The results show the contribution of transport activities in total emissions of each product/service sector and compare these numbers among all the sectors. Additionally, the study evidences that among transportation service sectors, the road traffic occupies the highest rate in term of energy consumptions and air emissions as well. | Vietnam Journal of Science and Technology 56 (2C) (2018) 30-35 ENERGY CONSUMPTION AND AIR EMISSION INVENTORY FOR TRANSPORTATION SECTORS OF VIET NAM Pham Thi Hue*, Nguyen Thi Anh Tuyet School of Environmental Science and Technology, Hanoi University of Science and Technology, 1 Dai Co Viet, Ha Noi * Email: huept@ Received: 10 May 2018; Accepted for publication: 20 August 2018 ABSTRACT Aiming to clarify the environmental impact caused by transportation activities in sectors of Vietnam, this study uses the Input-Output (IO) model to assess energy consumptions and air emissions from railway, road traffic, waterway, transport service as well as aviation vehicles in 2016. The data is based on the 2012 IO table updated for 2016. All sectors of the original IO table are aggregated into 38 sectors where the transport service sectors are kept intact for the deeper analysis. The energy consumptions of transport activities are determined based on the net contribution rate of fuels to each product/service sector and the calorific value of each fuel type. Then multiplying with the corresponding emission factors of CO2, NOx and SO2, the respective emissions from above sectors are calculated. The results show the contribution of transport activities in total emissions of each product/service sector and compare these numbers among all the sectors. Additionally, the study evidences that among transportation service sectors, the road traffic occupies the highest rate in term of energy consumptions and air emissions as well. Keywords: IO table, energy consumption, transportation, CO2, NOx and SO2 emissions. 1. INTRODUCTION IO tables have been applied to estimate the energy consumption and air emissions of product and service sectors in a couple of countries included USA, ECs, Japan, Singapore and India [1, 2, 3]. In Viet Nam, since IO tables were firstly published in 2000, the number of IO table-based researches is very limited. In fields of energy and environment, energy
