2018 Environmental Performance Index
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The 2018 Environmental Performance Index (EPI) ranks 180 countries on 24 performance indicators in the following 10 issue categories: air quality, water and sanitation, heavy metals, water resources, agriculture, fisheries, forests, biodiversity and habitat, climate and energy, and air pollution. These categories track performance and progress on two broad policy objectives, environmental health and ecosystem vitality. The EPI's proximity-to-target methodology facilitates cross-country comparisons among economic and regional peer groups. The data set includes the 2018 EPI and component scores, backcast EPI scores for 1950-2017, and time-series source data. The 2018 EPI was formally released in Davos, Switzerland, at the annual meeting of the World Economic Forum in January 2018. It is the result of collaboration between the Yale Center for Environmental Law and Policy (YCELP), Yale University, Columbia University Center for International Earth Science Information Network (CIESIN), and the World Economic Forum (WEF). The Interactive Website for the 2018 EPI is at https://epi.envirocenter.yale.edu/.
2018年环境绩效指数（Environmental Performance Index, EPI）基于以下10大议题类别下的24项绩效指标，对180个国家进行排名：空气质量、水与卫生、重金属、水资源、农业、渔业、森林、生物多样性与栖息地、气候与能源以及空气污染。这些议题类别围绕两大核心政策目标——环境健康与生态系统活力——追踪相关绩效与进展情况。EPI采用的“贴近目标”评估方法，可便捷开展经济与区域同侪群体间的跨国比较。本数据集涵盖2018年EPI及其分项得分、1950至2017年的回溯EPI得分，以及时序源数据。2018年EPI于2018年1月在瑞士达沃斯举办的世界经济论坛（World Economic Forum, WEF）年会上正式发布。该指数由耶鲁大学耶鲁环境法与政策中心（Yale Center for Environmental Law and Policy, YCELP）、哥伦比亚大学国际地球科学信息网络中心（Center for International Earth Science Information Network, CIESIN），以及世界经济论坛联合研发完成。2018年EPI的互动官网为https://epi.envirocenter.yale.edu/。
