Analysis On The Spatial Difference And Equity Of Carbon Emissions In The Yangtze River Economic Belt Based On 3E Evaluation Model

In response to global climate change,every country over the world has made its own greenhouse gases reduction target.In the Paris Climate Conference held in 2015,the global agreed to hold the increase in the global average temperature to well below 2°C above pre-industrial levels and to pursue efforts to 1.5°C.As the world's largest emitter of carbon and energy consumer,China had taken the quantitative and binding emission reduction tasks.In 2009,China announced that by 2020 the carbon discharge would drop 40%to 45%compared with 2005.In 2014,China committed to achieve the peaking of CO₂ emissions around 2030;In 2015,China proposed the goal that by 2030 the carbon emission would drop60%to 65%compared with 2005.The national goal of carbon reduction will be carried out in all the districts.However,due to the large provincial diversity in economic situation and energy utilization,the distribution of provincial carbon reduction targets is hard to strike a balance between efficiency and equity in implementation.Therefore,it is an important problem that how to accurately measure and evaluate the existing emission unfairness,and how to allocate the binding shares of each region scientifically.To get a scientific and reasonable evaluation of regional carbon emissions,we must take not only the existing and historical greenhouse gas emissions,but also the regional ecological capacity,the total population and economic efficiency and other factors into consideration.Based on this,3E Model?Ecology-Equity-Efficiency?was built to quantitatively calculate the equity of carbon emissions in the Yangtze River Economic Belt in the year 2000-2013.Also,ArcGIS was used to analysis the possible reasons for the spatial differences and fair value.Meanwhile,the final 3E result was compared to the national emission reduction plan in the"12th Five-Year"and"13th Five-Year".Here are the conclusions:1.The 3E fair value basically shows an increase from the east coast to the upper reaches of the law in Yangtze River Economic Belt,which is consistent with the provincial carbon emission distribution trend in"12th Five-Year",while the central provinces of Hubei,Anhui,Jiangxi and Hunan show a significant difference.2.The ecological,social and economic effects of provincial carbon emissions are obviously different.Ecological carrying capacity in Yunnan,Sichuan and Jiangxi are relatively high;Jiangsu,Shanghai and Zhejiang have the higher Per capita carbon emissions and emissions density.The contribution rate of Jiangsu,Zhejiang and Shanghai is greater than that of its carbon emissions.3.In order to achieve the overall goal of reducing emissions,China must take different measures according to local conditions.Obvious gap of share allocation was reflected in the caparison of 3E result and national reduction target in"12th Five-Year".It is unfair to the central region which has different index of 3E,however,the situation was changed in"13th Five-Year".4.Distribution of national reduction targets should weaken or break through the provincial administrative boundaries.The issue should be considered and solved in the whole economic belt,through unified reduction targets and comprehensive assessment mechanism to improve and enrich the regional top-level design of carbon emission reduction.