Thar Desert natural vegetation of this dry area is classed as Northwestern thorn scrub forest occurring in small clumps scattered more or less openly. Density and size of patches increase from west to east following the increase in rainfall. The natural vegetation of the Thar Desert is composed of the following tree, shrub and herb species: The endemic floral species include "Calligonum polygonoides", "Prosopis cineraria", "Acacia nilotica", "Tamarix aphylla", "Cenchrus biflorus". The Thar Desert is the most widely populated desert in the world, with a population density of 83 people per km. In India, the inhabitants comprise Hindus, Muslims, and Sikhs. In
Thar Desert Pakistan, inhabitants also include both Muslims and Hindus. About 40% of the total population of Rajasthan live in the Thar Desert. The main occupation of the people is agriculture and animal husbandry. A colourful culture rich in tradition prevails in this desert. The people have a great passion for folk music and folk poetry. Jodhpur, the largest city in the region, lies in the scrub forest zone. Bikaner and Jaisalmer are located in the desert proper. A large irrigation and power project has reclaimed areas of the northern and western desert for agriculture. The small population is mostly pastoral, and