[DISCONTINUED] Emissions of particulate matter from transport

The product has been discontinued since: 08 Feb 2018. This indicator tracks trends in atmospheric emissions of particulate matter caused by transport. PM2.5 refers to particulate matter with a diameter of up to 2.5 micrometres. Particulate matter potential for causing health problems is directly linked to the size of the particles.本产品自2018年2月8日起已停产。 本指标追踪交通运输引发的大气颗粒物排放趋势。PM2.5是指直径不超过2.5微米的颗粒物。颗粒物引发健康问题的潜在风险，与其粒径大小直接相关。