What does conservation is management mean?

Conservation is management:- View the video to hear the foreward to the World Conservation Strategy. Conservation is the management of human use of the biosphere so that it may yield the greatest sustainable benefit to present generations while maintaining its potential to meet the needs and aspirations of future generations. Thus conservation is positive, embracing preservation, maintenance, sustainable utilisation, restoration and enhancement of the natural environment.

Keep clean the land or any place we go, make the diference, not only the neatness thing but for exemple to the others.

What is the meant by conservation is managment.