, Sumatran tiger, Sumatran elephant, Sumatran rhinoceros, Asian tapir, Sun bear, Siamang, Crab-eating Macaque, Sumatran Surili, Sunda Loris, Clouded Leopard, Leopard Cat, Marbled Cat, Malayan Civet, Indian Muntjac, Sumatran Serow and Java Mouse-deer.
Bird species include: Great Argus, Little Green-pigeon, White-rumped Shama, White-bellied Woodpecker, Crested Serpent-eagle, Hill Myna, Helmeted Hornbill, Wrinkled Hornbill, White-winged Wood Duck, Storm's Stork, Garnet Pitta and Grey-breasted Babbler.
The Park also has an important role in protecting the hydrology of the Kuantan Indragiri watershed.
In 1982 the National Conservation Plan highlighted the importance of Bukit Tigapuluh ecosystem and classified the two conservation areas of Bukit Besar Wildlife Sanctuary (200,000 ha) and Seberida Nature Reserve (120,000 ha) as priority I conservation areas. In 1992 the Indonesian Government in cooperation with the Norwegian Government conducted a research to document the biological value of the Bukit Tigapuluh ecosystem. As the result of research, the Bukit Tigapuluh ecosystem with an area of 250,000 ha was recommended to be determined as national park. In 1995 Bukit Tigapuluh was established as national park by Ministerial Decree comprising an area of 127,698 ha. In 2002 its area has been extended to 144,223 ha
The Park has been under consistent threat from illegal logging and palm oil plantations, with two thirds of the park logged. Surrounding buffer zones and wildlife corridors are diminishing, with 30,000 hectares, the largest area of forest remaining outside the Park, released in May 2009 by the Indonesian government for logging, with the licence granted to a joint venture company involving Asia Pulp & Paper/Sinar Mas Group (APP), to clear the largest area of forest outside the Park.
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