First introduce the reuse of the mixed water, and then white water closed system and several typical zero discharge processes in pulp and paper plants are presented.

This paper reviews the structure, source, biological function of cecropins and their application in plants and animals, and discuses their existing problems and perspectives.

In the early years it led to a paper presenting evidence that yes, under the same conditions, plots with more species of plants eventually tend to yield more biomass than plots with fewer species.