The role of green plants in the biosphere

Greenery is an ecosystem.

can be used by photosynthesis.

The sunlight energy emitted by the sun is converted into chemical energy, and inorganic substances such as carbon, hydrogen, and oxygen are passed through chlorophyll.

Synthetic organic matter provides the necessary food source and living environment for heterotrophs such as animals, microorganisms and humans who cannot synthesize organic matter by themselves. It is also able to increase the amount of precipitation.

Conserve soil and water. Green plants are the "energy converters" of green.

Greenery is an automatic "air purifier".

Greenery is a natural "reservoir".

The role of green plants in the biosphere

1. Green "energy converter".

The food is greenery. The role of green plants in the biosphere is to provide matter and energy to other living beings.

Second, the automatic "air purifier."

There are a wide variety of green plants scattered on the earth, and they are constantly photosynthesizing and consuming carbon dioxide from the atmosphere.

The oxygen produced enters the atmosphere in the form of gases, so that the concentration of oxygen and carbon dioxide in the air in the biosphere is in a relatively stable equilibrium, referred to as carbon-oxygen balance.

3. Natural "reservoir".

Green plants in the water cycle.

The role in is; On the one hand, the transpiration of plants increases atmospheric humidity and precipitation, thus promoting the water cycle in the biosphere. On the other hand, slowing down runoff and increasing the underground water content play an important role in maintaining water balance.

Green plants are the most important group of organisms in the biosphere, and they play a decisive role in the existence and development of the biosphere. Green plants provide food and energy directly or indirectly to other organisms through their life activities, and play an important role in maintaining the carbon-oxygen balance and water cycle in the biosphere.

Plants are inseparable from human survival and living relationships.

1. Plants are the main food for humans. Humans need a large number of plants to serve as food, including food provided by crops; edible oils provided by cash crops; Fruit trees and fruits provided by economic plants and much more.

2. Plants provide important raw material resources for human life. Cotton and linen plants provide textile raw materials for human wear; Timber provides building materials for human settlements, building houses, building bridges, etc.

3. Plants provide a large amount of feed for livestock and animal products needed by human beings, and the main energy supply of animals lies in plants, and animals will die because of lack of energy without plants.

Fourth, plants form a forest scale and are the purifiers of the air. Forest plants grow 15-50% less sulphur dioxide in the air than in open land. In the summer of high temperature and humidity, the absorption rate of sulfur dioxide by forest plants will increase with the vigorous physiological activity of forest trees.

The relative humidity is above 85%, and the rate of absorption of sulfur dioxide by forest plants is 5-10 times faster than that of 15% relative humidity. Humans need to breathe oxygen, while plants can absorb carbon dioxide and exhale it. The oxygen released by plant photosynthesis is supplied to humans.

5. Forest plants have a regulating effect on climate. The dense canopy of forest plants absorbs, scatters, and reflects some of the solar radiation energy in summer, reducing ground warming. Because the roots of the forest trees go deep into the ground, they continuously absorb the water in the deep soil for the transpiration of the trees, so that the forest normally forms fog and increases precipitation.

Without plants, soil erosion leads to greater water scarcity and less arable land. Plants also regulate the global environment.

6. Plants themselves have the function of conserving water, and the decay layer of dead branches and leaves on the surface of plants is increasing, forming a thick humus layer, which has the functions of strong water absorption, delaying runoff and weakening flood peaks. The canopy of the tree has a trapping effect on rainwater, which can reduce the impact of rainwater on the ground and maintain water and soil. The canopy can hold back 10-20% of precipitation, most of which evaporates into the atmosphere, and the rest falls to the ground or seeps into the soil along the trunk of trees to become groundwater.

7. Plants in complex ecosystems, as producers, support the existence of various biological chains. Plants are the main source of energy, an important part of the energy cycle, and the main body to maintain the balance of the ecosystem.

The emergence and development of human beings have always been accompanied by plants; People's perception of plants has undergone a process of constant change. Human beings rely on the minimum living conditions provided by plants, such as perching, feeding, laboring, etc., and plants will quickly be fatal to human survival once they are lacking, and no matter the survival or living environment, they all restrict the safety of human beings.

Green plants act as producers and as the building blocks of ecosystems, providing organic matter for other components of the biosphere to maintain the stability of the biosphere; The production of oxygen, the absorption of carbon dioxide, and the improvement of the gas composition of the atmosphere are used to maintain the stability of the atmosphere and also to maintain the stability of the biosphere;

In biological evolution, the oxygen provided by green plants generated the ozone layer, which provided favorable conditions for "aquatic to terrestrial" in biological evolution.

In order for animals to consume oxygen and exhale carbon dioxide, they must rely on green plants to photosynthesize to maintain the balance of oxygen and carbon dioxide in the earth's atmosphere. The vast majority of human food comes directly (grains, vegetables, fruits) or indirectly (meat) from green plants.