A small tracts of higher land occur
in Sylhet, Mymensingh, Chittagong, Cox’s Bazar and Chittagong
Hill Tracts (CHT) regions. The southwestern region consists of a
large number of dead and cut-off rivers. The coastal part of Bangladesh
includes the famous Sundarbans Mangrove Forest. A number of depressed
basins are found in the district of greater Mymensingh and Sylhet
which are inundated by fresh water during the monsoon that gradually
dry out during the dry winter season. These depressed basins are
known as ‘Haor’.
Climate of Bangladesh is sub-tropical
and monsoon rainfall varies from 1200-3500mm. Rice is the major
cereal crop while jute, sugarcane, and tea are the main cash crops.
Other important crops are wheat, tobacco, pulses, vegetable and
tree fruits. Garments, raw and manufactured jute goods, tea, fish,
and, hides and skins are the chief exports.
Bangladesh is noted for its estuarine
environment, yet less than 10% of its total water flow originates
from its own catchments and rest comes from India, Nepal and Bhutan.
Normally, 20% of the country gets flooded during the monsoon period.