Is a city an ecosystem?

Ecosystem is a concept in ecology. Ecology is a science that studies the interrelationship between living organisms and their living environment, and is the main branch of biology.

The sum of all individuals of a species within a certain spatial range is called population in ecology, and the sum of all organisms of different species is a community, and the biological community together with the physical environment in which it is located constitutes an ecosystem. An ecosystem is a combination of living and environmental systems in a specific space, characterized by the flow of energy and the circulation of matter within the system and between the system and the outside of the system. For example, forests, grasslands, rivers, lakes, mountains, or parts thereof are ecosystems; Farmland, reservoirs, and cities are artificial ecosystems.

Ecosystems have a hierarchical structure, i.e., smaller ecosystems make up larger ecosystems, simple ecosystems make up complex ecosystems, and the largest ecosystem is the biosphere.

Be. An ecosystem refers to the unity of organisms and the environment within a certain area.

Environments such as air, sunlight ......Organisms are mainly humans, but of course there are relatively simple species of animals and plants.

Calculate. In the seventh grade, there are biology books.

Be. There are 5 types: forest, grassland, ocean, rural, and urban.

citiesEcosystemThe characteristics do not include strong self-sustaining ability, and the ruler includes a high degree of artificiality, human subjectivity, incomplete functioning, and so on. As follows:

1. The urban ecosystem is an ecosystem dominated by people.

2. The urban ecosystem is an ecosystem with large capacity, large flow, high density, fast operation and high openness.

3. The urban ecosystem is a system of self-domestication by human beings.

4. Urban ecosystems are multi-layered and complex systems.

An urban ecosystem is an ecosystem dominated by people.

Human beings are the producers in the urban ecosystem, and all the facilities in the city are created by them. Human beings use their own sweat and wisdom to transform nature into a human desire. Human life activities are the flow of energy, logistics and information in the ecosystem.

Human beings also have their own process of reproduction.

Humans, in turn, are the main consumers in urban ecosystems. Animals are few and far between, and are mainly pests or domesticated animals, reflecting human influence. The amount of biomass in humans is much greater than not only the animals in the system, but also the plants in the system.

Compared to greens and other animals, humans are at the top of the inverted pyramid of trophic levels.

Human beings are the masters of the urban ecosystem, and the leading role is not only to participate in the above processes of the ecosystem, but more importantly, human beings control and manage the urban ecosystem for their own interests, and human economic activities.

It plays an important role in the development of urban ecosystems.

citiesEcosystemThe characteristics do not include strong self-sustaining ability.

The characteristics of the urban ecosystem are as follows:

1. The urban ecosystem is an ecosystem dominated by people.

2. The urban ecosystem is an ecosystem with large capacity, large flow, high density, fast operation and high openness.

3. The urban ecosystem is a system of self-domestication by human beings.

Protection of the ecological environment of the city of Hewang.

Urbanization is an inevitable trend in the development of human society. In the process of urbanization, humans have confined most wildlife to an increasingly narrow range, while also confined themselves to an artificial environment made of reinforced concrete and various pollutions, far from their ancestors.

The wild and interesting living environment has produced all kinds of civilization diseases.

Therefore, improving and protecting the urban ecological environment is an important topic that human beings should attach great importance to in the process of urban construction and development. Urban environmental protection must follow the law of ecosystem stability and economic development, and solve major urban environmental problems such as population, energy, water resources, pollution control and land use from the perspective of overall and long-term interests.

Ensure the healthy and coordinated development of the city.

The role of the urban ecosystem is to organize social production, facilitate the life of residents, and provide guarantee for economic and social development, which is embodied in four aspects: production function, life function, restoration function and regulation function. These functions are the flow of matter, energy, and information through the system and beyond.

population flow and money flow, etc.

The purpose of studying the function of urban ecosystem is to reveal the main factors affecting the stability of the system, put forward the key to regulating the system, provide a scientific basis for system decision-making, and promote the development of the system in a more orderly and advanced direction.

An urban ecosystem is an integrated system consisting of the natural environment.

Socio-economic, cultural, scientific and technological composition. It includes the construction of houses and other facilities that are the basis of urban development, as well as the inhabitants and their activities as the main body of the city. Cities are more of an artificial system.

The city is an open system. It requires access to air, water, food, fuel, and other substances from the outside world. Urban ecosystems are the inhabitants of cities.

It is also a special artificial ecosystem built by human adaptation, processing and transformation of the natural environment.

The urban ecosystem is mainly composed of the natural environment, socio-economic and cultural, scientific and technological aspects.

The urban ecosystem is a unified whole formed by the interaction between urban residents and their environment, and it is also a special artificial ecosystem built by human beings to adapt, process and transform the natural environment.

The urban ecosystem is an integrated system that includes the buildings and other facilities that are the basis of urban development, as well as the inhabitants and their activities that are the main body of the city.

Urban ecosystems have not only biological components (plants, animals and bacteria, fungi, viruses) and abiotic components (light, heat, water, atmosphere, etc.), but also human and socio-economic elements, which form an intrinsically linked and unified whole through energy flows, biogeochemical cycles, and material and waste treatment systems.

The above is an introduction to the urban ecosystem and its main components, and I hope that it will be helpful to you.

At the heart of the urban ecosystem are people. The urban ecosystem is a unified whole formed by the interaction between urban residents and their environment, and is a special artificial ecosystem built by human beings to adapt and transform the natural environment.

The composition of the urban ecosystem. Unlike natural ecosystems, it focuses on the interrelationship between urban people and the urban environment. It is a complex system composed of natural, economic, and social systems.

The natural system in the city includes the basic materials on which urban residents live, such as sunlight, air, fresh water, land, animals, plants, microorganisms, etc.

The economic system includes all aspects of production, distribution, circulation and consumption, and the social system involves all aspects of the social, economic and cultural activities of urban residents, which are mainly manifested in various relationships between people, between individuals and collectives, and between collectives. These three systems are interconnected through highly dense flows of matter, energy, and information, in which human management and decision-making play a decisive regulatory role.

Compared with natural ecosystems, urban ecosystems have the following characteristics.

1.Urban ecosystems are based on.

Human-centered ecosystems. All facilities in the city are made by people, and it is an artificial ecosystem with people as the main body. Human activities play an important role in the development of urban ecosystems.

The amount of producer green plants in urban ecosystems is small compared to natural ecosystems; Consumers are predominantly humans, not wild animals; The activity of the decomposer's microorganisms is inhibited, and the decomposition function is incomplete.

2.An urban ecosystem is an ecosystem with a large flow of material and energy, fast operation and a high degree of openness. Cities are densely populated, and most of the food needed by urban dwellers is artificially imported from other ecosystems; Industry, construction, transportation, etc. in the city all require a large amount of material and energy, which must also be imported from the outside world and quickly converted into various products.

The production and life of urban residents produce a large amount of waste, in which harmful gases will inevitably drift to the space outside the city, and most of the sewage and solid waste can not be naturally purified and decomposed by the purification capacity of the natural system in the city, and if it is not artificially treated in time, it will cause environmental pollution. It can be seen that the urban ecosystem is a highly open ecosystem, both in terms of energy and material. This high degree of openness in turn leads to a high degree of dependence on other ecosystems, which can be strongly disturbed by other ecosystems due to the large amount of waste generated that can only be exported.

3.The self-regulation ability of natural systems in urban ecosystems is weak, and environmental pollution and other problems are prone to occur. The nutrient structure of urban ecosystems is simple, and the ability to automatically purify environmental pollution is far inferior to that of natural ecosystems.

Urban environmental pollution includes air pollution, water pollution, solid waste pollution and noise pollution. The following is an example of sulfur dioxide pollution in the atmosphere.

4.The simplification of the food chain and the inversion of nutrient relationships in urban ecosystems determine that the ecosystem is an unstable system.