Ecosystems exposed to more than one pressure, such as a forest that is first felled and then used for agriculture, took the longest to recover.

 
  • 那些遭遇不只一種壓力的生態(tài)系統,例如一片先是被砍伐再被用作農耕的林地,需要最長(cháng)的時(shí)間來(lái)復原。
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