Definition of redundancy and the ecological mechanism of its occurrence

Redundancy is defined as any kind of the active living organic body (including organization, organs, individuals, and even species), due to its existence, result in output reduction of individuals, population, community and even ecosystem for human's benefits. Or simply say that redundancy is the overgrowth of individual organs, plant population that expose negative effects to aim production of individual organs, population and community performance etc. To reduce the living body to a suitable level, the performance of organs, individuals, population, community and ecosystem, to human's benefit, will be increased, we call the living body redundancy. The process of redundancy occurring is the process of functional extension and its existence is helpful to maintain the stability of individuals, population and even community. According to level of redundancy that exists in life system, redundancy can be divided into individuals, population and community. Compensation or overcompensation could be realized through the reduction of the redundancy, which occurs on different levels of life system, i.e. the production of aim organs or performance of aim species population could be improved through reduction of redundancy, and the increase of the production is based on the reduction of stability of life system to variable environments.