Research on Energy-Related CO2 Emissions Characteristics, Decoupling Relationship and LMDI Factor Decomposition in Qinghai

Based on the statistical data from 1997 to 2017, with utilization of IPCC carbon accounting method, Tapio decoupling model, and Logarithmic Mean Divisia Index (LMDI), temporal evolution characteristics Qinghai’s energy-related emissions, relationship, its driving factors were analyzed. The results indicated that 1) emissions Qinghai showed a trend first slowly increasing, then rapidly finally fluctuating decreasing. It increased 3.85 million tons in 14.33 an average annual growth rate 6.79%. emission intensity revealed steady downward trend, 189.82 tons/million CNY 54.6 –6.04%. 2) relationship between economic was represented by four types: weak decoupling, strong expansion negative coupling. Among them, achieved only five periods 1997–1998, 1999–2000, 2001–2002, 2013–2015, 2016–2017. 3) structural effect energy consumption paramount factor restraining followed effect, while growth, population size important facilitating increase emissions. To this end, should continuously optimize structure improve efficiency, thus achieving green high-quality development.