Everything about The Narmada Valley Dry Deciduous Forests totally explained
The
Narmada Valley dry deciduous forests are a
tropical dry forest ecoregion of central
India. The ecoregion lies mostly in
Madhya Pradesh state, but extends into portions of
Chhattisgarh,
Maharashtra, and
Uttar Pradesh states.
Setting
The Narmada Valley dry deciduous forests cover an area of 169,900 km² (65,600 square miles) of the lower
Narmada River Valley and the surrounding uplands. The Narmada Valley is an east-west flat-bottomed valley, or
graben, that separates two plateaus. The
Vindhya Range forms the northern edge of the Narmada Valley, and separates the Narmada Valley from the
Malwa plateau and
Bundelkhand upland, which lie to the north. The
Satpura Range encloses the Narmada Valley on the south, and separates the Narmada Valley from the
Deccan plateau. The ecoregion includes the western portion of the Satpuras, and also extends to the southeast along the eastern flank of the
Western Ghats range.
Rainfall in the ecoregion is highly seasonal; a seven- to eight-month dry season is followed by the June-to-September
southwest monsoon, which brings 1,200-1,500 mm of rainfall in an average year. Many trees lose their leaves during the long dry season to conserve moisture.
The ecoregion lies between moister forests to the northeast, southeast, and southwest, which receive greater rainfall from the southeast monsoon, and the drier forests and scrublands of the Deccan to the south and Malwa and
Gujarat to the west and northwest. The lowland
Upper Gangetic Plains moist deciduous forests lie to the northeast, on the alluvial plain of the
Ganges River and its tributaries below the eastern Vindhyas and the Bundelkhand upland. The
Chota-Nagpur dry deciduous forests lie on the
Chota Nagpur plateau to the east. The
Eastern highlands moist deciduous forests, which receive more annual moisture from the
Bay of Bengal, lie to the southeast. To the southwest, along the spine of the Western Ghats range, lie the wetter
North Western Ghats moist deciduous forests, which receive more moisture from the southwest monsoon winds off the
Arabian Sea.
To the south, the Deccan Plateau of Maharashtra lies in the
rain shadow of the Western Ghats, and is home to the
Central Deccan Plateau dry deciduous forests of
Vidarbha and the drier
Deccan thorn scrub forests of
Kandesh. The
Kathiarbar-Gir dry deciduous forests cover most of
Malwa to the northwest and the lowlands of
Gujarat to the west.
Flora
The natural vegetation of the region is a three-tiered forest. The forests typically have an upper canopy at 15-25 meters, a 10-15 meter understory of smaller trees and large shrubs, and a 3-4 meter undergrowth.
Teak (Tectona grandis) is the dominant canopy tree, in association with
Coromandel Ebony (Diospyros melanoxylon), Dhaora (Anogeissus latifolia), Lagerstroemia parviflora, Terminalia tomentosa, Lannea coromandelica, Hardwickia binata, and
Boswellia serrata.
riparian areas along the regions rivers and streams, which receive year-round water, are home to moist evergreen forests, whose dominant tree species are
Terminalia arjuna, Syzygium cumini, Syzygium heyneanum, Salix tetrasperma, Homonoia riparia, and
Vitex negundo.
Fauna
The ecoregion is home to 76 species of
mammals, none of which are
endemic, although several of which, including
tiger (Panthera tigris),
gaur (Bos gaurus),
Dhole or Asiatic wild dog
(Cuon alpinus),
sloth bear (Melursus ursinus),
chousingha (Tetracerus quadricornis), and
blackbuck (Antilope cervicapra), are threatened.
The ecoregion is home to 276
bird species, none of which are endemic. Large threatened birds include the
Lesser Florican (Eupodotis indica) and
Indian Bustard (Ardeotis nigriceps).
Conservation
According to the
World Wildlife Fund, about 30% of the ecoregion is covered in relatively intact vegetation. The ecoregion includes some large blocks of habitat in the Vindhya and Satpura ranges. About 5% of the ecoregion lies within protected areas, including
Bandhavgarh,
Panna, and
Sanjay national parks.
Further Information
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