Vegetation refers to the flora system of a specific region. Importance A plant community or vegetation's a characteristic group of plants that grow naturally together in a particular environment.Vegetation supports critical functions in the biosphere, at all possible spatial scales. First, vegetation regulates the flow of numerous biogeochemical cycles (see biogeochemistry), most critically those of water, carbon, and nitrogen; it's also of great importance in local and global energy balances. S… (More on Vegetation)