People often say that the world's three grasslands are actually connected with the grasslands of the former Soviet Union and China, and they all belong to the Eurasian grassland area. Australia lies in the tropics and subtropics. The grasslands in the world are mainly divided into three grassland areas, namely, Eurasian grassland area, North American grassland area and South American grassland area, while the grassland area in Africa is smaller. 1. Eurasian grassland Eurasian grassland is the largest grassland area in the world. It starts from the lower reaches of the Danube in Europe in the west, passes through Romania, Russia, Kazakhstan and Mongolia, and reaches the northeast of China. East-west extension 1 10 longitude. The northern part is the cold temperate coniferous forest belt, and the southern part is the Eurasian desert. About 45-55 degrees north latitude. It extends from east to west to the northeast of China, and turns southwest to the south of Qinghai-Tibet Plateau due to the southeast coast of China. The representative type of Eurasian grassland is the tufted grassland of various needle-built groups. Eurasian grassland is divided into three subregions, namely, Black Sea-Kazakhstan subregion, Central Asia subregion and Qinghai-Tibet Plateau subregion. The Black Sea-Kazakhstan subregion is located in the western half of the Eurasian grassland, and its eastern boundary roughly coincides with that of China, Xinjiang and Kazakhstan. Due to the influence of Mediterranean climate, spring is warm and humid, with two growth peaks in spring and autumn, and short-lived and short-lived plants develop in spring. Central Asia is located in the northeast of Eurasian grassland, mainly including Mongolian Plateau, Songliao Plain and Loess Plateau. Due to the drought in spring, there is only one growth peak in summer all year round, and there is a lack of short-lived and short-lived plants in spring. The Qinghai-Tibet Plateau subregion is the highest grassland area in the world, which belongs to alpine grassland type, and alpine cushion plants often appear in the community. Eurasian grassland is not only the largest and most important grassland on the earth, but also the best preserved grassland at present. 2. North American Prairie Area The North American Prairie is also known as Puglelli. Located in the middle of the North American continent, it runs through the north and south along the mountain direction, spanning about 30 latitudes. And things are long and narrow, no more than 20 longitudes. With the increase of dryness, from high grass pugglinide, mixed pugglinide to short grass pugglinide. It is roughly equivalent to meadow grassland, typical grassland and desert grassland in Eurasia grassland. The North American Prairie used to be a very fertile prairie with herds of bison. A black storm swept across the United States in 1934 due to large-scale reclamation in history. 3. South American Prairie Area The South American Prairie is also called pampas Prairie. Include central and eastern Argentina, Uruguay and southern Brazil. Small area, mostly cultivated. Top ten grasslands in the world. Com/news 2006-3-27 Source: Dahe. com. Com comments 0 scenery China March 27th news 1. The most "luxurious" grassland The grassland with the most complex composition, the most gorgeous landscape, the highest yield and the best natural conditions in all grasslands in the world is not elsewhere, but in the Hulunbeier League in eastern Inner Mongolia and the eastern Xilin Gol League and other similar areas. This is the temperate zone. Temperate meadow grassland is a type of vegetation in the transition from forest to grassland. Formed in a relatively humid climate, the annual precipitation is generally around 450 mm What is the soil? The species composition of grassland plants such as calcareous soil is quite complicated. Generally, there are five different plants per square meter, most of which require high water conditions, such as Stipa baicalensis, Sanguisorba officinalis, yellow flowers, shading sugarcane and so on. The height of meadow grassland plant community can reach 40-50 cm, and it can produce hay 1600-2400 kg per hectare, which is the highest yield type of temperate grassland. This grassland is a good animal husbandry base for developing cattle, horses and other large livestock. It is also an excellent place for grassland eco-tourism. However, this grassland has good natural conditions, so it has been reclaimed as farmland, and spring wheat and rape are planted on a large scale. Because of this, the meadow grassland has a small preservation area. Once reclaimed as farmland, serious degradation will inevitably occur. Inner Mongolia meadow grassland II. The most "typical" grassland Among so many types of grasslands, which grassland is the most typical and representative? The most typical is that its climate, plants, animals and soil can best represent the ecological environment of grassland. According to various studies, people agree that Stipa grandis typical grassland is the most representative type. Why? Because the natural conditions for the formation of Stipa grandis grassland are warm and semi-arid climate, the average annual precipitation is about 350 mm, and the soil is chestnut soil. Mainly distributed in the central part of Inner Mongolia Plateau. There are about 60 species of Stipa grandis grassland plants, about 15 species per square meter. There are mainly Stipa grandis, Leymus chinensis, Stipa krylovii, Artemisia frigida, Carex, Anemarrhena asphodeloides, Isatis indigotica and so on. The average height of this grassland is about 30 cm, and the grass yield per hectare is 1300-2000 kg. In terms of land use, it is mainly used for grazing, and some areas are used for grazing. However, if it is used for grazing, because the fruit glume of Stipa grandis has a strong awn needle, it often pierces the sheepskin.