2022 Environmental Performance Index (EPI)

The 2022 Environmental Performance Index (EPI) ranks 180 countries on 40 performance indicators in the following 11 issue categories: air quality, sanitation and drinking water, heavy metals, waste management, biodiversity and habitat, ecosystem services, fisheries, acid rain, agriculture, water resources, and climate change mitigation. These categories track performance and progress on three broad policy objectives, environmental health, ecosystem vitality, and climate change. The EPI's proximity-to-target methodology facilitates cross-country comparisons among economic and regional peer groups. The data set includes the 2022 EPI, component scores, and time-series source data. It is the result of a collaboration of the Yale Center for Environmental Law and Policy (YCELP), Yale University, and the Columbia University Center for International Earth Science Information Network (CIESIN).

2022年环境绩效指数（EPI）对180个国家在以下11个问题类别中的40项绩效指标进行了排名：空气质量、卫生与饮用水、重金属、废物管理、生物多样性及栖息地、生态系统服务、渔业、酸雨、农业、水资源和气候变化缓解。这些类别追踪了三个广泛政策目标——环境健康、生态系统活力和气候变化——的绩效与进展。EPI的近目标方法促进了经济和区域同侪群体间的跨国比较。该数据集包含了2022年EPI、组成部分得分和时序源数据。这是耶鲁环境法律与政策中心（YCELP）、耶鲁大学和哥伦比亚大学国际地球科学信息网络中心（CIESIN）合作的成果。