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Lake Rawa Pening
Rawa Pening (literally meaning 'Clear Swamp', from the Javanese ''Bening'') is a lake in the Ambarawa Basin in Central Java, Indonesia. It serves as a source of power, irrigation, and flood control, and is used for fishing. Due partly to high numbers of aquatic plants, it may dry out by 2021. Location and description Rawa Pening is located in the volcanic Ambarawa Basin in Central Java, between Ambarawa and Salatiga. It covers a total area of . It is shallow and swamplike, with muddy banks. History Rawa Pening is estimated to have been formed between 18,000 and 13,500 BC after a period of increased precipitation. It reached its largest size from 11,000 to 9,000 BC, but shrank until it reached its current size around 6,000 BC. In order to protect Rawa Pening, the local government has enacted a green belt policy. Several establishments, such as the tourist attraction Kampoeng Rawa, were controversial owing to their construction within this belt. Role One of the major ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ambarawa Basin
Ambarawa is a town (and administratively, a district of the Semarang Regency) located between the city of Semarang and Salatiga in Central Java, Indonesia. Administratively, it is bordered by the districts of Banyubiru to the south, Jambu to the west, Bandungan to the north, and Bawen to the east. During colonial times, Ambarawa was an important railway hub connecting through regions in Java as far as Yogyakarta and Magelang. The Semarang-Ambarawa-Magelang line was fully operational until 1977. It is the site of the Indonesian Railway Museum (''Museum Kereta Api Ambarawa''), which features a section of rack railway between Ambarawa to Bedono on the former Ambarawa-Magelang mainline. The 19th-century Fort Willem I penitentiary complex and military barrack is also located in Ambarawa. Japanese internment camps Ambarawa was the site of Japanese internment camps where up to 15,000 Europeans had been held during the Japanese occupation during World War II. Following Japanese ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salvinia Cucullata
''Salvinia'', a genus in the family Salviniaceae, is a floating fern named in honor of Anton Maria Salvini, a 17th-century Italian scientist. Watermoss is a common name for ''Salvinia''. The genus was published in 1754 by Jean-François Séguier, in his description of the plants found round Verona, ''Plantae Veronenses'' Twelve species are recognized, at least three of which (''S. molesta'', ''S. herzogii'', and ''S. minima'') are believed to be hybrids, in part because their sporangia are found to be empty. ''Salvinia'' is related to the other water ferns, including the mosquito fern ''Azolla''. Recent sources include both ''Azolla'' and ''Salvinia'' in Salviniaceae, although each genus was formerly given its own family. ''Salvinia'', like the other ferns in order Salviniales, are heterosporous, producing spores of differing sizes. However, leaf development in ''Salvinia'' is unique. The upper side of the floating leaf, which appears to face the stem axis, is morphologically ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semarang Regency
Semarang is a landlocked Regencies of Indonesia, regency ( id, kabupaten) in Central Java province in Indonesia. It covers an area of 950.207 km2 and had a population of 930,727 at the 2010 census,Biro Pusat Statistik, Jakarta, 2011. 999,817 at the 2015 census and 1,053,094 at the 2020 census.Badan Pusat Statistik, Jakarta, 2021. These figures exclude the independent cities of Semarang and Salatiga, which are administratively separate from the regency. The regency's capital is Ungaran, which lies immediately to the south of Semarang City. Geography Administratively, Semarang Regency borders Kendal Regency and Temanggung Regency in the west, Boyolali Regency and Magelang Regency in the south, Grobogan Regency and Demak Regency in the east, and Semarang, the city of Semarang in the north. Salatiga City, meanwhile, forms an enclave within the regency, and is administratively separate. Geographically, it is located between 110°14′54,74″–110°39'3"E and 7°3'57"–7°30'S. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbicide
Herbicides (, ), also commonly known as weedkillers, are substances used to control undesired plants, also known as weeds.EPA. February 201Pesticides Industry. Sales and Usage 2006 and 2007: Market Estimates. Summary in press releasMain page for EPA reports on pesticide use ihere Selective herbicides control specific weed species, while leaving the desired crop relatively unharmed, while non-selective herbicides (sometimes called total weedkillers in commercial products) can be used to clear waste ground, industrial and construction sites, railways and railway embankments as they kill all plant material with which they come into contact. Apart from selective/non-selective, other important distinctions include ''persistence'' (also known as ''residual action'': how long the product stays in place and remains active), ''means of uptake'' (whether it is absorbed by above-ground foliage only, through the roots, or by other means), and ''mechanism of action'' (how it works). Historica ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grass Carp
The grass carp (''Ctenopharyngodon idella'') is a species of large herbivorous freshwater fish in the family Cyprinidae, native to the Pacific Far East, with a native range stretching from northern Vietnam to the Amur River on the Sino-Russian border.Mandrak and Cudmore. 2004''Biological Synopsis of Grass Carp (Ctenopharyngodon idella)''. This Asian carp is the only species of the genus ''Ctenopharyngodon''. Grass carp are resident fish of large turbid rivers and associated floodplain lakes/wetlands with a wide range of temperature tolerance, and spawn at temperatures of . It is cultivated as a food fish in China for centuries, but was introduced in Europe and the United States for aquatic weed control, becoming the fish species with the largest reported farmed production globally, over five million tonnes per year. [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deposition (geology)
Deposition is the geological process in which sediments, soil and rocks are added to a landform or landmass. Wind, ice, water, and gravity transport previously weathered surface material, which, at the loss of enough kinetic energy in the fluid, is deposited, building up layers of sediment. Deposition occurs when the forces responsible for sediment transportation are no longer sufficient to overcome the forces of gravity and friction, creating a resistance to motion; this is known as the null-point hypothesis. Deposition can also refer to the buildup of sediment from organically derived matter or chemical processes. For example, chalk is made up partly of the microscopic calcium carbonate skeletons of marine plankton, the deposition of which has induced chemical processes (diagenesis) to deposit further calcium carbonate. Similarly, the formation of coal begins with the deposition of organic material, mainly from plants, in anaerobic conditions. Null-point hypothesis The null ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Semarang
Semarang ( jv, ꦏꦸꦛꦯꦼꦩꦫꦁ , Pegon: سماراڠ) is the capital and largest city of Central Java province in Indonesia. It was a major port during the Dutch colonial era, and is still an important regional center and port today. The city has been named as the cleanest tourist destination in Southeast Asia by the ASEAN Clean Tourist City Standard (ACTCS) for 2020–2022. It has an area of and is located at . The population of the city was 1,555,984 at the 2010 censusBiro Pusat Statistik, Jakarta, 2011. and 1,653,524 at the 2020 census,Badan Pusat Statistik, Jakarta, 2021. making it Indonesia's ninth most populous city after Jakarta, Surabaya, Bekasi, Bandung, Medan, Depok, Tangerang and Palembang. The built-up urban area had 3,183,516 inhabitants at the 2010 census spread over two cities and 26 districts. The Semarang metropolitan area (a.k.a. ''Kedungsepur'') has a population of over 6 million in 2020 (''see Greater Semarang section''). The population of the cit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diponegoro University
Diponegoro University ( jv, ꦈꦤꦶꦥ꦳ꦼꦂꦱꦶꦠꦱ꧀ꦢꦶꦥꦤꦼꦒꦫ; id, Universitas Diponegoro, abbreviated as Undip) is a public university in Semarang, Central Java, Indonesia. Founded in 1957 as a private university by the Semarang University Foundation, which later in 1960 became public university, and named after Javanese Prince Diponegoro. It is a pioneer of higher learning institutions in Indonesia and the first and oldest education corporation in Central Java. Nationally, Undip is in sixth position in Ministry of Research, Technology and Higher Education's 2017 ranking and is one of the top 1,000 universities in the world by the 2019 QS World University Rankings. History In the early 1950s, people in Central Java, especially in Semarang, needed a university to provide higher education learning and teaching facilities. It has been purpose to support of government in handling and in conducting all sectors of development, especially in the field ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peat
Peat (), also known as turf (), is an accumulation of partially decayed vegetation or organic matter. It is unique to natural areas called peatlands, bogs, mires, moors, or muskegs. The peatland ecosystem covers and is the most efficient carbon sink on the planet, because peatland plants capture carbon dioxide (CO2) naturally released from the peat, maintaining an equilibrium. In natural peatlands, the "annual rate of biomass production is greater than the rate of decomposition", but it takes "thousands of years for peatlands to develop the deposits of , which is the average depth of the boreal orthernpeatlands", which store around 415 gigatonnes (Gt) of carbon (about 46 times 2019 global CO2 emissions). Globally, peat stores up to 550 Gt of carbon, 42% of all soil carbon, which exceeds the carbon stored in all other vegetation types, including the world's forests, although it covers just 3% of the land's surface. ''Sphagnum'' moss, also called peat moss, is one of th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Floating Islands
A floating island is a mass of floating aquatic plants, mud, and peat ranging in thickness from several centimeters to a few meters. Floating islands are a common natural phenomenon that are found in many parts of the world. They exist less commonly as an artificial phenomenon. Floating islands are generally found on marshlands, lakes, and similar wetland locations, and can be many hectares in size. Natural occurrences Sometimes referred to as ''tussocks'', ''floatons'', or ''suds'', natural floating islands are composed of vegetation growing on a buoyant mat of plant roots or other organic detritus. In aquatic regions of Northwestern Europe several hundred hectares or thousand acres of floating meadows (German ''Schwingrasen'', Dutch ''trilveen'') have been preserved, which are partly used as agricultural land, partly as nature reserves. They typically occur when growths of cattails, bulrush, sedge, and reeds extend outward from the shoreline of a wetland area. As the wate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrilla Verticillata
''Hydrilla'' (waterthyme) is a genus of aquatic plant, usually treated as containing just one species, ''Hydrilla verticillata'', though some botanists divide it into several species. It is native to the cool and warm waters of the Old World in Asia, Africa and Australia, with a sparse, scattered distribution; in Australia from Northern Territory, Queensland, and New South Wales.Flora Europaea''Hydrilla''/ref>Flora of Taiwan''Hydrilla''Australian Plant Name Index''Hydrilla''/ref> The stems grow up to 1–2m long. The leaves are arranged in whorls of two to eight around the stem, each leaf 5–20 mm long and 0.7–2 mm broad, with serrations or small spines along the leaf margins; the leaf midrib is often reddish when fresh. It is monoecious (sometimes dioecious), with male and female flowers produced separately on a single plant; the flowers are small, with three sepals and three petals, the petals 3–5 mm long, transparent with red streaks. It reproduces prim ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eichhornia Crassipes
''Pontederia crassipes'' (formerly ''Eichhornia crassipes''), commonly known as common water hyacinth is an aquatic plant native to South America, naturalized throughout the world, and often invasive species, invasive outside its native range.''Pontederia crassipes'' Kew Royal Botanic Gardens Plants of the World Online. Accessed April 19, 2022.''Eichhornia crassipes'' Kew Royal Botanic Gardens Plants of the World Online. Accessed April 19, 2022. June 15, 2016. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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