Bangladesh Sundarbans: Present Status of the Environment and Biota

Diversity

Abdul Aziz¹  Ashit Ranjan Paul² 

[1] Department of Botany, University of Dhaka, Dhaka 1000, Bangladesh;Assistant Chief Conservator of Forests, Bangladesh Forest Department, Ban Bhaban, Agargaon, Dhaka 1000, Bangladesh; E-Mail:

关键词: The Sundarbans;    mangroves;    Heritiera fomes;    forests;    salinity;    Ganges River;    Farakka Barrage;   

DOI  :  10.3390/d7030242

来源: mdpi

【 摘 要 】

The Sundarbans is a deltaic mangrove forest, formed about 7000 years ago by the deposition of sediments from the foothills of the Himalayas through the Ganges river system, and is situated southwest of Bangladesh and south of West Bengal, India. However, for the last 40 years, the discharge of sediment-laden freshwater into the Bay of Bengal through the Bangladesh part of the Sundarbans Mangrove Forests (BSMF) has been reduced due to a withdrawal of water during the dry period from the Farakka Barrage in India. The result is two extremes of freshwater discharge at Gorai, the feeding River of the BSMF: a mean minimum monthly discharge varies from 0.00 to 170 m³·s⁻¹ during the dry period with a mean maximum of about 4000 to 8880 m³·s⁻¹ during the wet period. In the BSMF, about 180 km downstream, an additional low discharge results in the creation of a polyhaline environment (a minimum of 194.4 m

【 授权许可】

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