Peninsular Southeast Asia is a rugged region traversed by many mountains and drained by great rivers such as the Thanlwin, Ayeyarwady, Chao Phraya, and Mekong. Insular Southeast Asia is made up of numerous volcanic and coral islands. Southeast Asia has a generally tropical rainy climate, with the exception of the northwestern part, which has a humid subtropical climate. The wet monsoon winds are vital for the economic well-being of the region. Tropical forests cover most of the area. Rice is the chief crop of the region; rubber, tea, spices, and coconuts are also important. The region has a great variety of minerals and produces most of the world's tin.
The Columbia Electronic Encyclopedia, 6th ed. Copyright © 2012, Columbia University Press. All rights reserved.