Turkmenistan

Relief

Topographically, four-fifths of Turkmenistan consists of the southern part of the Turan Plain. Mountains and foothills rise mainly in the southern part of the republic, including the Kugitangtau and Kopet-Dag ranges. The Kopet-Dag is geologically young, its instability indicated by intermittent earthquakes of great destructive force.

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Two broad divisions may be seen throughout Turkmenistan: an oasis region—characterized by adequate water supply, cultivated lands, and developed industry—composed of the Kopet-Dag and other oases; and a desert region occupying nine-tenths of Turkmenistan’s territory, subdivided into western Turkmenistan and the Karakum. The Karakum is one of the world’s largest sand deserts, taking up the entire central part of Turkmenistan and extending northward toward Kazakhstan.

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Oases

The Kopet-Dag oasis stretches along the northern foothills of the Kopet-Dag Range, the slopes of which offer large areas for nonirrigated farming; both the mountains and foothills are also rich in mineral resources. The economic and cultural centre of the oasis is the capital city of Ashgabat. The development of the capital has stimulated industry, turning an agrarian oasis into the industrial-agrarian core of the republic.

The Morghāb oasis is famous for its fine-staple cotton, silk, handmade carpets and rugs, and Karakul sheep. The Morghāb River, the lower reaches of which are crossed by the Karakum Canal, can supply more water for irrigation. Mary (formerly Merv) is the centre of the oasis and the surrounding region.

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Separated from the Morghāb by a stretch of the Karakum, the Tejen oasis formed along the Tejen River. Before the construction of the Karakum Canal, only small areas of wheat, barley, and melons could be cultivated because of the scarcity of water. After the oasis was crossed by the canal, however, and the Hauz-Khan Reservoir built, large areas were irrigated, thus making possible the cultivation of long-staple cotton and the construction of cotton-processing plants. The economic and cultural centre is the town of Tejen.

The middle Amu Darya oasis, in contrast to other oases, stretches almost without interruption for hundreds of miles and is almost entirely cultivated. The Amu Darya waters are very rich in silt, an excellent natural fertilizer. Raising of cotton and silkworms has long been widespread in that area, which is also an important producer of kenaf and other fibre crops. The adjoining deserts provide fodder for Karakul sheep. Industries processing agricultural products and mineral raw materials have been developed in the oasis as well. The economic and administrative centre of the oasis and the region is Türkmenabat (Chardzhou), the second largest city and industrial centre in Turkmenistan.

The lower Amu Darya oasis lies in the ancient delta of the Amu Darya and was long one of the most important agricultural regions of the republic. The oasis is cut by a dense network of old riverbeds as well as by irrigation channels and ditches beginning in neighbouring Uzbekistan. Reductions in the lower Amu Darya’s flow threaten to impair this oasis’s agricultural output, however.

Drainage

Turkmenistan’s main rivers are the aforementioned Amu Darya (ancient Oxus River), which flows along its northeastern border toward the Aral Sea, and the Tejen, Morghāb (Murgab, or Murgap), and Atrek; there are also numerous small mountain rivers. However, the geographic position of the rivers and the direction of their flow do not coincide with the location of cultivable lands; the most fertile—and still insufficiently used—lands lie chiefly in the south, northeast, and west, whereas the principal rivers run mostly in the east. The Karakum Canal, completed in 1967, is one of the world’s largest irrigation and shipping canals. The water lost from these canals through irrigation and from evaporation in the arid climate contributes to the shortfall of the Amu Darya and other streams in their lower courses.

Climate

Turkmenistan’s position deep inside Asia and the character of its relief are responsible for a strongly continental climate, which exhibits great fluctuations in temperatures during the day and the year. The average annual temperature is 57–61 °F (14–16 °C), but this figure masks an extremely wide range. The temperature seldom falls below 95 °F (35 °C) during summer days, and the absolute maximum high temperature in the southeast Karakum reaches 122 °F (50 °C) in the shade. By contrast, in winter the temperature in Serhetabat, in the extreme south on the border with Afghanistan, drops to −27 °F (−33 °C). Precipitation occurs mainly in the spring and ranges from about 3 inches (80 millimetres) per year in the northwest desert to as much as 12 inches in the mountains.

Plant and animal life

Except in the oases and mountain valleys and plateaus, the vegetation is of a pronounced desert character. In the mountain valleys of the Kopet-Dag, wild grapes, almonds, figs, and walnuts are found, while juniper and pistachio trees grow on the open slopes. On the riverbanks and islands of the Amu Darya stand tugai (dense floodplain forests) of black poplar, willow, reed, and cane.

The desert is home to foxes, wildcats, gazelles, and tortoises, while the mountains support goats, cheetahs, lynx, snow leopards, and porcupines. Jackals, wild boars, various species of birds, and the rare pink deer inhabit the tugai; wild donkeys roam the Badkhyz and Garabil plateaus in the southwest. Vast flocks of ducks, geese, and swans make the east coast of the Caspian Sea their winter home. In the Caspian, fishermen find abundant herring, sprat, roach, and sturgeon; before it became heavily polluted, the Amu Darya supplied edible carp, barbel, and pike.