The strength of these two functions determines the rise and fall of the ecosystem and its stability. The dynamic process of ecosystem usually includes complex physical, chemical and biological actions. Among them, biology plays the role of transmitter, catalyst and even builder.
In the process of long-term evolution and adaptation, organisms not only established interdependent and mutually restrictive food chain links, but also formed a clear division of labor due to the evolution of living habits, and used nature to provide various resources in stages. It is precisely for this reason that so many biological species can be raised in a limited space, and a relatively stable state and continuous utilization of materials can be maintained.
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In the construction and development of ecological engineering, it is necessary to implement the intensive management mode of labor, capital, energy and technology to achieve high output and promote the complementary, mutually beneficial and coordinated development of all components in the system. The goal of ecological engineering construction is to make the artificially controlled ecosystem have strong natural reproduction and social reproduction capabilities.
In terms of ecological benefits, it is necessary to realize ecological regeneration, so that the speed of resource renewal in the process of natural reproduction is greater than or equal to the speed of utilization. In terms of economic benefits, it is necessary to realize economic regeneration, so that the total production income in the process of social and economic reproduction is greater than or equal to the total expenditure of assets, and continuously enhance the economic strength of system expansion and reproduction.