中国煤炭铁路运输生命周期温室气体排放研究
张优, 程明今, 刘雪薇

Life cycle greenhouse gas emissions from China’s coal railway transport
ZHANG You, CHENG Mingjin, LIU Xuewei
图4 1999—2017年煤炭铁路运输LC-GHGEs的时空分异
Figure 4 Spatiotemporal variations of total life cycle greenhouse gas emissions (LC-GHGEs) from coal railway transportation, 1999-2017