Spatial and temporal variation of historical anthropogenic NMVOCs emission inventories in China Y. Bo, H. Cai, and S. D. Xie College of Environmental Sciences and Engineering, State Key Joint Laboratory of Environmental Simulation and Pollution Control, Peking University, Beijing, China
Abstract. Multiyear emission inventories of anthropogenic NMVOCs in
China for 1980–2005 were established based on time-varying statistical data,
literature surveyed and model calculated emission factors, which were
further gridded at a high spatial resolution of 40 km×40 km using
the GIS methodology. Results show a continuous growth trend of China's
historical NMVOCs emissions during the period of 1980–2005, with the
emission increasing by 4.2 times at an annual average rate of 10.6% from
3.91 Tg in 1980 to 16.49 Tg in 2005. Vehicles, biomass burning, industrial
processes, fossil fuel combustion, solvent utilization, and storage and
transport generated 5.50 Tg, 3.84 Tg, 2.76 Tg, 1.98 Tg, 1.87 Tg, and 0.55 Tg
of NMVOCs, respectively, in 2005. Motorcycles, biofuel burning, heavy duty
vans, synthetic fibre production, biomass open burning, and industrial and
commercial consumption were primary emission sources. Besides, source
contributions of NMVOCs emissions showed remarkable annual variation.
However, emissions of these sources had been continuously increasing, which
coincided well with China's economic growth. Spatial distribution of NMVOCs
emissions illustrates that high emissions mainly concentrates in developed
regions of northern, eastern and southern coastal areas, which produced more
emissions than the relatively underdeveloped western and inland regions.
Particularly, southeastern, northern, and central China covering 35.2% of
China's territory, generated 59.4% of the total emissions, while the
populous capital cities covering merely 4.5% of China's territory,
accounted for 24.9% of the national emissions. Annual variation of
regional emission intensity shows that emissions concentrating in urban
areas tended to transfer to rural areas year by year. Moreover, eastern,
southern, central, and northeastern China were typical areas of high
emission intensity and had a tendency of expanding to the northwestern
China, which revealed the transfer of emission-intensive plants to these
areas, together with the increase of biomass open burning.
Citation: Bo, Y., Cai, H., and Xie, S. D.: Spatial and temporal variation of historical anthropogenic NMVOCs emission inventories in China, Atmos. Chem. Phys., 8, 7297-7316, doi:10.5194/acp-8-7297-2008, 2008.