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Mahbere Sillasie
Mahbere Sillasie is a ''tabia'' or municipality in the Dogu'a Tembien district of the Tigray Region of Ethiopia. The ''tabia'' centre is in Guderbo village, located approximately 2.5 km to the west-northwest of the ''woreda'' town Hagere Selam. Geography The ''tabia'' stretches down from the ridge west of Hagere Selam, northbound towards Tsaliet river. The highest peak is just south of Guderbo (2730 m a.s.l.) and the lowest place deep in the Tsaliet gorge (1780 m a.s.l.). Geology From the higher to the lower locations, the following geological formations are present: * Phonolite plugs * Upper basalt * Interbedded lacustrine deposits * Lower basalt * Amba Aradam Formation * Antalo Limestone * Adigrat Sandstone Climate The rainfall pattern shows a very high seasonality with 70 to 80% of the annual rain falling in July and August. Mean temperature in Guderbo is 17.4 °C, oscillating between average daily minimum of 9.6 °C and maximum of 24.8 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TPLF
The Tigray People's Liberation Front (TPLF; ti, ህዝባዊ ወያነ ሓርነት ትግራይ, lit=Popular Struggle for the Freedom of Tigray), also called the Tigrayan People's Liberation Front, is a left-wing ethnic nationalist paramilitary group, a banned political party, and the former ruling party of Ethiopia. It is designated as a terrorist organization by the Ethiopian government. It is widely known as Woyane ( ti, ወያነ), or Wayane ( am, ወያኔ) in older texts and Amharic publications. The TPLF was established on 18 February 1975 in Dedebit, northwestern Tigray, according to official records. Within 16 years, it had grown from about a dozen men into the most powerful armed “liberation” movement in Ethiopia. It led a political coalition called the Ethiopian People's Revolutionary Democratic Front (EPRDF) from 1989 to 2018. It fought a 15-year-long war against the Derg regime which was overthrown in 1991. Due largely to its war fighting capabilities, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chini (reservoir)
Chini is a small reservoir located in Melfa ( Dogu’a Tembien ''woreda'', Tigray Region, Ethiopia). The 151-metres long earthen dam that holds the reservoir was built in 1993 by the Relief Society of Tigray. It was mainly constructed for purpose of livestock watering. The catchment of the reservoir is 1.86 km² large, with a perimeter of 5.15 km and a length of 1800 metres. The reservoir suffers from rapid siltation. The lithology of the catchment is composed of Ashangi Basalts. Part of the water that could be used for irrigation is lost through seepage; the positive side-effect is that this contributes to groundwater recharge Groundwater recharge or deep drainage or deep percolation is a hydrologic process, where water moves downward from surface water to groundwater. Recharge is the primary method through which water enters an aquifer. This process usually occurs .... Actually, in the wider surrounding of the reservoir, both upstream and downstream the level of the watertab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
History Of Tembien
Tembien ( Tigrigna: ተምቤን) is a historic region in Tigray Region and former provinces of Ethiopia. It is a mountainous area of that country. During the reforms in 1994–95, the old provinces were replaced with regions, zones and woredas. The area of the former province is now split over the woredas of Dogua Tembien and Kola Tembien. It was located east of the Semien Province and north of Abergele, a historic district of the Begemder province. On the east, it was bordered by the Enderta Province. The original capital of the province was Melfa, west of the current town of Hagere Selam; later on Abiy Addi, nowadays located in Kola Tembien (''Lower Tembien''), became the capital. The region reached a highpoint in the Tsatsen mountains at 2828 meters above sea level, just south of Hagere Selam. Prehistory Tembien holds numerous prehistoric sites, which have been dated to the Middle Stone Age in Ayninbirkekin, or Pastoral Neolithic in Aregen and Menachek. The Dabo Zell ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cropping System
The term cropping system refers to the crops, crop sequences and management techniques used on a particular agricultural field over a period of years. It includes all spatial and temporal aspects of managing an agricultural system. Historically, cropping systems have been designed to maximise yield, but modern agriculture is increasingly concerned with promoting environmental sustainability in cropping systems. Crop choice Crop choice is central to any cropping system. In evaluating whether a given crop will be planted, a farmer must consider its profitability, adaptability to changing conditions, resistance to disease, and requirement for specific technologies during growth or harvesting. They must also consider the prevailing environmental conditions on their farm, and how the crop will fit in with other elements of their production system. Crop organisation and rotation Monoculture is the practice of growing a single crop in a given area, where polyculture involves growing m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Farming System
Agriculture or farming is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in cities. The history of agriculture began thousands of years ago. After gathering wild grains beginning at least 105,000 years ago, nascent farmers began to plant them around 11,500 years ago. Sheep, goats, pigs and cattle were domesticated over 10,000 years ago. Plants were independently cultivated in at least 11 regions of the world. Industrial agriculture based on large-scale monoculture in the twentieth century came to dominate agricultural output, though about 2 billion people still depended on subsistence agriculture. The major agricultural products can be broadly grouped into foods, fibers, fuels, and raw materials (such as rubber). Food classes include cereals (grains), vegetables, fruits, cooking oils, meat, milk, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agricultural System
Agriculture or farming is the practice of cultivating plants and livestock. Agriculture was the key development in the rise of sedentary human civilization, whereby farming of domesticated species created food surpluses that enabled people to live in cities. The history of agriculture began thousands of years ago. After gathering wild grains beginning at least 105,000 years ago, nascent farmers began to plant them around 11,500 years ago. Sheep, goats, pigs and cattle were domesticated over 10,000 years ago. Plants were independently cultivated in at least 11 regions of the world. Industrial agriculture based on large-scale monoculture in the twentieth century came to dominate agricultural output, though about 2 billion people still depended on subsistence agriculture. The major agricultural products can be broadly grouped into foods, fibers, fuels, and raw materials (such as rubber). Food classes include cereals (grains), vegetables, fruits, cooking oils, meat, milk, egg ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Farmland
Agricultural land is typically land ''devoted to'' agriculture, the systematic and controlled use of other forms of lifeparticularly the rearing of livestock and production of cropsto produce food for humans. It is generally synonymous with both farmland or cropland, as well as pasture or rangeland. The United Nations Food and Agriculture Organization (FAO) and others following its definitions, however, also use ''agricultural land'' or as a term of art, where it means the collection of: * ''arable land'' (also known as ''cropland''): here redefined to refer to land producing crops requiring annual replanting or fallowland or pasture used for such crops within any five-year period * ''permanent cropland'': land producing crops which do not require annual replanting * ''permanent pastures'': natural or artificial grasslands and shrublands able to be used for grazing livestock This sense of "agricultural land" thus includes a great deal of land not devoted to agricultural use. Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Non-timber Forest Product
Non-timber forest products (NTFPs) are useful foods, substances, materials and/or commodities obtained from forests other than timber. Harvest ranges from wild collection to farming. They typically include game animals, fur-bearers, nuts, seeds, berries, mushrooms, oils, sap, foliage, pollarding, medicinal plants, peat, mast, fuelwood, fish, insects, spices, and forage. Overlapping concepts include non-wood forest products (NWFPs), wild forest products, minor forest produce, special, minor, alternative and secondary forest products – for further distinctions see the definition section below Research on NTFPs has focused on their ability to be produced as commodities for rural incomes and markets, as an expression of traditional knowledge or as a livelihood option for rural household needs, as a key component of sustainable forest management and conservation strategies, and for their important role in improving dietary diversity and providing nutritious food, particularly f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carbon Sequestration
Carbon sequestration is the process of storing carbon in a carbon pool. Carbon dioxide () is naturally captured from the atmosphere through biological, chemical, and physical processes. These changes can be accelerated through changes in land use and agricultural practices, such as converting crop land into land for non-crop fast growing plants. Artificial processes have been devised to produce similar effects, including large-scale, artificial capture and sequestration of industrially produced using subsurface saline aquifers, reservoirs, ocean water, aging oil fields, or other carbon sinks, bio-energy with carbon capture and storage, biochar, enhanced weathering, direct air capture and water capture when combined with storage. Forests, kelp beds, and other forms of plant life absorb carbon dioxide from the air as they grow, and bind it into biomass. However, these biological stores are considered volatile carbon sinks as the long-term sequestration cannot be guaranteed. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sediment
Sediment is a naturally occurring material that is broken down by processes of weathering and erosion, and is subsequently transported by the action of wind, water, or ice or by the force of gravity acting on the particles. For example, sand and silt can be carried in suspension in river water and on reaching the sea bed deposited by sedimentation; if buried, they may eventually become sandstone and siltstone (sedimentary rocks) through lithification. Sediments are most often transported by water (fluvial processes), but also wind (aeolian processes) and glaciers. Beach sands and river channel deposits are examples of fluvial transport and deposition, though sediment also often settles out of slow-moving or standing water in lakes and oceans. Desert sand dunes and loess are examples of aeolian transport and deposition. Glacial moraine deposits and till are ice-transported sediments. Classification Sediment can be classified based on its grain size, grain shape, and c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Water Infiltration
Infiltration is the process by which water on the ground surface enters the soil. It is commonly used in both hydrology and soil sciences. The infiltration capacity is defined as the maximum rate of infiltration. It is most often measured in meters per day but can also be measured in other units of distance over time if necessary. The infiltration capacity decreases as the soil moisture content of soils surface layers increases. If the precipitation rate exceeds the infiltration rate, runoff will usually occur unless there is some physical barrier. Infiltrometers, permeameters and rainfall simulators are all devices that can be used to measure infiltration rates. Infiltration is caused by multiple factors including; gravity, capillary forces, adsorption and osmosis. Many soil characteristics can also play a role in determining the rate at which infiltration occurs. Factors that affect infiltration Precipitation Precipitation can impact infiltration in many ways. The am ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biodiversity
Biodiversity or biological diversity is the variety and variability of life on Earth. Biodiversity is a measure of variation at the genetic (''genetic variability''), species (''species diversity''), and ecosystem (''ecosystem diversity'') level. Biodiversity is not distributed evenly on Earth; it is usually greater in the tropics as a result of the warm climate and high primary productivity in the region near the equator. Tropical forest ecosystems cover less than 10% of earth's surface and contain about 90% of the world's species. Marine biodiversity is usually higher along coasts in the Western Pacific, where sea surface temperature is highest, and in the mid-latitudinal band in all oceans. There are latitudinal gradients in species diversity. Biodiversity generally tends to cluster in hotspots, and has been increasing through time, but will be likely to slow in the future as a primary result of deforestation. It encompasses the evolutionary, ecological, and cultural ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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