Thailand, country located in the centre of mainland Southeast Asia. Located wholly within the tropics,
Thailand encompasses diverse ecosystems, including the hilly forested areas of the northern frontier,
the fertile rice fields of the central plains, the broad plateau of the northeast, and the rugged coasts
along the narrow southern peninsula.
Until the second half of the 20th century, Thailand was primarily an agricultural country, but since the
1960s increasing numbers of people have moved to Bangkok, the capital, and to other cities. Although the
greater Bangkok metropolitan area remains the preeminent urban centre in the country, there are other
sizable cities, such as Chiang Mai in the north, Nakhon Ratchasima (Khorat), Khon Kaen, and Udon Thani
in the northeast, Pattaya in the southeast, and Hat Yai in the far south.
Land of Thailand
Thailand, which has about the same land area as Spain or France, consists of two broad
geographic areas:
a larger main section in the north and a smaller peninsular extension in the south. The main body of the
country is surrounded by Myanmar (Burma) to the west, Laos to the north and east, Cambodia to the
southeast, and the Gulf of Thailand to the south. Peninsular Thailand stretches southward from the
southwestern corner of the country along the eastern edge of the Malay Peninsula; Myanmar extends along
the western portion of the peninsula as far as the Isthmus of Kra, after which Thailand occupies the
entire peninsula until reaching its southern border with Malaysia at roughly latitude 6° N.
Relief
Thailand’s landscapes vary from low mountains to fertile alluvial plains dotted with rice
paddies to sandy beaches set amid the equatorial latitudes of the Asian monsoons. The country is divided
into five distinct physiographic regions: the folded mountains in the north and west, the Khorat Plateau
in the northeast, the Chao Phraya River basin in the centre, the maritime corner of the central region
in the southeast, and the long, slender peninsular portion in the southwest.
Plant and animal life
Thailand is a country of forests, shrub-studded grasslands, and swampy wetlands dotted with
lotuses and water lilies. Since the mid-20th century, the total land area covered by forests has
declined from more than half to less than one-third. Forest clearing for agriculture (including for tree
plantations), excessive logging, and poor management are the main causes of this decline. Forests
consist largely of such hardwoods as teak and timber- and resin-producing trees of the Dipterocarpaceae
family. As elsewhere in Southeast Asia, bamboo, palms, rattan, and many kinds of ferns are common. Where
forests have been logged and not replanted, a secondary growth of grasses and shrubs has sprung up that
often limits land use for farming. Lotuses and water lilies dot most ponds and swamps throughout the
country.