lawn
Grassland is a kind of earth ecosystem, which is divided into tropical grassland and temperate grassland, and it is the most widely distributed vegetation type on the earth. The reason for the formation of grassland is that when the soil layer is thin or there is little precipitation, herbaceous plants are less affected, while woody plants cannot grow widely.
China is one of the countries with the richest grassland resources in the world, with a total grassland area of nearly 400 million hectares, accounting for 40% of the total land area, which is three times of the existing cultivated land area.
Dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland dry grassland.
Knowledge expansion:
Broadly speaking, grasslands include vegetation dominated by herbs formed in a relatively arid environment, mainly including tropical grasslands (savanna) and temperate grasslands. Grassland in a narrow sense only includes temperate grassland. Because there are quite a few trees on the savanna, and there are many kinds.
Grassland is a plant cover type, which is usually distributed in chestnut soil and chernozem area with annual precipitation of 200 ~ 300mm, and is a herbaceous plant community composed of xerophytes or moderately xerophytes. Its dominant plants are perennial tufted or rhizomatous grasses and some more or less drought-tolerant weeds.
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.
The plants are evenly distributed and the layers are not obvious. Grass height 15-20cm, coverage 30%-50%, low grass yield. Suitable for livestock such as pasture, cattle, sheep and horses in summer.