Malwa: Encyclopedia II - Malwa - Geography

Malwa - Geography

The Malwa region occupies a plateau in western Madhya Pradesh and south-eastern Rajasthan (between 21°10′N 73°45′E and 25°10′N 79°14′E) ^[7], with Gujarat in the west. To the south and east is the Vindhya Range and to the north is the Bundelkhand upland. The plateau is an extension of the Deccan Traps, formed between 60 and 68 million years ago^[8][9] at the end of the Cretaceous period. In this region the main classes of soil are balck, brown and bhatori (stony) soil. The volcanic, clay-like soil of the region owes its black colour to the high iron content of the basalt from which it formed. The soil requires less irrigation because of its high capacity for moisture retention. The other two soil types are lighter and have a higher proportion of sand.

The average elevation of the plateau is 500 m. Some of the peaks over 800 m high are at Sigar (881 m), Janapav (854 m) and Ghajari (810 m). The plateau generally slopes towards the north. The western part of the region is drained by the Mahi river, while the Chambal river drains the central part, and the Betwa river and the headwaters of the Dhasan and Ken rivers drain the east. The Shipra River is of historical importance because of the Simhasth mela, held every 12 years. Other notable rivers are Parbati, Gambhir and Choti Kali Sindh. Malwa's elevation gives it a mild, pleasant climate; a cool morning wind, the karaman, and an evening breeze, the Shab-e-Malwa, make the summers less harsh.

The year is popularly divided into three seasons: summer, the rains, and winter. Summers extends over the months of Chaitra to Jyestha (mid-March to mid-May). The average daily temperature during the summer months is 35 °C, which typically rises to around 40 °C on a few days. The rainy season starts with the first showers of Aashaadha (mid-June) and extends to the middle of Ashvin (September). Most of the rain falls during the southwest monsoon spell, and ranges from about 100 cm in the west to about 165 cm in the east. Indore and the immediately surrounding areas receive an average of 140 cm of rainfall a year. The growing period lasts from 90 to 150 days, during which the average daily temperature is below 30 °C, but seldom falls below 20 °C. Winter is the longest of the three seasons, extending for about five months (mid-Ashvin to Phalgun, i.e., October to mid-March). The average daily temperature ranges from 15 °C to 20 °C, though on some nights it can fall as low as 7 °C. Some cultivators believe that an occasional winter shower during the months of Pausha and Maagha—known as Mawta—is helpful to the early summer wheat and germ crops.^[10]

The region is part of the Kathiawar-Gir dry deciduous forests ecoregion.

Vegetation: The natural vegetation is tropical dry forest, with scattered teak (Tectona grandis) forests. The main trees are Butea, Bombax, Anogeissus, Acacia, Buchanamia and Boswellia. The shrubs or small trees include species of Grewia, Ziziphus mauritiana, Casearia, Prosopis, Capparis, Woodfordia, Phyllanthus, and Carissa.

Wildlife: Sambhar (Cervus unicolor), Blackbuck (Antilope cervicapra), and Chinkara (Gazella bennettii) are some common ungulates^[11]. During the last century, deforestation has happened at a fast rate, leading to environmental problems such as acute water scarcity and the danger that the region is being desertified.

See also: Geography of India

Adapted from the Wikipedia article "Geography", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki