Planetary boundaries concept is valuable

摘要

As researchers studying the concept of setting environmental boundaries for planetary well-being (J. Rockstroem et al. Ecol. Soc. 14,32; 2009), we disagree with Simon Lewis's suggestion that there are flaws in these proposals (Nature 485, 417; 2012).rnLewis contends that the concept's focus is too narrow, that it doesn't distinguish between 'boundaries' and 'thresholds' and that it should clarify the influence of scale on different problems. These are misunderstandings.