- Also called:
- Great Indian Desert
Thar Desert
-
What is the Thar Desert?
The Thar Desert is an arid region with rolling sand hills on the Indian subcontinent. It is partly in Rajasthan state, northwestern India, and partly in Punjab and Sindh provinces, eastern Pakistan.
Covering about 77,000 square miles (200,000 square km), the Thar is bordered by the irrigated Indus River plain to the west, the Punjab Plain to the north and northeast, the Aravalli Range to the southeast, and the Rann of Kachchh to the south. A subtropical desert climate exists because of high pressure, and monsoon winds bypass it to the east.
The desert surface has high and low sand dunes divided by sandy plains and low barren hills. Dunes are always moving, and older dunes can rise to almost 500 feet (150 meters). Playas (saline lake beds) are scattered throughout.
1 Britannica SourceCreated from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles. -
Where is the Thar Desert located?
The Thar Desert, also known as the Great Indian Desert, is an arid region with rolling sand hills on the Indian subcontinent. It is located partly in Rajasthan state, northwestern India, and partly in the Punjab and Sindh provinces of eastern Pakistan. The Thar Desert is bordered by the irrigated Indus River plain to the west, the Punjab Plain to the north and northeast, the Aravalli Range to the southeast, and the Rann of Kachchh to the south. It covers approximately 77,000 square miles (200,000 square km).
2 Britannica SourcesCreated from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles. -
What kind of climate does the Thar Desert have?
The Thar Desert has a subtropical desert climate as a result of persistent high pressure at its latitude. The southwest monsoon winds, which bring rain to the subcontinent in summer, tend to bypass the Thar to the east.
Rainfall is generally low, ranging from 4 inches (100 mm) or less in the west to about 20 inches (500 mm) in the east, with about 90 percent of the total annual rainfall occurring during the southwest monsoon season, from July to September. May and June are the hottest months, with temperatures rising to 122 °F (50 °C). January is the coldest month, with temperatures between 41 and 50 °F (5 and 10 °C), and frost is frequent. Dust storms are common in May and June.
2 Britannica SourcesCreated from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles. -
What plants and animals live in the Thar Desert?
The Thar Desert, also known as the Great Indian Desert, is home to diverse plant and animal life despite its harsh conditions.
Desert vegetation in the Thar is mostly herbaceous or stunted scrub, with drought-resistant trees scattered across the landscape, especially in the east. Gum arabic acacia and euphorbia can be found on the hills, while the khajri (or khejri) tree (Prosopis cineraria) grows throughout the plains. Grasses form the main natural resource of the desert, providing nutritive pasturage and medicines.
The thinly populated grasslands support animals such as blackbucks, chikara (gazelles), some feathered game, notably francolins (partridges) and quail. Migratory birds like sand grouse, ducks, and geese are common. The desert is also home to the endangered great bustard. There are five major breeds of cattle in the Thar. Tharparkar breed is the highest yielder of milk, and the Kankre breed is good both as a beast of burden and as a milk producer. Sheep are bred for both medium-fine and rough wool, and camels are commonly used for transport, plowing, and other agricultural purposes.
4 Britannica SourcesCreated from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles. -
How do people survive and make a living in the Thar Desert?
The majority of people in the Thar Desert live in rural areas and belong to diverse economic, social, and ethnic groups, such as the Rajputs. Many are nomads who raise animals, trade, or practice crafts, often in symbiosis with the settled population.
Grasses are the main natural resource, providing pasturage and local medicines. The inhabitants raise cattle (Tharparkar and Kankre breeds), sheep for wool, and camels for transport and agriculture. Where there is water available, they grow wheat and cotton. Water is collected from seasonal rains in tanks and reservoirs, and canals like the Indira Gandhi Canal and the Sukkur Barrage provide irrigation. Industries include processing local raw materials, and mining.
2 Britannica SourcesCreated from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles. -
What are some environmental challenges faced by the Thar Desert today?
The Thar Desert faces several environmental challenges today. Water scarcity is a significant concern, as rainfall is low and fluctuates yearly. Most groundwater is too deep or saline to use. Wind erosion and infertile soils, which are mostly coarse-textured and calcium-bearing, are also major issues. The desert also faces dust storms with dust-raising winds at speeds of 87 to 93 miles per hour.
1 Britannica SourceCreated from Britannica articles using AI. AI can make mistakes, so verify using Britannica articles.
Thar Desert, arid region of rolling sand hills on the Indian subcontinent. It is located partly in Rajasthan state, northwestern India, and partly in Punjab and Sindh (Sind) provinces, eastern Pakistan.
The Thar Desert covers some 77,000 square miles (200,000 square km) of territory. It is bordered by the irrigated Indus River plain to the west, the Punjab Plain to the north and northeast, the Aravalli Range to the southeast, and the Rann of Kachchh to the south. The subtropical desert climate there results from persistent high pressure and subsidence at that latitude. The prevailing southwest monsoon winds that bring rain to much of the subcontinent in summer tend to bypass the Thar to the east. The name Thar is derived from thul, the general term for the regionās sand ridges.
Land
The Tharās desert sands overlie Archean (early Precambrian) gneiss (metamorphic rocks formed between 4 billion and 2.5 billion years ago), Proterozoic (later Precambrian) sedimentary rocks (formed about 2.5 billion to 541 million years ago), and more-recent alluvium (material deposited by rivers). The surface consists of aeolian (wind-deposited) sand that has accumulated over the past 1.8 million years.
The desert presents an undulating surface, with high and low sand dunes separated by sandy plains and low barren hills, or bhakars, which rise abruptly from the surrounding plains. The dunes are in continual motion and take on varying shapes and sizes. Older dunes, however, are in a semi-stabilized or stabilized condition, and many rise to a height of almost 500 feet (150 metres) above the surrounding areas. Several playas (saline lake beds), locally known as dhands, are scattered throughout the region.
The soils consist of several main groupsādesert soils, red desertic soils, sierozems (brownish gray soils), the red and yellow soils of the foothills, the saline soils of the depressions, and the lithosols (shallow weathered soils) and regosols (soft loose soils) found in the hills. All those soils are predominantly coarse-textured, well-drained, and calcareous (calcium-bearing). A thick accumulation of lime often occurs at varying depths. The soils are generally infertile and, because of severe wind erosion, are overblown with sand.
The amount of annual rainfall in the desert is generally low, ranging from about 4 inches (100 mm) or less in the west to about 20 inches (500 mm) in the east. Precipitation amounts fluctuate widely from year to year. About 90 percent of the total annual rainfall occurs during the season of the southwest monsoon, from July to September (see also Indian monsoon). During other seasons the prevailing wind is the dry northeast monsoon. May and June are the hottest months of the year, with temperatures rising to 122 °F (50 °C). During January, the coldest month, the mean minimum temperature ranges between 41 and 50 °F (5 and 10 °C), and frost is frequent. Dust storms and dust-raising winds, often blowing with velocities of 87 to 93 miles (140 to 150 km) per hour, are common in May and June.
The desert vegetation is mostly herbaceous or stunted scrub; drought-resistant trees occasionally dot the landscape, especially in the east. On the hills, gum arabic acacia and euphorbia may be found. The khajri (or khejri) tree (Prosopis cineraria) grows throughout the plains.
The thinly populated grasslands support blackbucks, chikara (gazelles), and some feathered game, notably francolins (partridges) and quail. Among the migratory birds, sand grouse, ducks, and geese are common. The desert is also the home of the endangered great bustard.
People
Most of the desertās inhabitants reside in rural areas and are distributed in varying densities. Both Islam and Hinduism are practiced, and the population is divided into complex economic and social groups. The prevailing languages are Sindhi in the southwest, Lahnda in the northwest, and Rajasthani languagesāespecially Marwariāin central and eastern portions of the Thar. The ethnic composition of the Thar is diverse. Among the most prominent groups are the Rajputs, who inhabit the central Thar. Many nomads are engaged in animal husbandry, crafts, or trade. In general, the nomads are symbiotically related to the sedentary population and its economy.
Economy
The grasses form the main natural resources of the desert. They provide nutritive pasturage as well as medicines used locally by the inhabitants. Alkaloids, used for making medicine and oils for making soap are also extracted. There are five major breeds of cattle in the Thar. Among those the Tharparkar breed is the highest yielder of milk, and the Kankre breed is good both as a beast of burden and as a milk producer. Sheep are bred for both medium-fine and rough wool. Camels are commonly used for transport as well as for plowing the land and other agricultural purposes. Where water is available, farmers grow crops such as wheat and cotton.
However, water is scarce. Whatever seasonal rain falls is collected in tanks and reservoirs and is used for drinking and domestic purposes. Most groundwater cannot be utilized, because it lies deep underground and is often saline. Good aquifers have been detected in the central part of the desert. Apart from wells and tanks, canals are the main sources of water in the desert. The Sukkur Barrage on the Indus River, completed in 1932, irrigates the southern Thar region in Pakistan by means of canals, and the Gang Canal carries water from the Sutlej River to the northwest. The Indira Gandhi Canal irrigates a vast amount of land in the Indian portion of the Thar. The canal begins at the Harike Barrageāat the confluence of the Sutlej and Beas rivers in the Indian Punjabāand continues in a southwesterly direction for some 290 miles (470 km).
Thermal power-generating plants, fueled by coal and oil, supply power only locally in the large towns. Hydroelectric power is supplied by the Nangal power plant located on the Sutlej River in Punjab.
Roads and railways are few. One railway line serves the southern part of the region. In the Indian part of the desert, a second line goes from Merta Road to Suratgarh via Bikaner, and another connects Jodhpur and Jaisalmer. In the Pakistani part of the desert, a railway line runs between Bahawalpur and Hyderabad.
The partition of India and Pakistan in 1947 left most of the irrigation canals fed by the rivers of the Indus system in Pakistani territory, while a large desert region remained unirrigated on the Indian side of the border. The Indus Water Treaty of 1960 fixed and delimited the rights and obligations of both countries concerning the use of waters of the Indus River system. Under the agreement, waters of the Ravi, Beas, and Sutlej rivers are to be made available to the Indira Gandhi Canal mainly to irrigate portions of the Thar in western Rajasthan.







