The Kopet Dag semi-desert

ecoregion An ecoregion (ecological region) or ecozone (ecological zone) is an ecologically and geographically defined area that is smaller than a bioregion, which in turn is smaller than a biogeographic realm. Ecoregions cover relatively large areas of l ...

(WWF ID: PA1319) is a small ecoregion that crosses the border of southwestern

Turkmenistan Turkmenistan ( or ; tk, Türkmenistan / Түркменистан, ) is a country located in Central Asia, bordered by Kazakhstan to the northwest, Uzbekistan to the north, east and northeast, Afghanistan to the southeast, Iran to the sout ...

into northeastern

Iran Iran, officially the Islamic Republic of Iran, and also called Persia, is a country located in Western Asia. It is bordered by Iraq and Turkey to the west, by Azerbaijan and Armenia to the northwest, by the Caspian Sea and Turkmeni ...

. It covers a transition zone between the deserts to the north and west, and the foothill steppes and woodlands in the higher

Kopet Dag The Köpet Dag, Kopet Dagh, or Koppeh Dagh ( tk, Köpetdag; fa, کپه‌داغ), also known as the Turkmen-Khorasan Mountain Range, is a mountain range on the border between Turkmenistan and Iran that extends about along the border southeast o ...

mountains to the east and the

Alborz The Alborz ( fa, البرز) range, also spelled as Alburz, Elburz or Elborz, is a mountain range in northern Iran that stretches from the border of Azerbaijan along the western and entire southern coast of the Caspian Sea and finally runs nort ...

Mountains to the south. The terrain is mostly barren semi-desert and widespread 'takir', a type of seasonal salt flat or dried clay deposit in an interdune depression.

Location and description

The region is mostly at a low altitude along the base of the mountains, particularly in a 20 km wide strip of cultivated land that reaches 300 km east to the capital city of

Ashgabat Ashgabat or Asgabat ( tk, Aşgabat, ; fa, عشق‌آباد, translit='Ešqābād, formerly named Poltoratsk ( rus, Полтора́цк, p=pəltɐˈratsk) between 1919 and 1927), is the capital and the largest city of Turkmenistan. It lies ...

. The

Caspian lowland desert The Caspian lowland desert ecoregion (WWF ID: PA1308) covers the north and southeast coasts of the Caspian Sea, including the deltas of the Volga River and Ural River in the northern region. While the region gets relatively low amounts of precipit ...

ecoregion occupies a 20 km wide strip of land between the Kopet Dag semi-desert and the

Caspian Sea The Caspian Sea is the world's largest inland body of water, often described as the world's largest lake or a full-fledged sea. An endorheic basin, it lies between Europe and Asia; east of the Caucasus, west of the broad steppe of Central Asia ...

. To the north is another desert, the

Central Asian southern desert The Central Asian southern desert ecoregion (WWF ID: PA1312) is an arid but ecologically active region between the east coast of the Caspian Sea and steppes at the base of the mountains of central Asia. Most of Turkmenistan and eastern Uzbekistan ...

. To the south are the

Kopet Dag woodlands and forest steppe The Kopet Dag woodlands and forest steppe ecoregion (WWF ID: PA1008) coincides with the Kopet Dag mountains, straddling the southern border of Turkmenistan and the northeastern border of Iran. The region is one of high biodiversity, as it includes ...

ecoregion, and the

Caspian Hyrcanian mixed forests The Hyrcanian forests ( fa, جنگل های هیرکانی) are a zone of lush lowland and montane forests covering about adjoining the shores of the Caspian Sea of Iran and part of that of Azerbaijan. The forest is named after the ancient reg ...

ecoregion. The ecoregion is about 350 km from west to east, and 200 km from North to south.

Climate

The climate of the ecoregion is ''

Cold semi-arid climate A semi-arid climate, semi-desert climate, or steppe climate is a dry climate sub-type. It is located on regions that receive precipitation below potential evapotranspiration, but not as low as a desert climate. There are different kinds of semi-ar ...

'' (

Köppen climate classification The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, with several later modifications by Köppen, notabl ...

(BSk)). This climate is characteristic of steppe climates intermediary between desert humid climates, and typically have precipitation is above

evapotranspiration Evapotranspiration (ET) is the combined processes by which water moves from the earth’s surface into the atmosphere. It covers both water evaporation (movement of water to the air directly from soil, canopies, and water bodies) and transpi ...

. At least one month averages below . Precipitation may reach 200 mm/year.

Flora and fauna

Much of the region is devoid of vegetation. But there is significant cultivation in the strip on the northern edge of the Kopet Dag. There is also herbaceous ground cover and cultivation in the southern 50-100 km of the region, particularly in Iran.

Protections

There are few protected areas in the ecoregion. A small portion of

Golestan National Park Golestan National Park ( fa, پارک ملی گلستان), commonly known as the Golestan Jungle (), is an Iranian National Park in Golestan Province, northeastern Iran. Geography The park is located in the eastern Alborz (Elburs) Mountains ra ...

in Iran crosses into the Kopet Dag semi-desert.

References

{{reflist Ecoregions of Iran Ecoregions of Turkmenistan Deserts and xeric shrublands Palearctic ecoregions