Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, China.
Research Center for Strategy of Global Mineral Resources, Chinese Academy of Geological Sciences, Beijing, China.
Integr Environ Assess Manag. 2022 Jan;18(1):258-273. doi: 10.1002/ieam.4464. Epub 2021 Jul 7.
As a major carbon emitter, the electricity sector is crucial to the realization of China's emission reduction objectives. Existing studies focus mostly on the influencing factors, emission efficiency and low carbon development of carbon emissions in the electricity sector. Missing from the literature is an analysis of spatial characteristics of carbon emissions and the embodied carbon emission transfer caused by the separation of electricity production and consumption, which is the basis for assigning the responsibility for emission reduction. Thirty provinces in China were taken as research objects, and Moran's I index was adopted to analyze the spatial characteristics of the electricity sector's carbon emissions and carbon emission intensity. Based on multiregional input-output tables, we compared the transfer situation of China's provincial electricity carbon emissions in 2010 and 2015. The results demonstrate that, from 2010 to 2015, the electricity carbon emissions in 20 provinces increased, whereas the carbon emission intensity in 21 provinces decreased. Carbon emissions and carbon emission intensity of electricity in most provinces demonstrate positive spatial clustering characteristics. The total amount of carbon emission transfer in the electricity sector increased from 421.22 million tons in 2010 to 581.369 million tons in 2015, the number of net transfers out of areas increased from 13 to 15, and the number of net transfers into areas decreased from 16 to 15. The active degree of carbon emission transfer reveals the eastern region > the central region > the western region. Different emission reduction policies should be formulated based on the difference in resource endowment between the north and south. Provinces that transferred out large amounts of electricity carbon emissions should take greater responsibility for emission reduction. Integr Environ Assess Manag 2022;18:258-273. © 2021 SETAC.
作为主要的碳排放者，电力行业对于实现中国的减排目标至关重要。现有研究主要集中在电力行业碳排放的影响因素、排放效率和低碳发展方面，而对于电力生产和消费分离所导致的碳排放的空间特征和隐含碳排放转移分析则有所缺失，而这是分配减排责任的基础。本文以中国 30 个省份为研究对象，采用 Moran's I 指数分析了电力行业碳排放和碳排放强度的空间特征。基于多区域投入产出表，比较了中国省级电力碳排放在 2010 年和 2015 年的转移情况。结果表明，从 2010 年到 2015 年，20 个省份的电力碳排放增加，而 21 个省份的碳排放强度下降。大部分省份的电力碳排放和碳排放强度均表现出正空间集聚特征。电力行业碳排放量转移总量从 2010 年的 4.2122 亿吨增加到 2015 年的 5.81369 亿吨，转出地区的数量从 13 个增加到 15 个，转入地区的数量从 16 个减少到 15 个。碳排放转移的活跃程度显示出东部地区>中部地区>西部地区。应根据南北资源禀赋的差异制定不同的减排政策。转出大量电力碳排放的省份应承担更大的减排责任。
