The information of grassland should be brief.

Vegetation:

Grassland can be divided into broad sense and narrow sense:

Broadly speaking, it includes vegetation dominated by herbs formed in a relatively arid environment, mainly including tropical grassland (savanna) and temperate grassland.

Grassland in a narrow sense only includes temperate grassland. Because there are many trees on the savanna.

The following mainly introduces the narrow grassland, and the tropical grassland can refer to the corresponding entry.

Zonal vegetation types composed of perennial herbs in temperate semi-arid to semi-humid environment. Leng Xia is warm in winter in grassland area, with less precipitation and strong evaporation. The weak leaching of soil and the developed calcification process limit the growth of tall trees. The community structure of grassland plants is simple and seasonal. There are mainly xerophytic grasses with narrow leaves, such as cryptospermum, Stipa, Pinctada and other genera, as well as compositae, Leguminosae, Cyperaceae and some rhizome grasses. According to different hydrothermal conditions, grasslands can be divided into typical grasslands, desertified grasslands and meadow grasslands. Typical grassland is the most widely distributed type in grassland, which consists of typical xerophytes, mainly tufted grasses, accompanied by a small number of xerophytes and moderately xerophytes, small shrubs and shrubs. Desertification grassland is the most arid type, which is composed of grasses with strong xerophytes, and a large number of ultra-xerophytic desert shrubs and small semi-shrubs are mixed. Meadow grassland is a humid type of grassland, which is composed of mesophytes, often mixed with a large number of mesophyte or mesophyte dicotyledonous weeds, rhizomatous grasses and Carex. According to the thermal ecological conditions, grassland can be divided into temperate grassland, warm temperate grassland and alpine grassland. Under the condition of unstable water state and drought salinization, saline-alkali wet grassland or alkalized grassland will also be formed. In temperate regions of Eurasia and North America, the Eurasian-North American global grassland belt is formed between forest belt and desert belt. South South America and subtropical Africa also have a certain area of grassland, but it is far less developed than the northern hemisphere. In China, grasslands are widely distributed in the western part of Northeast China, Inner Mongolia, the northern part of the Loess Plateau, the mountainous areas in the northwest desert area and most areas of the Qinghai-Tibet Plateau. In addition, grasslands can also appear outside the mountains in desert areas and occupy a corresponding position in the vertical belt spectrum.

A plant community consisting mainly of hardy perennial herbs (sometimes xerophytes). Distributed in temperate zone, it is a zonal vegetation type. The annual rainfall in grassland area is less, mostly concentrated in summer and autumn, with little snow and severe cold in winter, which has obvious continental climate. Plants are mainly tufted grasses, such as Stipa and Festuca. In addition, Cyperaceae, Leguminosae, Compositae and Chenopodiaceae account for a considerable proportion. Chinese grassland is a part of Eurasian grassland, which reaches the Loess Plateau from the northeast through Inner Mongolia, showing a continuous zonal distribution. In addition, it is also found in the Qinghai-Tibet Plateau, the piedmont area of Altai Mountain in Xinjiang and mountainous areas in desert areas, starting at 5 1 degree north latitude and reaching 35 degrees north latitude in the south. According to biological and ecological characteristics, it can be divided into four types:

① Meadow grassland;

② Flat grassland (typical grassland);

③ Desert grassland;

④ Alpine grassland. There are many excellent pastures growing on the grassland, which is an important animal husbandry base. In addition, there are many medicinal plants in grassland vegetation, which can be harvested and utilized.

Flooded grassland is also called floodplain grassland. Refers to the large area or narrow flat grassland around the lake, the beaches on both sides of the river and the valley at the foot of the mountain formed by long-term flood, sediment deposition, or river overflow and sediment deposition. Due to the frequent backflow and flooding of seawater and the continuous deposition of sediment, a large area of beach grassland has also formed along the coast. The flooded grassland is mainly distributed in the lower reaches of rivers, around lakes and coastal beaches. The soil is muddy meadow soil and lacustrine soil, and the beach is saline-alkali soil with deep and fertile soil layer. Vegetation is dominated by aquatic and hygrophytic plants, mainly including reed, Cyperaceae, Potamogeton crispus, Commelina communis, Spartina japonica, Zoysia japonica, Swertia japonica, Artemisia halophila, Suaeda salsa and Spartina japonica. Grass-based grassland has high yield, high quality and good palatability, and is suitable for grazing or mowing. The grass quality of Artemisia halophila grassland is poor and its feeding value is small.

Vegetative grassland developed under drought conditions is called desert grassland or desert grassland, in which true xerophytes are dominant and xerophytes play an obvious role. Habitat and plant types are characterized by the transition from grassland to desert. It is distributed in central and northern Inner Mongolia, central and western Ordos Plateau, western grassland and central Ningxia, eastern Gansu, western and northern Loess Plateau and low slope of Xinjiang. The soil is light chestnut soil, brown calcareous soil and light calcareous soil with thin humus layer. Vegetation has obvious xerophytic characteristics and few species, mainly composed of Stipa crassifolia, Stipa psammophila and Stipa Gobi, Artemisia xerophyte, cryptophytes, algae and annuals. The plant is 23 cm -30 cm high, with a coverage of 30%-40%, and the grass yield is low, with only 2-3 kg of hay per hectare, which is suitable for sheep and horses to graze.

Above 4000 meters above sea level, the vegetation grassland which is mainly composed of alpine and arid perennial tufted grasses developed under cold, dry and windy conditions is called alpine grass. It is distributed in the north, northeast and northwest of Qinghai-Tibet Plateau and the upper parts of Kunlun Mountain, Tianshan Mountain and Qilian Mountain. Mix cushion plants, creeping plants and alpine shrubs, such as plum blossom, Paris polyphylla, Saxifraga, juniper and so on. The plants are evenly distributed and the layers are not obvious. Grass height 15cm-20cm, coverage 30%-50%, low grass yield. Suitable for livestock such as pasture, cattle, sheep and horses in summer.

Paragraph 2 of Article 2 of the Grassland Law stipulates that grasslands mentioned in this Law refer to natural grasslands and artificial grasslands. Natural grassland refers to a land type, which is a multifunctional natural complex composed of herbs and woody forage plants and the land they planted. Artificial grassland refers to the grassland planted or improved by selecting suitable grass species and artificial measures.

Grassland characteristics

1. Open and flat, wide field of vision, suitable for Mercedes-Benz.

2. There are obvious dry and wet seasons.

3. The rainfall is about 250 ~ 750 mm..

Characteristics of grassland dwellers

1. Good eyesight

2. Sensitive sense of smell and hearing and good running limbs

3. Huge, with a unique physique and life.

Zoige Prairie is located in the northwest of China, at the junction of Sichuan, Gansu and Qinghai provinces. It consists of four counties: Zoige, Aba, Hongyuan and Rangtang. It is one of the five grasslands in China, covering an area of more than 35,600 square kilometers. It is a Tibetan settlement mainly based on animal husbandry.

There is the largest grassland in Sichuan province, covering an area of nearly 30 thousand square kilometers, which is composed of meadow grassland and swamp. The grassland is flat, endless and sparsely populated. The Red Army's 25,000-mile Long March passed here many times, leaving many touching stories and revolutionary sites, making this grassland famous at home and abroad.

Summer is the golden season of grassland, where the sky is crisp and the visibility is high. Between heaven and earth, green grass, birds and flowers, endless. The grass is dotted with countless small lakes, which are blue, and small rivers connect large and small lakes in series like vines. The river is crystal clear, and there are countless fish. Grassland tour is rich in content. You can enjoy the grassland scenery, listen to melodious pastoral songs, fish and have a picnic by the Yellow River, ride horses on the grassland and enjoy sika deer pasture. You can go to the Range Rover at the first bend of the Yellow River, stay in Rongpeng Hotel, pick wild mushrooms in the forest, or go to the temple to worship God.

Grassland is about 3500 meters to 4000 meters above sea level, belonging to a typical hilly plateau. Winter is cold, summer is cool, spring and autumn are short, sunshine is sufficient, and the temperature difference between day and night is large. The annual average temperature is 7 degrees Celsius, and July is the hottest. The monthly average temperature is about 10℃-12.7℃.

Zoige Prairie is rich in aquatic plants, and the original ecological environment is well protected, forming a beautiful and charming grassland scenery. The famous grasslands are Garba Grassland, Songpan Grassland and Hongyuan Grassland.

The Xilamuren Grassland is a famous tourist attraction at home and abroad. It welcomes the warm wind of Hohhot in the south and rings the bell of Bailing Temple in the north. Because the Lama named Puhui Temple in Qing Dynasty stood by the river, it was also called Zhao He. In the summer and autumn of the grassland, there are fragrant flowers and grass everywhere, and the charming scenery makes people relaxed and happy. Sheep, horses, cows, camels, in droves, galloping or roaming, like rosy clouds flying in the sky, like pearls and agates scattered by fairies, landed on the banks of the Xilamuren River with silver chains. In the herdsmen's yurts, the hospitable Mongolian host will hold out fresh and clean milk food, fat mutton, refreshing fried rice and mellow milk tea for the guests, and the unique flavor of grassland food will penetrate into your heart.

Air grassland is located between Laiyuan Basin and Yuxian Basin, 26 kilometers northwest of Laiyuan County. It is divided into two parts, north and south, connected by mountains and ridges in the middle, with a total area of 29 square kilometers, belonging to Yuxian, Laiyuan and Lingqiu counties respectively.

The grassland is at the top of a huge Pingdingshan, 2 158 meters above sea level. There are steep slopes all around the mountain, but the top of the mountain covers an area of 36,000 mu. This is a vast grassland full of rocks, green grass and wild flowers. Cool breeze blows blue sea flowers and white clouds swim around, so you can "touch white clouds with your hands and step on flowers and plants with your feet".