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Malaysia

Malaysia, country of Southeast Asia, lying just north of the Equator, that is composed of two noncontiguous regions: Peninsular Malaysia (Semenanjung Malaysia), also called West Malaysia (Malaysia Barat), which is on the Malay Peninsula, and East Malaysia (Malaysia Timur), which is on the island of Borneo. The Malaysian capital, Kuala Lumpur, lies in the western part of the peninsula, about 25 miles (40 km) from the coast; the administrative centre, Putrajaya, is located about 16 miles (25 km) south of the capital.dfd

Malaysia, a member of the Commonwealth, represents the political marriage of territories that were formerly under British rule. When it was established on September 16, 1963, Malaysia comprised the territories of Malaya (now Peninsular Malaysia), the island of Singapore, and the colonies of Sarawak and Sabah in northern Borneo. In August 1965 Singapore seceded from the federation and became an independent republic.

Land

Peninsular Malaysia occupies most of the southern segment of the Malay Peninsula. To the north it is bordered by Thailand, with which it shares a land boundary of some 300 miles (480 km). To the south, at the tip of the peninsula, is the island republic of Singapore, with which Malaysia is connected by a causeway and also by a separate bridge. To the southwest, across the Strait of Malacca, is the island of Sumatra in Indonesia. East Malaysia consists of the country’s two largest states, Sarawak and Sabah, and is separated from Peninsular Malaysia by some 400 miles (640 km) of the South China Sea. These two states occupy roughly the northern fourth of the large island of Borneo and share a land boundary with the Indonesian portion (Kalimantan) of the island to the south. Surrounded by Sarawak is a small coastal enclave containing the sultanate of Brunei. Of the country’s total area, which includes about 265 square miles (690 square km) of inland water, Peninsular Malaysia constitutes about 40 percent and East Malaysia about 60 percent

Relief

The long, narrow, and rugged Malay Peninsula extends to the south and southwest from Myanmar and Thailand. The Malaysian portion of it is about 500 miles (800 km) long and—at its broadest east-west axis—about 200 miles (320 km) wide. About half of Peninsular Malaysia is covered by granite and other igneous rocks, one-third is covered by stratified rocks older than the granite, and the remainder is covered by alluvium. At least half the land area lies more than 500 feet (150 metres) above sea level.

Peninsular Malaysia is dominated by its mountainous core, which consists of a number of roughly parallel mountain ranges aligned north-south. The most prominent of these is the Main Range, which is about 300 miles (480 km) long and has peaks exceeding 7,000 feet (2,100 metres). Karst landscapes—limestone hills with characteristically steep whitish gray sides, stunted vegetation, caves created by the dissolving action of water, and subterranean passages—are distinctive landmarks in central and northern Peninsular Malaysia. Bordering the mountainous core are the coastal lowlands, 10 to 50 miles (15 to 80 km) wide along the west coast of the peninsula but narrower and discontinuous along the east coast.

East Malaysia is an elongated strip of land approximately 700 miles (1,125 km) long with a maximum width of about 170 miles (275 km). The coastline of 1,400 miles (2,250 km) is paralleled inland by a 900-mile (l,450-km) boundary with Kalimantan. For most of its length, the relief consists of three topographic features. The first is the flat coastal plain. In Sarawak, where the coastline is regular, the plain averages 20 to 40 miles (30 to 60 km) in width, while in Sabah, where the coastline is rugged and deeply indented, it is only 10 to 20 miles (15 to 30 km) wide. Inland from the coastal plain is the second topographic feature, the hill-and-valley region. Elevations there generally are less than 1,000 feet (300 metres), but isolated groups of hills reach heights of 2,500 feet (750 metres) or more. The terrain in this region is usually irregular, with steep-sided hills and narrow valleys. The third topographic feature is the mountainous backbone that forms the divide between East Malaysia and Kalimantan. This region, which is higher and nearer to the coast in Sabah than in Sarawak, is composed of an eroded and ill-defined complex of plateaus, ravines, gorges, and mountain ranges. Most of the summits of the ranges are between 4,000 and 7,000 feet (1,200 and 2,100 metres). Mount Kinabalu towers above this mountain complex; at 13,455 feet (4,101 metres), it is the highest peak in Malaysia and in the Southeast Asian archipelago as a whole.

Drainage

Peninsular Malaysia is drained by an intricate system of rivers and streams. The longest river—the Pahang—is only 270 miles (434 km) long. Streams flow year-round because of the constant rains, but the volume of water transported fluctuates with the localized and torrential nature of the rainfall. Prolonged rains often cause floods, especially in areas where the natural regimes of the rivers have been disrupted by uncontrolled mining or agricultural activities.

As in Peninsular Malaysia, the drainage pattern of East Malaysia is set by the interior highlands, which also form the watershed between Malaysia and Indonesia. The rivers, also perennial because of the year-round rainfall, form a dense network covering the entire region. The longest river in Sarawak, the Rajang, is about 350 miles (563 km) long and is navigable by shallow-draft boats for about 150 miles (240 km) from its mouth; its counterpart in Sabah, the Kinabatangan, is of comparable length but is navigable only for about 120 miles (190 km) from its mouth. The rivers provide a means of communication between the coast and the interior, and historically, most settlement has taken place along the rivers.

Soils

The soils of both portions of Malaysia have been exposed for a long period of time to intense tropical weathering, with the result that most of their plant nutrients have been leached out. Soils typically are strongly acidic and coarse-textured and have low amounts of organic matter. Any organic matter is rapidly oxidized when exposed to weathering, and the soils consequently become even poorer. Soil erosion is always a danger on sloping ground, where such preventive measures as building contour embankments or planting protective cover crops are required.

Only a small proportion of the soils of Peninsular Malaysia is fertile, necessitating regular application of fertilizer to sustain crop yields. Generally, soil conditions in Sarawak and Sabah do not differ greatly from those on the peninsula. Of these three regions, only Sabah has appreciable areas of fertile soils. These are found in the southeastern coastal areas, where the parent substance from which the soil is formed is composed of chemically basic volcanic materials.

Climate of Malaysia

Both peninsular and insular Malaysia lie in the same tropical latitudes and are affected by similar airstreams. They have high temperatures and humidities, heavy rainfall, and a climatic year patterned around the northeast and southwest monsoons. The four seasons of the climatic year are the northeast monsoon (from November or December until March), the first intermonsoonal period (March to April or May), the southwest monsoon (May or June to September or early October), and the second intermonsoonal period (October to November). The onset and retreat of the two monsoons are not sharply defined.

Although Malaysia has an equatorial climate, the narrowness and topographic configuration of each portion—central mountainous cores with flat, flanking coastal plains—facilitate the inland penetration of maritime climatic influences. The monsoons further modify the climate. The northeast monsoon brings heavy rain and rough seas to the exposed coasts of southwestern Sarawak and northern and northeastern Sabah, and it sometimes causes flooding in the eastern part of the peninsula. The southwest monsoon affects mainly the southwestern coastal belt of Sabah, where flooding is common. Neither peninsular nor insular Malaysia is in the tropical cyclone (typhoon) belt, but their coasts occasionally are subject to the heavy rainstorms associated with squalls.

Temperatures are uniformly high throughout the year. On the peninsula, they average about 80 °F (27 °C) in most lowland areas. In coastal areas in East Malaysia, minimum temperatures range from the low to mid-70s F (about 23 °C), and maximum temperatures hover around 90 °F (32 °C); temperatures are lower in the interior highland regions. The mean annual rainfall on the peninsula is approximately 100 inches (2,540 mm); the driest location, Kuala Kelawang (in the district of Jelebu), near Kuala Lumpur, receives about 65 inches (1,650 mm) of rain per year, while the wettest, Maxwell’s Hill, northwest of Ipoh, receives some 200 inches (5,000 mm) annually. Mean annual precipitation in Sabah varies from about 80 to 140 inches (2,030 to 3,560 mm), while most parts of Sarawak receive 120 inches (3,050 mm) or more per year.

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Malaysia, country of Southeast Asia, lying just north of the Equator, that is composed of two noncontiguous regions: Peninsular Malaysia (Semenanjung Malaysia), also called West Malaysia (Malaysia Barat), which is on the Malay Peninsula, and East Malaysia (Malaysia Timur), which is on the island of Borneo. The Malaysian capital, Kuala Lumpur, lies in the western part of the peninsula, about 25 miles (40 km) from the coast; the administrative centre, Putrajaya, is located about 16 miles (25 km) south of the capital.dfd

Malaysia, a member of the Commonwealth, represents the political marriage of territories that were formerly under British rule. When it was established on September 16, 1963, Malaysia comprised the territories of Malaya (now Peninsular Malaysia), the island of Singapore, and the colonies of Sarawak and Sabah in northern Borneo. In August 1965 Singapore seceded from the federation and became an independent republic.

Land

Peninsular Malaysia occupies most of the southern segment of the Malay Peninsula. To the north it is bordered by Thailand, with which it shares a land boundary of some 300 miles (480 km). To the south, at the tip of the peninsula, is the island republic of Singapore, with which Malaysia is connected by a causeway and also by a separate bridge. To the southwest, across the Strait of Malacca, is the island of Sumatra in Indonesia. East Malaysia consists of the country’s two largest states, Sarawak and Sabah, and is separated from Peninsular Malaysia by some 400 miles (640 km) of the South China Sea. These two states occupy roughly the northern fourth of the large island of Borneo and share a land boundary with the Indonesian portion (Kalimantan) of the island to the south. Surrounded by Sarawak is a small coastal enclave containing the sultanate of Brunei. Of the country’s total area, which includes about 265 square miles (690 square km) of inland water, Peninsular Malaysia constitutes about 40 percent and East Malaysia about 60 percent

Relief

The long, narrow, and rugged Malay Peninsula extends to the south and southwest from Myanmar and Thailand. The Malaysian portion of it is about 500 miles (800 km) long and—at its broadest east-west axis—about 200 miles (320 km) wide. About half of Peninsular Malaysia is covered by granite and other igneous rocks, one-third is covered by stratified rocks older than the granite, and the remainder is covered by alluvium. At least half the land area lies more than 500 feet (150 metres) above sea level.

Peninsular Malaysia is dominated by its mountainous core, which consists of a number of roughly parallel mountain ranges aligned north-south. The most prominent of these is the Main Range, which is about 300 miles (480 km) long and has peaks exceeding 7,000 feet (2,100 metres). Karst landscapes—limestone hills with characteristically steep whitish gray sides, stunted vegetation, caves created by the dissolving action of water, and subterranean passages—are distinctive landmarks in central and northern Peninsular Malaysia. Bordering the mountainous core are the coastal lowlands, 10 to 50 miles (15 to 80 km) wide along the west coast of the peninsula but narrower and discontinuous along the east coast.

East Malaysia is an elongated strip of land approximately 700 miles (1,125 km) long with a maximum width of about 170 miles (275 km). The coastline of 1,400 miles (2,250 km) is paralleled inland by a 900-mile (l,450-km) boundary with Kalimantan. For most of its length, the relief consists of three topographic features. The first is the flat coastal plain. In Sarawak, where the coastline is regular, the plain averages 20 to 40 miles (30 to 60 km) in width, while in Sabah, where the coastline is rugged and deeply indented, it is only 10 to 20 miles (15 to 30 km) wide. Inland from the coastal plain is the second topographic feature, the hill-and-valley region. Elevations there generally are less than 1,000 feet (300 metres), but isolated groups of hills reach heights of 2,500 feet (750 metres) or more. The terrain in this region is usually irregular, with steep-sided hills and narrow valleys. The third topographic feature is the mountainous backbone that forms the divide between East Malaysia and Kalimantan. This region, which is higher and nearer to the coast in Sabah than in Sarawak, is composed of an eroded and ill-defined complex of plateaus, ravines, gorges, and mountain ranges. Most of the summits of the ranges are between 4,000 and 7,000 feet (1,200 and 2,100 metres). Mount Kinabalu towers above this mountain complex; at 13,455 feet (4,101 metres), it is the highest peak in Malaysia and in the Southeast Asian archipelago as a whole.

Drainage

Peninsular Malaysia is drained by an intricate system of rivers and streams. The longest river—the Pahang—is only 270 miles (434 km) long. Streams flow year-round because of the constant rains, but the volume of water transported fluctuates with the localized and torrential nature of the rainfall. Prolonged rains often cause floods, especially in areas where the natural regimes of the rivers have been disrupted by uncontrolled mining or agricultural activities.

As in Peninsular Malaysia, the drainage pattern of East Malaysia is set by the interior highlands, which also form the watershed between Malaysia and Indonesia. The rivers, also perennial because of the year-round rainfall, form a dense network covering the entire region. The longest river in Sarawak, the Rajang, is about 350 miles (563 km) long and is navigable by shallow-draft boats for about 150 miles (240 km) from its mouth; its counterpart in Sabah, the Kinabatangan, is of comparable length but is navigable only for about 120 miles (190 km) from its mouth. The rivers provide a means of communication between the coast and the interior, and historically, most settlement has taken place along the rivers.

Soils

The soils of both portions of Malaysia have been exposed for a long period of time to intense tropical weathering, with the result that most of their plant nutrients have been leached out. Soils typically are strongly acidic and coarse-textured and have low amounts of organic matter. Any organic matter is rapidly oxidized when exposed to weathering, and the soils consequently become even poorer. Soil erosion is always a danger on sloping ground, where such preventive measures as building contour embankments or planting protective cover crops are required.

Only a small proportion of the soils of Peninsular Malaysia is fertile, necessitating regular application of fertilizer to sustain crop yields. Generally, soil conditions in Sarawak and Sabah do not differ greatly from those on the peninsula. Of these three regions, only Sabah has appreciable areas of fertile soils. These are found in the southeastern coastal areas, where the parent substance from which the soil is formed is composed of chemically basic volcanic materials.

Climate of Malaysia

Both peninsular and insular Malaysia lie in the same tropical latitudes and are affected by similar airstreams. They have high temperatures and humidities, heavy rainfall, and a climatic year patterned around the northeast and southwest monsoons. The four seasons of the climatic year are the northeast monsoon (from November or December until March), the first intermonsoonal period (March to April or May), the southwest monsoon (May or June to September or early October), and the second intermonsoonal period (October to November). The onset and retreat of the two monsoons are not sharply defined.

Although Malaysia has an equatorial climate, the narrowness and topographic configuration of each portion—central mountainous cores with flat, flanking coastal plains—facilitate the inland penetration of maritime climatic influences. The monsoons further modify the climate. The northeast monsoon brings heavy rain and rough seas to the exposed coasts of southwestern Sarawak and northern and northeastern Sabah, and it sometimes causes flooding in the eastern part of the peninsula. The southwest monsoon affects mainly the southwestern coastal belt of Sabah, where flooding is common. Neither peninsular nor insular Malaysia is in the tropical cyclone (typhoon) belt, but their coasts occasionally are subject to the heavy rainstorms associated with squalls.

Temperatures are uniformly high throughout the year. On the peninsula, they average about 80 °F (27 °C) in most lowland areas. In coastal areas in East Malaysia, minimum temperatures range from the low to mid-70s F (about 23 °C), and maximum temperatures hover around 90 °F (32 °C); temperatures are lower in the interior highland regions. The mean annual rainfall on the peninsula is approximately 100 inches (2,540 mm); the driest location, Kuala Kelawang (in the district of Jelebu), near Kuala Lumpur, receives about 65 inches (1,650 mm) of rain per year, while the wettest, Maxwell’s Hill, northwest of Ipoh, receives some 200 inches (5,000 mm) annually. Mean annual precipitation in Sabah varies from about 80 to 140 inches (2,030 to 3,560 mm), while most parts of Sarawak receive 120 inches (3,050 mm) or more per year.