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Hodna
The Hodna (french: Le Hodna) is a natural region of Algeria located between the Tell and Saharan Atlas ranges at the eastern end of the '' Hautes Plaines''. It is a vast depression lying in the northeastern section of M'Sila Province and the western end of Batna Province. Geography The Hodna region has a length of about 120 km in an NW - SE direction and a width of about 80 km. It is characterized by the Chott El Hodna, an endorheic salt lake, in its centre with seasonal brackish and saline pools and marshes. A thin film of water collects during wet seasons on the level terrain of the large lake basin, which becomes a salt flat when it dries. The elevation of the lake's surface is slightly below 400 m, while the surrounding steppe-like plain, characterized by wadis and oases, averages between 500 and 600 meters in elevation in the communes near the lake. The Hodna natural region gives its name to the Hodna Mountains located to the north. Its southern limit is marke ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hodna Mountains
The Hodna Mountains ( ar, جبال حضنة, french: Monts du Hodna) are a mountain massif in northeastern Algeria. It rises on the northern side of the Hodna natural region in the M'Sila Province, near the town of Maadid around 200 km southeast of Algiers. These mountains are one of the ranges of the Saharan Atlas, part of the Atlas Mountain System. Geography and vegetation The Hodna Mountain ridge is located south of Kabylie. It sits at a parallel latitude in a roughly east–west direction between the Bibans in the northwest and the Belezma Range in the east. The highest peak, at 1,902 meters, is the Djebel Tachrirt; another important summit is 1,659 m high. This mountain is a part of an important religious pilgrimage of some native tribes of Algerians. Djebel Guetiane, both located in the easternmost range of the Hodna chain already in Batna Province, towards the transition zone with the Aurès Mountains. The Maadid Range, the Kiyāna Range and the 'Aqqār Range a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chott El Hodna
The ''Chott el Hodna'' ( ar, شط الحضنة) is a very shallow saline lake in Algeria. It is located within an endorheic basin in the Hodna region, towards the eastern end of the '' Hautes Plaines''. The ''Chott el Hodna'' includes seasonal brackish and saline pools and marshes, but the central zone of the lake is characterized by a complete absence of vegetation. J. Despois argues that the ''Chott el Hodna'' is not a proper ''Chott'', but a ''Sebkha''. Ecology The ''chott'' area provides an important habitat for certain endangered species such as the Cuvier's gazelle, the marbled duck and different kinds of bustards, as well as indigenous fish species. The ''Chott el Hodna'' was declared a Ramsar site A Ramsar site is a wetland site designated to be of international importance under the Ramsar Convention,8 ha (O) *** Permanent 8 ha (P) *** Seasonal Intermittent < 8 ha(Ts) ** |
Hautes Plaines
The Hautes Plaines ("High Plains", ar, الهضاب العليا), also known as Hauts Plateaux, is a steppe-like natural region located in the Atlas Mountains in northern Algeria. It stretches more than in an east northeast – west southwest direction from northeastern Morocco to the Aures. It is a high plateau area consisting of undulating, steppe-like alluvial plains lying between the Tell and Saharan Atlas ranges. Geography The ''Hautes Plaines'' region averages between 1,100 and 1,300 m in elevation in the west, dropping to 400 m in the east. The climate is characterized by very dry summers and cold winters. Generally the climate is so dry that these plains are sometimes thought of as part of the Sahara. The plateau area is covered by alluvial debris formed when the mountains eroded. An occasional ridge projects through the alluvial cover to interrupt the monotony of the landscape. Water collects during the wet season on its level terrain, forming large shallow salt l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
M'Sila Province
ber, ⵎⵙⵉⵍⴰ ') is a province ('' wilaya'') of northern Algeria. It has a population of 1 million people and an area of 18,718 km², while its capital, also called M'sila, home to M'Sila University, has a population of about 100,000. Localities include Bou Saada and Maadid. Chott El Hodna, a salt lake, crosses into M'Sila. However, most of the region is semi-arid and undeveloped. Additionally, M'Sila was the location of the first village constructed as part of a government-run program to transition nomadic Algerians to sedentary life using local materials. The village, now complete, was dubbed Maader and consists of houses, public and trading areas, and a mosque. History The province was created from parts of Batna (département), Médéa (département) and Sétif (département) in 1974. Administrative divisions The province is divided into 15 districts (''daïras''), which are further divided into 47 ''communes'' or municipalities. Districts # Aïn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Batna Province
Batna Province ( ar, ولاية باتنة, Latn, ar, Wilāyat Bātnah) is a province of Algeria, in the region of Aurès. The capital is Batna. Localities in this province include N'Gaous, Merouana and Timgad. Belezma National Park is in the Belezma Range area of the province. Administrative divisions It is made up of 21 districts and 61 municipalities. The districts are: # Aïn Djasser # Aïn Touta # Arris # Barika # Batna # Bouzina # Chemora # Djezzar # El Madher # Ichmoul # Menaâ # Merouana # N'Gaous # Ouled Si Slimane # Ras El Aioun # Seggana # Seriana # T'Kout # Tazoult # Théniet El Abed # Timgad The municipalities are: # Aïn Djasser # Aïn Touta # Aïn Yagout # Amantan # Amdoukal # Arris # N'Gaous # Batna # Ben Foudhala El Hakania # Bitam # Boulhilat # Boumagueur # Boumia # Bouzina # Djerma # Djezzar # Draa Etine # El Hassi # El Madher # Fesdis # Foum Toub # Ghassira # Chemora # Gosbat # Guigba # Hayat # Hidoussa # Ichmoul # Inoughisse ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sabkha
A sabkha ( ar, سبخة) is a coastal, supratidal mudflat or sandflat in which evaporite-saline minerals accumulate as the result of semiarid to arid climate. Sabkhas are gradational between land and intertidal zone within restricted coastal plains just above normal high-tide level. Within a sabkha, evaporite-saline minerals sediments typically accumulate below the surface of mudflats or sandflats. Evaporite-saline minerals, tidal-flood, and aeolian deposits characterize many sabkhas found along modern coastlines. The accepted type locality for a sabkha is at the southern coast of the Persian Gulf, in the United Arab Emirates.Neuendorf, K.K.E., J.P. Mehl, Jr., and J.A. Jackson, eds. (2005) ''Glossary of Geology'' (5th ed.). Alexandria, Virginia, American Geological Institute. 779 pp. Tucker, M.E. and Wright, V.P., 2009. ''Carbonate sedimentology.'' John Wiley & Sons. and Warren, J.K., 2006. Evaporites: sediments, resources and hydrocarbons. Springer Science & Business Media.Warr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Region
A natural region (landscape unit) is a basic geographic unit. Usually, it is a region which is distinguished by its common natural features of geography, geology, and climate. From the ecological point of view, the naturally occurring flora and fauna of the region are likely to be influenced by its geographical and geological factors, such as soil and water availability, in a significant manner. Thus most natural regions are homogeneous ecosystems. Human impact can be an important factor in the shaping and destiny of a particular natural region. Main terms The concept "natural region" is a large basic geographical unit, like the vast boreal forest region. The term may also be used generically, like in alpine tundra, or specifically to refer to a particular place. The term is particularly useful where there is no corresponding or coterminous official region. The Fens of eastern England, the Thai highlands, and the Pays de Bray in Normandy, are examples of this. Others mig ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Steppe
In physical geography, a steppe () is an ecoregion characterized by grassland plains without trees apart from those near rivers and lakes. Steppe biomes may include: * the montane grasslands and shrublands biome * the temperate grasslands, savannas and shrublands biome A steppe may be semi-arid or covered with grass or with shrubs or with both, depending on the season and latitude. The term "steppe climate" denotes the climate encountered in regions too dry to support a forest but not dry enough to be a desert. Steppe soils are typically of the chernozem type. Steppes are usually characterized by a semi-arid or continental climate. Extremes can be recorded in the summer of up to and in winter, . Besides this major seasonal difference, fluctuations between day and night are also very great. In both the highlands of Mongolia and northern Nevada, can be reached during the day with sub-freezing readings at night. Mid-latitude steppes feature hot summers and co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Natural Regions Of Africa
Nature, in the broadest sense, is the physical world or universe. "Nature" can refer to the phenomena of the physical world, and also to life in general. The study of nature is a large, if not the only, part of science. Although humans are part of nature, human activity is often understood as a separate category from other natural phenomena. The word ''nature'' is borrowed from the Old French ''nature'' and is derived from the Latin word ''natura'', or "essential qualities, innate disposition", and in ancient times, literally meant "birth". In ancient philosophy, ''natura'' is mostly used as the Latin translation of the Greek word '' physis'' (φύσις), which originally related to the intrinsic characteristics of plants, animals, and other features of the world to develop of their own accord. The concept of nature as a whole, the physical universe, is one of several expansions of the original notion; it began with certain core applications of the word φύσις by pre-S ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of Algeria
Algeria comprises square kilometers of land, more than 80% of which is desert, in North Africa, between Morocco and Tunisia. It is the largest country in Africa. Its Arabic name, Al Jazair (the islands), is believed to derive from the rocky islands along the coastline of the Mediterranean Sea. The northern portion, an area of mountains, valleys, and plateaus between the Mediterranean and the Sahara Desert, forms an integral part of the section of North Africa known as the Maghreb. This area includes Morocco, Tunisia, and the northwestern portion of Libya known historically as Tripolitania. Size and boundaries Land boundaries:''Total:'' ''Border countries:'' Libya , Mali , Mauritania , Morocco , Niger , Tunisia , Western Sahara . Area – comparative: slightly larger than the Democratic Republic of the Congo and Saudi Arabia Coastline: Maritime claims: ''Territorial sea:'' , ''contiguous zone'': ''; exclusive fishing zone:'' Geographic regions The Tell The fertile Te ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nomad
A nomad is a member of a community without fixed habitation who regularly moves to and from the same areas. Such groups include hunter-gatherers, pastoral nomads (owning livestock), tinkers and trader nomads. In the twentieth century, the population of nomadic pastoral tribes slowly decreased, reaching an estimated 30–40 million nomads in the world . Nomadic hunting and gathering—following seasonally available wild plants and game—is by far the oldest human subsistence method. Pastoralists raise herds of domesticated livestock, driving or accompanying them in patterns that normally avoid depleting pastures beyond their ability to recover. Nomadism is also a lifestyle adapted to infertile regions such as steppe, tundra, or ice and sand, where mobility is the most efficient strategy for exploiting scarce resources. For example, many groups living in the tundra are reindeer herders and are semi-nomadic, following forage for their animals. Sometimes also described as " ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Silt
Silt is granular material of a size between sand and clay and composed mostly of broken grains of quartz. Silt may occur as a soil (often mixed with sand or clay) or as sediment mixed in suspension with water. Silt usually has a floury feel when dry, and lacks plasticity when wet. Silt also can be felt by the tongue as granular when placed on the front teeth (even when mixed with clay particles). Silt is a common material, making up 45% of average modern mud. It is found in many river deltas and as wind-deposited accumulations, particularly in central Asia, north China, and North America. It is produced in both very hot climates (through such processes as collisions of quartz grains in dust storms) and very cold climates (through such processes as glacial grinding of quartz grains.) Loess is soil rich in silt which makes up some of the most fertile agricultural land on Earth. However, silt is very vulnerable to erosion, and it has poor mechanical properties, making construc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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