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Topography of Sumatra
|Archipelago||Greater Sunda Islands|
|Area||473,481 km2 (182,812 sq mi)|
|Highest elevation||3,805 m (12,484 ft)|
|Provinces||Aceh, Bengkulu, Jambi, Lampung, Riau, West Sumatra, South Sumatra, North Sumatra|
|Largest settlement||Medan (pop. 2,097,610)|
|Pop. density||105 /km2 (272 /sq mi)|
|Ethnic groups||Acehnese, Batak, Minangkabau, Malay, Chinese|
Sumatra is an Indonesia island in Southeast Asia that is part of the Sunda Islands. Sumatra has a wide range of plant and animal species but has lost almost 50% of its tropical rainforest in the last 35 years[clarification needed]. Many species are now critically endangered, such as the Sumatran ground cuckoo, the Sumatran tiger, the Sumatran elephant, the Sumatran rhinoceros, and the Sumatran orangutan. Deforestation on the island has also resulted in serious seasonal smoke haze over neighbouring countries, such as the 2013 Southeast Asian haze causing considerable tensions between Indonesia and affected countries Malaysia and Singapore.
Sumatra was known in ancient times by the Sanskrit names of Swarnadwīpa ("Island of Gold") and Swarnabhūmi ("Land of Gold"), because of the gold deposits in the island's highlands. The first mention of the name of Sumatra was in the name of Srivijayan Haji (king) Sumatrabhumi ("King of the land of Sumatra"), who sent an envoy to China in 1017. Arab geographers referred to the island as Lamri (Lamuri, Lambri or Ramni) in the tenth through thirteenth centuries, in reference to a kingdom near modern-day Banda Aceh which was the first landfall for traders. The island is also known by other names namely, Andalas or Percha Island.
Late in the 14th century the name Sumatra became popular in reference to the kingdom of Samudra Pasai, a rising power until replaced by the Sultanate of Aceh. Sultan Alauddin Shah of Aceh, in letters addressed to Queen Elizabeth I of England in 1602, referred to himself as "king of Aceh and Samudra". The word itself is from Sanskrit "Samudra", (समुद्र), meaning "gathering together of waters, sea or ocean". Marco Polo named the kingdom Samara or Samarcha in the late 13th century, while the 14th century traveller Odoric of Pordenone used Sumoltra for Samudra. Subsequent European writers then used similar forms of the name for the entire island.
European writers in the 19th century found that the indigenous inhabitants did not have a name for the island.
Srivijayan influence waned in the 11th century after it was defeated by the Chola Empire of southern India. At the same time, Islam made its way to Sumatra through Arabs and Indian traders in the 6th and 7th centuries AD. By the late 13th century, the monarch of the Samudra kingdom had converted to Islam. Marco Polo visited the island in 1292.
Ibn Battuta visited with the sultan for 15 days, noting the city of Samudra was "a fine, big city with wooden walls and towers," and another 2 months on his return journey. Samudra was succeeded by the powerful Aceh Sultanate, which survived to the 20th century. With the coming of the Dutch, the many Sumatran princely states gradually fell under their control. Aceh, in the north, was the major obstacle, as the Dutch were involved in the long and costly Aceh War (1873–1903).
(Kepulauan Bangka Belitung)
Sumatra is the largest island that is located entirely in Indonesia (after Borneo, which is shared between Indonesia and other countries), the 4th largest island entirely within a country and the sixth-largest island in the world at 473,481 km2 (not including adjacent islands such as the Riau Islands and Bangka Belitung Islands); which is 50% bigger than entire British isles (315,134 km2 (121,674 sq mi)). The longest axis of the island runs approximately 1,790 km (1,110 mi) northwest–southeast, crossing the equator near the centre. At its widest point, the island spans 435 km (270 mi). The interior of the island is dominated by two geographical regions: the Barisan Mountains in the west and swampy plains in the east. Sumatra is the closest Indonesian island to mainland Asia.
To the southeast is Java, separated by the Sunda Strait. To the north is the Malay Peninsula (located on the Asian mainland), separated by the Strait of Malacca. To the east is Borneo, across the Karimata Strait. West of the island is the Indian Ocean.
The Great Sumatran fault (a strike-slip fault), and the Sunda megathrust (a subduction zone), run the entire length of the island along its west coast. On 26 December 2004, the western coast and islands of Sumatra, particularly Aceh province, were struck by a tsunami following the Indian Ocean earthquake. This was the longest earthquake recorded, lasting between 500 and 600 seconds. More than 170,000 Indonesians were killed, primarily in Aceh. Other recent earthquakes to strike Sumatra include the 2005 Nias–Simeulue earthquake and the 2010 Mentawai earthquake and tsunami.
To the east, big rivers carry silt from the mountains, forming the vast lowland interspersed by swamps. Even if mostly unsuitable for farming, the area is currently of great economic importance for Indonesia. It produces oil from both above and below the soil – palm oil and petroleum.
Sumatra is the largest producer of Indonesian coffee. Small-holders grow Arabica coffee (Coffea arabica) in the highlands, while Robusta (Coffea canephora) is found in the lowlands. Arabica coffee from the regions of Gayo, Lintong and Sidikilang is typically processed using the Giling Basah (wet hulling) technique, which gives it a heavy body and low acidity.
By population, Medan is the most populated city in Sumatra. Medan is also the most visited and developed cities in Sumatra.
|City Birthday||Area (km2)|
|1||Medan||North Sumatra||2,109,339||1 July 1590||265.10|
|2||Palembang||South Sumatra||1,452,840||17 June 1683||374.03|
|3||Batam||Riau Islands||1,153,860||18 December 1829||715.0|
|4||Pekanbaru||Riau||903,902||23 June 1784||633.01|
|5||Bandar Lampung||Lampung||879,851||17 June 1682||169.21|
|6||Padang||West Sumatra||833,584||7 August 1669||694.96|
|7||Jambi||Jambi||529,118||17 May 1946||205.00|
|8||Bengkulu||Bengkulu||300,359||18 March 1719||144.52|
|9||Dumai||Riau||254,332||20 April 1999||2,039.35|
|11||Pematang Siantar||North Sumatra||234,885||24 April 1871||60.52|
|12||Banda Aceh||Aceh||224,209||22 April 1205||61.36|
|13||Lubuklinggau||South Sumatra||201,217||17 August 2001||419.80|
Sumatra supports a wide range of vegetation types which are home to a rich variety of species, including 17 endemic genera of plants. Unique species include the Sumatran pine which dominates the Sumatran tropical pine forests of the higher mountainsides in the north of the island and rainforest plants such as Rafflesia arnoldii (the world's largest individual flower), and the titan arum (the world's largest unbranched inflorescence).
The island is home to 201 mammal species and 580 bird species, such as the Sumatran ground cuckoo. There are 9 endemic mammal species on mainland Sumatra and 14 more endemic to the nearby Mentawai Islands. There are about 300 freshwater fish species in Sumatra. There are 93 amphibian species in Sumatra, 21 of which are endemic to Sumatra. (See also: List of amphibians of Sumatra)
The Sumatran tiger, Sumatran rhinoceros, Sumatran elephant, Sumatran ground cuckoo, and Sumatran orangutan are all critically endangered, indicating the highest level of threat to their survival. In October 2008, the Indonesian government announced a plan to protect Sumatra's remaining forests.
The island includes more than 10 national parks, including 3 which are listed as the Tropical Rainforest Heritage of Sumatra World Heritage Site – Gunung Leuser National Park, Kerinci Seblat National Park and Bukit Barisan Selatan National Park. The Berbak National Park is one of three national parks in Indonesia listed as a wetland of international importance under the Ramsar Convention.
Sumatra is not particularly densely populated, with just over 100 people per km2 – more than 50 million people in total. Because of its great extent, it is nonetheless the fifth most populous island in the world.
There are over 52 languages spoken, all of them (except Chinese and Indians) belong to the Nuclear Malayo-Polynesian sub-branch of Malayo-Polynesian which in turn is a branch of the Austronesian language family. Within Nuclear Malayo-Polynesian, they were divided into several sub-branches that is Chamic (which are represented by Acehnese in which its closest relatives are languages spoken by Ethnic Chams in Cambodia and Vietnam), Malayic (Malay, Minangkabau and other closely related languages), Northwest Sumatran (Batak languages, Gayo and others), Lampungic (includes Proper Lampung and Komering) and Bornean (represented by Rejang in which its closest linguistic relatives are Bukar Sadong and Land Dayak spoken in West Kalimantan and Sarawak (Malaysia)). Northwest Sumatran and Lampungic branches are endemic to the island. Like all parts of Indonesia, Indonesian (which was based on Riau Malay) is the official language and the main Lingua franca. Although Sumatra has its own local Lingua franca, variants of Malay like Medan Malay and Palembang Malay are popular in North and South Sumatra, especially in urban areas. Minangkabau (Padang dialect) is popular in West Sumatra, some parts of North Sumatra, Bengkulu, Jambi and Riau (especially in Pekanbaru and areas bordered with West Sumatra) while Acehnese is also used as an inter-ethnic means of communication in some parts of Aceh province.
The majority of people in Sumatra are Muslims (91%), while 8% are Christians, less than 2% are Buddhist and Hindus .
Several unconnected railway networks built during Netherlands East Indies exist in Sumatra, such as the ones connecting Banda Aceh-Lhokseumawe-Besitang-Medan-Tebingtinggi-Pematang Siantar-Rantau Prapat in Northern Sumatra (the Banda Aceh-Besitang section was closed in 1971, but is currently being rebuilt). Padang-Solok-Bukittinggi in West Sumatra, and Bandar Lampung-Palembang-Lahat-Lubuk Linggau in Southern Sumatra.
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