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Zoigê Marsh
The Zoigê Marsh (), also known as the Ruoergai Marsh or the Songpan Grasslands, is located in the eastern part of the Tibetan Plateau and forms the largest high-altitude marsh area in the world.Shuang Xiang, Ruqing Guo, Ning Wu, Shucun Sun, Current status and future prospects of Zoige Marsh in Eastern Qinghai-Tibet Plateau, Ecological Engineering 35: 553-562 Location The marsh areas are mainly located in northern Sichuan Province, but extend into southern Gansu and southeastern Qinghai. The marshes are formed in a region of poor drainage that is located between the watersheds of the Yellow and Yangtze Rivers. The marshes are located at an altitude of about 3,600 meters above sea level and cover an area of about 2,600 square kilometers. To east, they are bordered by the Min Mountains and to the west by the Amne Machin mountain range. Geology The marshes can be divided into four geomorphological regions: the Zoigê plateau plain, the Hong Yuan plateau mound, the A Ba pla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ramsar Convention
The Ramsar Convention on Wetlands of International Importance Especially as Waterfowl Habitat is an international treaty for the conservation and sustainable use of Ramsar sites (wetlands). It is also known as the Convention on Wetlands. It is named after the city of Ramsar in Iran, where the convention was signed in 1971. Every three years, representatives of the contracting parties meet as the Conference of the Contracting Parties (COP), the policy-making organ of the convention which adopts decisions (resolutions and recommendations) to administer the work of the convention and improve the way in which the parties are able to implement its objectives. COP12 was held in Punta del Este, Uruguay, in 2015. COP13 was held in Dubai, United Arab Emirates, in October 2018. List of wetlands of international importance The list of wetlands of international importance included 2,331 Ramsar sites in May 2018 covering over . The countries with most sites are the United Kingdo ... [...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] |
Wetlands Of China
A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (anoxic) processes prevailing, especially in the soils. The primary factor that distinguishes wetlands from terrestrial land forms or Body of water, water bodies is the characteristic vegetation of aquatic plants, adapted to the unique anoxic hydric soils. Wetlands are considered among the most biologically diverse of all ecosystems, serving as home to a wide range of plant and animal species. Methods for assessing wetland functions, wetland ecological health, and general wetland condition have been developed for many regions of the world. These methods have contributed to wetland conservation partly by raising public awareness of the functions some wetlands provide. Wetlands occur naturally on every continent. The water in wetlands is either freshwater, brackish or saltwater. The main wetland t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landforms Of Sichuan
A landform is a natural or anthropogenic land feature on the solid surface of the Earth or other planetary body. Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Landforms include hills, mountains, canyons, and valleys, as well as shoreline features such as bays, peninsulas, and seas, including submerged features such as mid-ocean ridges, volcanoes, and the great ocean basins. Physical characteristics Landforms are categorized by characteristic physical attributes such as elevation, slope, orientation, stratification, rock exposure and soil type. Gross physical features or landforms include intuitive elements such as berms, mounds, hills, ridges, cliffs, valleys, rivers, peninsulas, volcanoes, and numerous other structural and size-scaled (e.g. ponds vs. lakes, hills vs. mountains) elements including various kinds of inland and oceanic waterbodies and sub-surface features. Mountains, hills, plateaux, and plains are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cloud Seeding
Cloud seeding is a type of weather modification that aims to change the amount or type of precipitation that falls from clouds by dispersing substances into the air that serve as cloud condensation or ice nuclei, which alter the microphysical processes within the cloud. Its effectiveness is debated; some studies have suggested that it is "difficult to show clearly that cloud seeding has a very large effect." The usual objective is to increase precipitation (rain or snow), either for its own sake or to prevent precipitation from occurring in days afterward. Methodologies Salts The most common chemicals used for cloud seeding include silver iodide, potassium iodide and dry ice (solid carbon dioxide). Liquid propane, which expands into a gas, has also been used. This can produce ice crystals at higher temperatures than silver iodide. After promising research, the use of hygroscopic materials, such as table salt, is becoming more popular. When cloud seeding, increased snowfall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Environmental Issues In China
Environmental issues in China had risen in tandem with the country's rapid industrialisation, as well as lax environmental oversight especially during the early 2000s. China was ranked 120th out of the 180 countries on the 2020 Environmental Performance Index. The Chinese government has acknowledged the problems and made various responses, resulting in some improvements, but western media has criticized the actions as inadequate. In recent years, there has been increased citizens' activism against government decisions that are perceived as environmentally damaging, and a retired government official claimed that the year of 2012 saw over 50,000 environmental protests in China. Since the 2010s, the government has given greater attention to environmental protection through policy actions such as the signing of the Paris climate accord, the 13th Five-Year Plan and the 2015 Environmental Protection Law reform From 2006 to 2017, sulphur dioxide levels in China were reduced by 70 p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Long March
The Long March (, lit. ''Long Expedition'') was a military retreat undertaken by the Chinese Red Army, Red Army of the Chinese Communist Party (CCP), the forerunner of the People's Liberation Army, to evade the pursuit of the National Revolutionary Army, National Army of the Kuomintang, Chinese Nationalist Party (CNP/KMT). Strictly speaking, the Long March was a series of marches, as various Communist armies in the south escaped to the north and west. However, the most famous began in the Jiangxi (Jiangxi) province in October 1934 and ended in the Shaanxi province in October 1935. The First Front Army of the Chinese Soviet Republic, led by an inexperienced military commission, was on the brink of annihilation by Generalissimo Chiang Kai-shek's troops in their stronghold in Jiangxi province. The CCP, under the eventual command of Mao Zedong and Zhou Enlai, escaped in a circling retreat to the west and north, which reportedly traversed over over 370 days.Zhang, Chunhou. Vaughan, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amne Machin
Amne Machin, Anyi Machen, or Anyê Maqên ("Grandfather Pomra") is the highest peak of a mountain range of the same name in the southeast of Qinghai province, China. It is revered in Tibetan Buddhism as the home of the chief indigenous deity of Amdo, Machen Pomra. Geography The entire Amne Machin range is an eastern extension of the Kunlun Mountains, a major mountain system of Asia. The Amne Machin range runs in the general northwest-to-southeast direction in eastern Qinghai ( Golog Tibetan Autonomous Prefecture and the adjacent areas of the Hainan Tibetan Autonomous Prefecture) and the southwestern corner of Gansu's Gannan Tibetan Autonomous Prefecture. The existence of the ridge results in one of the great bends of the Yellow River. The river first flows for several hundreds of kilometers toward the east and southeast, along the south-western side of the Amne Machin Range. In so doing it crosses the entire length of Golog Prefecture, and reaches the borders of Gansu and Sichu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Min Mountains
Min Mountains or Minshan () are a mountain range in central China. It runs in the general north-south direction through northern Sichuan (the eastern part of the Ngawa Tibetan and Qiang Autonomous Prefecture and adjacent areas of Mianyang Prefecture-level city) and southernmost borderlands of Gansu. The highest elevation is Mount Xuebaoding ("Snow Treasure Peak"), 5588 m and the second highest is Mt Little Xuebaoding ("Little Snow Treasure Peak"), 5443m. Geography The Min mountain range is a southern prolongation of the Kunlun Mountains that separates the basins of two major rivers of Sichuan: the Min River (to the west) and the Jialing River (to the east). Both rivers flow in the general southern direction, and are tributaries of the Yangtze. The Min Mountains are part of a wider mountainous region: * Amne Machin: The range located to the far west, known to the ancient Chinese as Mount Jishi (積石山, 积石山, Jīshíshān), part of the Kunlun Mountains. *Xiqing Moun ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yangtze River
The Yangtze or Yangzi ( or ; ) is the longest list of rivers of Asia, river in Asia, the list of rivers by length, third-longest in the world, and the longest in the world to flow entirely within one country. It rises at Jari Hill in the Tanggula Mountains (Tibetan Plateau) and flows in a generally easterly direction to the East China Sea. It is the List of rivers by discharge, seventh-largest river by discharge volume in the world. Its drainage basin comprises one-fifth of the land area of China, and is home to nearly one-third of the demographics of China, country's population. The Yangtze has played a major role in the history of China, history, culture of China, culture, and economy of China. For thousands of years, the river has been used for water, irrigation, sanitation, transportation, industry, boundary-marking, and war. The prosperous Yangtze Delta generates as much as 20% of historical GDP of China, China's GDP. The Three Gorges Dam on the Yangtze is the list ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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