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Mangoky River
The Mangoky River is a 564-kilometer-long (350 mi) river in Madagascar in the regions of Atsimo-Andrefana and Anosy. It is formed by the Mananantanana and the Matsiatra. Another important affluent is the Zomandao River. It rises in the Central Highlands of Madagascar just east of the city of Fianarantsoa. The river flows generally in a westerly direction out of the highlands, crosses the southern extension of the Bemaraha Plateau, reaches the coastal plain and its delta, and enters the Mozambique Channel north of the city of Morombe at . Most of Madagascar has undergone serious deforestation during the last 40 years, chiefly from slash-and-burn practises by indigenous peoples. This loss of forest has led to extreme soil erosion in the Mangoky River basin, as evidenced by the many sandbars located within the river channel. Silt-laden, greenish-tan Lake Ihotry is clearly discernible south of the river. Between the lake and the coast is a rather large, whitish area of sand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mangoky Delta
The Mangoky River is a 564-kilometer-long (350 mi) river in Madagascar in the regions of Atsimo-Andrefana and Anosy. It is formed by the Mananantanana and the Matsiatra. Another important affluent is the Zomandao River. It rises in the Central Highlands of Madagascar just east of the city of Fianarantsoa. The river flows generally in a westerly direction out of the highlands, crosses the southern extension of the Bemaraha Plateau, reaches the coastal plain and its delta, and enters the Mozambique Channel north of the city of Morombe at . Most of Madagascar has undergone serious deforestation during the last 40 years, chiefly from slash-and-burn practises by indigenous peoples. This loss of forest has led to extreme soil erosion in the Mangoky River basin, as evidenced by the many sandbars located within the river channel. Silt-laden, greenish-tan Lake Ihotry is clearly discernible south of the river. Between the lake and the coast is a rather large, whitish area of sand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slash-and-burn
Slash-and-burn agriculture is a farming method that involves the cutting and burning of plants in a forest or woodland to create a field called a swidden. The method begins by cutting down the trees and woody plants in an area. The downed vegetation, or "slash", is then left to dry, usually right before the rainiest part of the year. Then, the biomass is burned, resulting in a nutrient-rich layer of ash which makes the soil fertile, as well as temporarily eliminating weed and pest species. After about three to five years, the plot's productivity decreases due to depletion of nutrients along with weed and pest invasion, causing the farmers to abandon the field and move to a new area. The time it takes for a swidden to recover depends on the location and can be as little as five years to more than twenty years, after which the plot can be slashed and burned again, repeating the cycle. In Bangladesh and India, the practice is known as jhum or jhoom. Slash-and-burn is a type of shif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rivers Of Madagascar
This is a list of streams and rivers in Madagascar A Andranotsimisiamalona River - Ankavanana - Antainambalana River B Bemarivo River - Besokatra River - Betsiboka River - Bombetoka River F Fanambana River - Faraony River - Fiherenana River I Iazafo - Ifasy River - Ihosy River - Ikopa River - Irodo River - Ivondro River L Linta River - Loky River - Lokoho River - Loky River M Mahajamba River - Mahajilo River - Mahavavy River - Manajeba River - Manambaho River - Manambolo River - Manampatrana River - Mananara River (south) - Mananara River (Analanjirofo) - Mananjary River - Mananjeba River - Mandrare River - Mangoky River - Mangoro River - Mania River - Maningory River - Marimbona - Menarandra River - Morondava River N Namorona River - Nosivolo River O Onilahy River - Onive River - Onive River (Sava) R Ramena River - Rianila River S Sahamaitso - Saharenana River - Sahatandra - Sahatavy River - Sakaleona River - Sakanila ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Rivers Of Madagascar
This is a list of streams and rivers in Madagascar A Andranotsimisiamalona River - Ankavanana - Antainambalana River B Bemarivo River - Besokatra River - Betsiboka River - Bombetoka River F Fanambana River - Faraony River - Fiherenana River I Iazafo - Ifasy River - Ihosy River - Ikopa River - Irodo River - Ivondro River L Linta River - Loky River - Lokoho River - Loky River M Mahajamba River - Mahajilo River - Mahavavy River - Manajeba River - Manambaho River - Manambolo River - Manampatrana River - Mananara River (south) - Mananara River (Analanjirofo) - Mananjary River - Mananjeba River - Mandrare River - Mangoky River - Mangoro River - Mania River - Maningory River - Marimbona - Menarandra River - Morondava River N Namorona River - Nosivolo River O Onilahy River - Onive River - Onive River (Sava) R Ramena River The Ramena River is a river of northwestern Madagascar in the region of Diana. It has its sources at the Maromok ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Route Nationale 9 (Madagascar)
''Route nationale 9'' (''RN 9'') is a secondary highway in Madagascar of 382 km, running from Toliara to Mandabe. It crosses the regions of Menabe and Atsimo-Andrefana. The section between Toliara and Analamisampy of 107 km had been paved recently. Also over the Mangoky river a bridge will be constructed. It will be the longest bridge of Madagascar with 880 m. Selected locations on route (north to south) *Mandabe *Maharivo River crossing * Manja * near Tanambao Ambony - Mangoky River crossing and Lake Ihotry -intersection with RN55 to Morombe * Befandriana Sud * Antanimeva *river crossing near Ambalavenoka *Reniala Reserve * Ifaty *Fiherenana River crossing *Toliara (Tuléar) See also * List of roads in Madagascar *Transport in Madagascar Paved and unpaved roadways, as well as railways, provide the main forms of transport in Madagascar. Madagascar has approximately of paved roads and 836 km of rail lines. In 2010, Madagascar had of navigable waterways. Railways ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mangoky River
The Mangoky River is a 564-kilometer-long (350 mi) river in Madagascar in the regions of Atsimo-Andrefana and Anosy. It is formed by the Mananantanana and the Matsiatra. Another important affluent is the Zomandao River. It rises in the Central Highlands of Madagascar just east of the city of Fianarantsoa. The river flows generally in a westerly direction out of the highlands, crosses the southern extension of the Bemaraha Plateau, reaches the coastal plain and its delta, and enters the Mozambique Channel north of the city of Morombe at . Most of Madagascar has undergone serious deforestation during the last 40 years, chiefly from slash-and-burn practises by indigenous peoples. This loss of forest has led to extreme soil erosion in the Mangoky River basin, as evidenced by the many sandbars located within the river channel. Silt-laden, greenish-tan Lake Ihotry is clearly discernible south of the river. Between the lake and the coast is a rather large, whitish area of sand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mangoky Basin OSM
The Mangoky River is a 564-kilometer-long (350 mi) river in Madagascar in the regions of Atsimo-Andrefana and Anosy. It is formed by the Mananantanana and the Matsiatra. Another important affluent is the Zomandao River. It rises in the Central Highlands of Madagascar just east of the city of Fianarantsoa. The river flows generally in a westerly direction out of the highlands, crosses the southern extension of the Bemaraha Plateau, reaches the coastal plain and its delta, and enters the Mozambique Channel north of the city of Morombe at . Most of Madagascar has undergone serious deforestation during the last 40 years, chiefly from slash-and-burn practises by indigenous peoples. This loss of forest has led to extreme soil erosion in the Mangoky River basin, as evidenced by the many sandbars located within the river channel. Silt-laden, greenish-tan Lake Ihotry is clearly discernible south of the river. Between the lake and the coast is a rather large, whitish area of sand ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mangrove
A mangrove is a shrub or tree that grows in coastal saline water, saline or brackish water. The term is also used for tropical coastal vegetation consisting of such species. Mangroves are taxonomically diverse, as a result of convergent evolution in several plant families. They occur worldwide in the tropics and subtropics and even some temperate coastal areas, mainly between latitudes 30° N and 30° S, with the greatest mangrove area within 5° of the equator. Mangrove plant families first appeared during the Late Cretaceous to Paleocene epochs, and became widely distributed in part due to the plate tectonics, movement of tectonic plates. The oldest known fossils of Nypa fruticans, mangrove palm date to 75 million years ago. Mangroves are salt-tolerant trees, also called halophytes, and are adapted to live in harsh coastal conditions. They contain a complex salt filtration system and a complex root system to cope with saltwater immersion and wave action. They are ad ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lake Ihotry
Lake Ihotry is the second largest lake of Madagascar. It is a closed saline lake in semi-arid southwestern part of Madagascar in the region of Atsimo-Andrefana. Its area varies seasonally, from 96 km2 to 112 km2. Roads It can be reached by the RN9 from Toliara (Tulear) to Mandabe Mandabe is a town and commune ( mg, kaominina) in Madagascar. It belongs to the district of Mahabo, which is a part of Menabe Region. The population of the commune was estimated to be approximately 27,000 in 2001 commune census. An airport serves .... Citations Other sources BirdLifeGeophysical Research document Ihotry Atsimo-Andrefana Important Bird Areas of Madagascar {{Madagascar-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sandbar
In oceanography, geomorphology, and Earth science, geoscience, a shoal is a natural submerged ridge, bank (geography), bank, or bar that consists of, or is covered by, sand or other unconsolidated material and rises from the bed of a body of water to near the surface. It often refers to those submerged ridges, banks, or bars that rise near enough to the surface of a body of water as to constitute a danger to navigation. Shoals are also known as sandbanks, sandbars, or gravelbars. Two or more shoals that are either separated by shared crest and trough, troughs or interconnected by past or present sedimentary and hydrographic processes are referred to as a shoal complex.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. The term ''shoal'' is also used in a number of ways that can be either similar or quite different from how it is used in geologic, geomorphic, and ocea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Soil Erosion
Soil erosion is the denudation or wearing away of the upper layer of soil. It is a form of soil degradation. This natural process is caused by the dynamic activity of erosive agents, that is, water, ice (glaciers), snow, air (wind), plants, and animals (including humans). In accordance with these agents, erosion is sometimes divided into water erosion, glacial erosion, snow erosion, wind (aeolean) erosion, zoogenic erosion and anthropogenic erosion such as tillage erosion. Soil erosion may be a slow process that continues relatively unnoticed, or it may occur at an alarming rate causing a serious loss of topsoil. The loss of soil from farmland may be reflected in reduced crop production potential, lower surface water quality and damaged drainage networks. Soil erosion could also cause sinkholes. Human activities have increased by 10–50 times the rate at which erosion is occurring world-wide. Excessive (or accelerated) erosion causes both "on-site" and "off-site" problems. On- ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deforestation
Deforestation or forest clearance is the removal of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. The most concentrated deforestation occurs in tropical rainforests. About 31% of Earth's land surface is covered by forests at present. This is one-third less than the forest cover before the expansion of agriculture, a half of that loss occurring in the last century. Between 15 million to 18 million hectares of forest, an area the size of Bangladesh, are destroyed every year. On average 2,400 trees are cut down each minute. The Food and Agriculture Organization of the United Nations defines deforestation as the conversion of forest to other land uses (regardless of whether it is human-induced). "Deforestation" and "forest area net change" are not the same: the latter is the sum of all forest losses (deforestation) and all forest gains (forest expansion) in a gi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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