| 英文摘要: | The Working Group II contribution to the IPCC’s Fifth Assessment Report considers the vulnerability and exposure of human and natural systems, the observed impacts and future risks of climate change, and the potential for and limits to adaptation. The two-volume report 1) assesses risks and opportunities for societies, economies, and ecosystems around the world, and 2) considers unique features of major world regions. Here, the contents of the report are summarized for policymakers. |