integral natural reserve(Areas allocated to preserve and protect certain animals and plants, or both. They differ from national parks, which are largely a place for public recreation, because they are provided exclusively to protect species for their own sake. Endangered species are increasingly being kept in nature reserves to prevent them from extinction. Nature reserves also serve as a place for more plentiful species to rest, breed or winter)
integrated environmental protection technology(Technologies that meet environmental objectives by incorporating pollution prevention concepts in their design. Integrated environmental control strategies introduced in the early design stages of a process, rather than an end-of-pipe control option introduced in the later stages, improve the technical and economic performance of a process)
integrated management(Unified, combined and coordinated management of environmental problems which correlates relevant organisations, groups, individuals and disciplines by bringing the parts together for a complete approach)