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Biotic factors Abiotic factors.
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Forest ecosystem is an ecosystem composed of biological communities and abiotic environments with trees as the main body.
The forest ecosystem is a unified system in which forest organisms interact with the environment and forest organisms, and produce energy conversion and material circulation. It can be divided into natural forest ecosystem and plantation ecosystem. Compared to terrestrial ecosystems, it has the following characteristics:
Biological production capacity is also high because of the abundance of biological species, the more hierarchical structure, the more complex food chain, and the higher photosynthetic productivity. In terrestrial ecosystems, it has the functions of regulating climate, conserving water sources, maintaining water and soil, and preventing wind and sand fixation.
Forest ecosystem is an ecosystem composed of a biome with trees as the main body and its abiotic environment (light, heat, water, air, soil, etc.). It is a natural ecological science that exchanges matter and energy between organisms and the environment, and between organisms and organisms.
The contents of the forest ecosystem are as follows:
Forest ecosystems are distributed in humid or humid areas, and their main characteristics are a wide variety of animals, complex community structure, population density and the structure of the Mingxu community can be in a stable state for a long time.
The plants in the forest are mainly trees, but there are also a few shrubs and herbaceous plants. There is also a wide variety of animals in the forest. Forest animals are particularly diverse in arboreal and climbing habitats because they are easy to find abundant food and habitat in trees, such as hornbills, lucids, tree frogs, squirrels, martens, bee monkeys, tarsiers and gibbons.
Forests can not only provide a large amount of timber and by-products for human beings, but also play an important role in maintaining the stability of the biosphere and improving the ecological environment. For example, through photosynthesis, forest plants consume a large amount of carbon dioxide and release a large amount of oxygen every day, which is important for maintaining the balance of carbon dioxide and oxygen content in the atmosphere.
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Explanation of forest ecosystems.
It is a synthesis composed of soil, water, air, sunlight, microorganisms, plants, animals, etc. in the forest. It is divided into tropical rainforests, evergreen broad-leaved forests and cold temperate coniferous forests. It is the ecosystem with the highest biomass on land and has a decisive impact on the terrestrial ecological environment.
Word Breakdown Explanation of Forest Trees Growing in Large AreasDetailed explanations usually refer to large areas of growing trees. Forestry refers to the many trees that grow on a fairly large land, and the whole of the animals and other plants that live on this land. Tang Cai Xilian "The same brother inscribes the prince of Weinan and the other industry" poem:
Explanation of the system of the same kind of things according to a certain relationship of the same kind of financial and trade system Methodical or systematic system study Detailed explanation. Lineage. Song Fan Chengda, "East Palace Shou Poem":
The two Hai Kaiji are far away, and the three-ding system is long. Self-note: "Gong Wei Yizu and Emperor Taizong are all in Hai, and now Taishang and the Lord."
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Forest ecosystems, mainly distributed in humid and semi-humid areas, with a wide variety of plants and animals, are the most biodiverse areas in the earth's environment Forests play an important role in conserving water sources and maintaining water and soil. It avoids soil erosion caused by large floods washing the earth's surface, and is known as the "green reservoir" and "lungs of the earth".
So the answer is: conserve water; Prevent soil erosion
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The forest ecosystem is known as the green reservoir, the lungs of the earth. Its functions include: maintaining water and soil, conserving water sources, preventing wind and fixing sand, regulating climate, and purifying the air.
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Among terrestrial ecosystems, forest ecosystems have the most abundant relative biodiversity, and tropical rainforest ecosystems in forests have the highest biodiversity among terrestrial ecosystems.
Among aquatic ecosystems, wetland ecosystems (e.g., mangroves) and coral reef ecosystems have relatively high biodiversity.
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Yes, there are many biological species in the forest.
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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.
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That stabilizing effect is to maintain the ecological balance.
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What are the components of a "forest ecosystem"?
The components of the ecosystem should include: abiotic parts: sunlight, air, moisture, temperature, soil, etc. Biological parts: producers (e.g. green plants) consumers (various animals) decomposers (bacteria, fungi, etc.) It is the same regardless of the system.
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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.
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