Grassland is mainly planted with herbs and shrubs, which is suitable for the development of animal husbandry. It has a unique ecosystem and is a renewable natural resource. The grassland area in the world accounts for about half of the total land area, which is the most basic means of production and base for developing grassland animal husbandry.
Grassland is a compound plant community, which consists of grass, flowering plants and light-loving plants. The ratio of flowering plants to light-loving plants has changed. Lawn has been kept in a low state for a long time, while grass with rich species can only be pruned once or twice a year, and grass with few species can be pruned many times a year, sometimes as many as six times.
Grassland plants can absorb carbon dioxide in the air through photosynthesis and release oxygen in the process of material circulation. Some grasses can purify the dust in the air. They can absorb the dust and some toxic gases in the air and convert them into protein or nontoxic salts.
The secretion of grassland has certain bactericidal effect, especially in eliminating urban noise. When the noisy noise reached the dense grassland, most of it disappeared. Grassland is of great benefit to human health, and green can reduce intraocular pressure.
In the grassland ecosystem, grass is the only primary producer, which plays a key role in the material cycle and energy transformation of the whole ecosystem and is the foundation of the grassland ecosystem. Once the grassland is destroyed, the energy transmission of the ecosystem will be blocked and the whole ecosystem will be destroyed.
Grassland can also play a role in filtering and purifying air.
Grassland is like the lungs of a city. It can absorb a lot of carbon dioxide, release oxygen, stop flying dust and absorb all kinds of harmful gases, thus playing a role in filtering and purifying the air. Grassland also plays an important role in purifying the air and beautifying the environment.
Grassland is one of the natural barriers to maintain the land environment, which plays a very important role in the sustainable development of human society, and it is of great significance to protect the grassland ecosystem.