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Sundarbans

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The Sundarbans is the largest mangrove forest ecosystem on Earth. It sits within the vast Ganges Delta. This delta forms where the Ganges, Brahmaputra, and Meghna rivers meet. These rivers flow into the Bay of Bengal. The forest spans two different countries. About 60 percent of the area is in Bangladesh. The remaining 40 percent is in India. It includes the Indian state of West Bengal.

Sunderbans map
Sunderbans map

The landscape is a complex web of water and land. It consists of closed and open mangrove forests. You will also find mudflats, barren land, and agricultural areas. Many tidal streams and channels intersect the region. These waterways connect the many small islands. The tides in this area are very large. Approximately one third of the land disappears every day. The land reappears when the tide comes back in. This constant movement shapes the mudflats.

Ecoregion IM1406
Ecoregion IM1406

The forest is divided into two distinct ecoregions. The first is the Sundarbans mangroves. This area forms the seaward fringe of the delta. It is a salt-tolerant ecosystem. The second ecoregion is the Sundarbans freshwater swamp forests. These forests lie behind the mangroves. The water here is only slightly brackish. During the rainy season, the water becomes quite fresh. This happens because river plumes push salt water away. The freshwater forests sit between the mangroves and the upland plains.

Human history in this region goes back many centuries. Settlement can be traced to the Mauryan era. This was between the 4th and 2nd century BCE. Archaeologists found ruins of an abandoned city in the Baghmara Forest Block. These ruins are linked to a figure named Chand Sadagar. During the Mughal period, rulers leased forest tracts for settlements. In 1757, the British East India Company gained rights over the area. They finished mapping the region in 1764. Systematic forest management began a century later. The first Forest Management Division was established in 1869.

The Sundarbans provides a vital habitat for many species. It supports 453 types of wildlife. This includes 290 bird species and 120 fish species. There are also 42 mammal species and 35 reptile species. The forest is famous for the Bengal tiger. It also hosts many crocodiles, snakes, and chital. The most abundant trees are the sundri and the gewa. The name "Sundarbans" likely comes from the sundri tree. This name means "beautiful forest" in the local language.

This ecosystem serves as a critical natural barrier. The mangroves shield millions of people from danger. They protect residents near Kolkata, Khulna, and the Port of Mongla. The forest helps prevent flooding caused by cyclones. It also protects against tsunamis and soil erosion. However, the forest is under great threat. In 2007, Cyclone Sidr damaged about 40 percent of the area. In 2009, Cyclone Aila caused massive devastation. At least 100,000 people were affected by that storm.

Sundarban police boat
Sundarban police boat

Climate change presents a long-term challenge for the region. Sea levels are rising due to global warming. This causes increased salinity in the water. Reduced freshwater supply also makes the soil saltier. This degradation affects both wildlife and human populations. Some experts suggest "managed retreat" for human populations. They also recommend investing in resilient infrastructure. There is a strong need for mangrove restoration. Protecting this unique forest is essential for the future of the delta.

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🖼️ Images & Media (4)
File:Ecoregion IM1406.svg
Ecoregion IM1406.svg
File:Flooded rice fields in monsoon.jpg
Flooded rice fields in monsoon.jpg
File:Sundarban police boat.jpg
Sundarban police boat.jpg
File:Sunderbans map.png
Sunderbans map.png
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