中国唐山运输模式“公转铁”的环境影响

To reduce air pollution from heavy-duty vehicles, the port of Tangshan, one of the key ports located near the capital of Beijing, will shift transport of all iron ore imports from truck to rail. We estimate this will eliminate 30,000 truck trips daily and with the current train fleet, about 70% electric and 30% diesel, reduce diesel use approximately 85% annually. But the net impacts of this strategy on climate and air quality depend on the emissions associated with the rail system.