What is the natural arche of ecological civilization? It is balanced cycling of a series of ecosystems, such as forest ecosystem, grassland ecosystem, agriculture ecosystem, lake and river ecosystems and marine ecosystems, etc. The standard of balance means fresh and clean water and air, high quality products of agriculture, animal husbandry and fisheries, pleased leisure landscape, natural habitats for native and endangered species, and maintenance of ecological balance and strong resilience to external disturbances.