Forest ecosystems and desert ecosystems are not easy to restore their original structure and functio

The stability of the ecosystem includes resistance stability and resilience stability. The simpler the trophic structure of the ecosystem, the lower the stability of resistance and the higher the stability of resilience, and the more complex the nutrient structure of the ecosystem, the stronger the stability of resistance and the weaker the stability of resilience.

The trophic structure of forest ecosystems is complex, and it is difficult to restore the original structure and function once it is destroyed.

Once forest ecosystems are destroyed, it is difficult to restore their original structure and function.

But it is more resistant and stable than desert ecosystems.

Forest ecosystems are less likely to regain their original structure and function than desert ecosystems. Resilience stability and resistance stability have an inverse relationship, and the better the resilience stability, the worse the resistance stability.

The resilience and stability of forest ecosystems are weaker than those of desert ecosystems, so it is not easy for them to restore their original structure and function

The self-regulation capacity of ecosystems is determined by the complexity of the trophic structure (i.e., food chains and food webs).

The more complex the nutrient structure (more food chains, larger food webs), the stronger the self-regulation capacity of the ecosystem.

The trophic structure of grassland ecosystems is simpler than that of forest ecosystems, so their self-regulation ability is weak.

Forest ecosystems are the basis for maintaining ecological balance. Under normal circumstances, there is no violent interference by external forces, and the energy flow and material circulation in the forest ecosystem are always carried out smoothly, and at the same time, the structure of the forest ecosystem also maintains a relatively stable state, which is called ecological balance.

1. The stabilizing role of forest ecosystems. After a long period of succession from simple to complex, the forest ecosystem finally formed a relatively stable state, and its species remained relatively stable in terms of species and quantity. The input and output of energy are nearly equal, that is, the energy flow and material circulation in the system can remain in equilibrium for a long time. At this time, the organisms in the system fill all the available space, and the environmental resources can be used in the most rational and efficient way.

Forest ecosystem is a kind of community that has developed to maturity, and its vertical stratification phenomenon is obvious, the structure is complex, and there are many species per unit area, each occupying favorable environmental conditions, living together in harmony with each other, and its productivity is also high, which plays a stabilizing role in ecological balance.

2. The regulatory role of forest ecosystems. The forest ecosystem has a certain internal regulation capacity, and the ecological balance is a dynamic balance, and its indicators, such as the amount of production, the type and quantity of organisms, are not fixed at a certain level, but change back and forth within a certain range. It also shows that forest ecosystems have the ability to self-regulate and maintain a state of equilibrium.

When an element of a forest ecosystem fails to function, its effects are offset by the system's adjustments. The energy flow and material cycle of forest ecosystems proceed through a variety of channels, and if one channel is blocked, the others will compensate. For example, in response to the invasion of pollutants, the forest ecosystem shows a certain self-purification ability, which is also the result of system regulation.

The more complex the structure of a forest ecosystem, the more avenues for energy flow and material circulation, and the stronger its ability to regulate, or resist external forces. Conversely, the simpler the structure, the weaker the ecosystem's ability to maintain balance.

3. The regenerative role of forest ecosystems. The ecological balance of forests is dynamic. In the process of biological evolution and community succession, it involves constantly breaking the old balance and establishing a new balance, which is the process and result of the regeneration of forest ecosystems.

Forest ecological balance is a relatively stable state of the structure and function of the ecosystem in a certain period of time, and its input and output of matter and energy are nearly equal, and can be restored to the original stable state through self-regulation (or human control) under external interference. When external disturbances exceed the self-control ability of the ecosystem and cannot be restored to its original state, the forest ecology is out of balance. Maintaining ecological balance is not only to maintain its original stable state, but also to regenerate the ecosystem to establish a new equilibrium under the beneficial influence of man, so as to achieve a more reasonable structure, more efficient functions and better ecological benefits.

That stabilizing effect is to maintain the ecological balance.

It is susceptible to anthropogenic disturbance and becomes desertified areas. The grassland ecosystem is a functional unity composed of the main biological community and environment of herbaceous plants. The grassland ecosystem is located in an arid area with low annual rainfall.

Grassland ecosystems are fragile and vulnerable to anthropogenic disturbance and become desertified areas. The grassland ecosystem is characterized by herbaceous plants, lack of tall trees, and obviously fewer species of animals and plants.

The degradation of grassland ecosystem is first manifested in the decline of vegetation height and biomass, the decrease of species number and state fissures, the gradual increase of the proportion of toxic, harmful or inedible plants, the gradual decrease of the number of wild animals, and the gradual increase of the number of rodent sail fissures. Then it is manifested in the gradual deterioration of the physical and chemical properties of the soil, and the appearance of bald spots or desertification on the surface.

Summary. There are many forest species and a vast area, so that its ecosystem has an important role and status in the global ecological system, which can not only provide people with a certain living space and security, but also promote the continuous progress and development of human beings. Forests can not only provide resources for trees and other forest products, but also have the functions of maintaining forest water and soil, preventing wind and sand, regulating climate, and beautifying nature.

When the forest ecosystem with very rich plants is greatly reduced, the habitat of animals will also be greatly reduced, and the forest is the producer of the ecosystem to provide organic matter for other organisms, without which the animal will lack food, destroying the food chain and causing many wild animals to be endangered.

Forest ecosystems are examples of how important biodiversity is in forest ecosystems.

Biodiversity refers to a stable ecological complex formed by the regular combination of a variety of living organisms (animals, plants, microorganisms) within a certain range. It includes the diversity of animals, plants and microorganisms, the diversity of genetics and variation of species, and the diversity of ecosystems. It is usually composed of three components: genetic diversity, species diversity and ecosystem diversity.

There are many forest species and a vast area, so that its ecosystem has an important role and status in the global ecological system, which can not only provide people with a certain living space and security, but also promote the continuous progress and development of human beings. Forests can not only provide resources for trees and other forest products, but also have the functions of maintaining forest water and soil, preventing wind and sand, regulating climate, and beautifying nature. When the forest ecosystem with very rich plants is greatly reduced, the habitat of animals will also be greatly reduced, and the forest is the producer of the ecosystem to provide organic matter for other organisms, without which the animal will lack food, destroying the food chain and causing many wild animals to be endangered.

The forest ecosystem is known as the "green reservoir" and "the lungs of the earth". Forest ecosystems are distributed in wetter areas and have a wide variety of flora and fauna. Forests play an important role in conserving water, maintaining water and soil, preventing wind and fixing sand, regulating climate, purifying air, and eliminating pollution.

1. Maintain soil and water.

The dense canopy has an interception effect on precipitation, and in general, 20 30 percent of the precipitation is intercepted by the canopy. This interception reduces the level of precipitation, thereby reducing soil erosion by rainwater, slowing the process of surface runoff and reducing soil erosion.

2. Conserve water sources.

Due to the role of forest roots, forest soil forms pores with strong water culverting capacity, when the root space of forest soil reaches one meter deep, each hectare of forest can store 500 2000 cubic meters of water, so the forest is called "green reservoir".

3. Wind prevention and sand fixation.

Forest is a major obstacle to wind-blown sand movement and soil erosion, which can reduce wind speed, stabilize quicksand, increase and maintain field humidity, reduce the harm of dry and hot wind, and play a significant role in protecting agriculture in areas damaged by wind-blown sand, so forest is a barrier to agricultural production.

Fourth, regulate the climate.

Due to the transpiration of the forest, it plays an important role in the natural water cycle and the improvement of the climate, the forest absorbs a large amount of water from the ground every day, and then returns to the atmosphere through the evaporation of trees and leaves, so the water vapor content above the forest is more than that over the area without forests, and the water becomes water vapor content to absorb a certain amount of heat, so in the air over a large area of forest, the air is moist, and it is easy to become clouds and cause rain, increasing regional precipitation.

Fifth, forests can eliminate pollution.

Forests play a significant role in purifying the atmosphere, purifying urban sewage, eliminating noise and other environmental protection, forests can absorb C02, produce O2, the content of C02 in the atmosphere is usually 0 03, if it continues to increase, it can affect climate change, and have a significant impact on human health and production and life.

1) It is a state of apex equilibrium formed by succession in humid climates, with the most abundant biological species and their life forms, and the most basic components of the system are trees and other woody plants.

2) The hierarchical structure, lamellar structure and nutrient structure are complex, and the food chain crosses vertically and horizontally to form a complex food web, and the environmental space and nutrients are fully utilized.

3) The highest productivity and the largest biomass (about 90% of the terrestrial biomass).

4) It has a strong natural regulation ability to the natural environment, especially in regulating climate, conserving water sources, purifying air, maintaining water and soil, preventing wind and sand fixation, smoking and dust retention, and changing regional hydrothermal conditions. In addition, it is also of great significance to human production and life.

China's forest resources continue to grow, the quality of the ecosystem is steadily improving, this is actually to ensure the ecological quality of our country, but also to protect our earth, the earth is our life is the home of our life, if the resources disappear, then the earth will not become the place we rely on to survive, at that time we really have nowhere to go. <>

1. The significance of the steady improvement of the quality of the ecosystem

When I was a child, the teacher has been telling us to protect our mother earth, to protect our water resources, to protect every grass and tree on the earth, at that time it was not very clear, what benefits can the protection of these things bring us, only to know when we grow up that there is no this, we have no way to survive, now our country's forest resources are constantly growing, and the quality of the living and touring system is also steadily improving, which means that our living home is better and better protected by us. We are also able to live on this earth for longer and longer periods of time. <>

Second, we must learn to start from ourselves and start from the small things around us

And the greater stability of the ecosystem can also improve our quality of life, and it can also keep the earth from being harmed so much. At the same time, it can also provide us with more beneficial things, so we must protect our country's forest resources, protect our ecosystem, if these things are gone, then we are really affected too much. <>

When I was young, I seemed to be able to memorize these knowledge points, but when I grew up, I neglected some things. He Bury hopes that we can all start from the small things in life, protect the flowers and trees around us, and at the same time learn to save water and paper, so as to better protect our mother earth. In particular, parents must set a good example for their children, how you teach, how children do, and we must also provide a better growth environment for the next generation.

Forest resources continue to grow, improve the living environment of human beings, the air quality has also improved, the air dust content of the city is less than before, a wide variety of plants can create a beautiful environment to maintain ecological balance, with the survival of animals stuffy socks home, is the entire national economic construction and sustainable development of the irreplaceable important role, we should vigorously advocate afforestation, so as to protect the reputation of our living space.

This can make our country's air cleaner, can also protect our ecological environment, and also helps the growth of plants, and this can also promote the economic development of our country, this act of opening up also helps our health.

The ecological environment has become better, the temperature has changed, the air quality has become more relaxed, the air quality has become fresher, the immunity has been improved, and the mood has been pleasant, which is more suitable for human habitation.

China's ecosystem is gradually improving, China's forest volume is constantly raising the town high, which means that China attaches great importance to environmental protection before disturbance, and the royal plum potato means that China's environment will be better and better, and can better protect the earth.

Due to the irrational use and destruction of forest resources for a long time, the forest ecosystem of the source country has shown a trend of decline, and even barren mountains have appeared, and grassland towns have been degraded and desertified due to excessive grazing.