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Sundarbans East Wildlife Sanctuary
Sundarbans East Wildlife Sanctuary, a protected forest in Bangladesh, extends over an area of 31,227 ha. of mangrove forest. It was established in 1977 under the ''Bangladesh Wildlife (Preservation) (Amendment) Act, 1974'', having previously been a forest reserve. It is the most fertile of the three, non-adjoining wildlife sanctuaries established in the Sundarbans at that time, the others being the Sundarbans West Wildlife Sanctuary and the Sundarbans South Wildlife Sanctuary. The dominant mangrove species is "sundri" (''Heritiera fomes'') from which the Sundarbans region gets its name.
==Geography==
The Sundarbans East Wildlife Sanctuary is in a low-lying area of flat islands interspersed by a network of waterways. It is situated between the Katka and Supati Kals creeks in the Ganges Delta and is bounded to the south by the Bay of Bengal. The Baleshwari River supplies some freshwater but otherwise the waters are saline, being constantly replenished by the rise and fall of the tide. Sands collect near the mouth of the creeks and is blown into dunes and in their lee, silt accumulates. The altitude of the sanctuary varies between above sea level.〔 The soil is more fertile than that of Sundarbans West Wildlife Sanctuary and Sundarbans South Wildlife Sanctuary because a larger quantity of sediment is deposited here by the River Ganges. As the land is raised by accumulating silt, it gets inundated by the tide less often. The soil pH is mostly between 7.0 and 8.0.
Up to of rainfall falls at the coast with most precipitation being during the monsoon, which lasts from June to October. The driest months are December, January and February. In the winter the temperature may fall as low as but rises to a maximum of about in April and May. The mean annual temperature is about . The average relative humidity is high, ranging between 77 and 80%, and peaking during the monsoon at 95%.〔〔 There are four main types of habitat in the sanctuary; mangrove woodlands, grasslands, sandy beaches and areas of transition.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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