(2) Forest ecosystem and urban ecosystem
(3) Urban ecosystem
(4) Energy and ecosystem are interrelated. (reasonable)
(5) Forest ecosystem
This topic studies the types of ecosystems and the relationships between different ecosystems. The answer to this question should be based on the characteristics and functions of each ecosystem.
(1) China is vast in territory and abundant in natural resources, with vast ocean and changeable climate, forming various types of ecosystems. Ecosystem usually refers to natural ecosystem, which mainly includes:
The ecosystems mentioned in the title information include: urban ecosystem, forest ecosystem, marine ecosystem, fresh water ecosystem, etc.
(2) Forest ecosystems are mainly distributed in humid and semi-humid areas, with a wide variety of animals and plants, which is the region with the richest biodiversity in the global environment. Forests play an important role in water conservation and soil and water conservation, and are known as green reservoirs. There are few species and quantities of animals and plants in the urban ecosystem, and consumers are mainly human beings, who play a leading role.
(3) The composition of ecosystem includes biological part and abiotic part. The biological part includes producers, consumers and decomposers. Abiotic parts include sunlight, air, water, temperature, etc. Water pollution in an ecosystem will inevitably affect the creatures in this ecosystem, and then affect the stability of this ecosystem. Different ecosystems in the biosphere are not isolated from each other, but interrelated, so they will inevitably have a certain impact on other ecosystems.