Dr. Barry proposes a new planetary boundary threshold: “…that - TopicsExpress

Dr. Barry proposes a new planetary boundary threshold: “…that across scales 60 percent of terrestrial ecosystems must remain, setting the boundary at 66 percent as a precaution, to maintain key biogeochemical processes that sustain the biosphere and for ecosystems to remain the context for human endeavors. Strict protection is proposed for 44 percent of global land, 22 percent as agro-ecological buffers, and 33 percent as zones of sustainable human use.”

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