高等院校包括大学、学院和科研院所作为重要社会单元,能源资源消耗水平远高于社会平均水平,研究高校碳排放核算及碳中和路径,助力校园率先实现碳中和,可以为国家“双碳”目标的实现提供科技支撑。基于国外高等院校碳排放与碳中和相关研...高等院校包括大学、学院和科研院所作为重要社会单元,能源资源消耗水平远高于社会平均水平,研究高校碳排放核算及碳中和路径,助力校园率先实现碳中和,可以为国家“双碳”目标的实现提供科技支撑。基于国外高等院校碳排放与碳中和相关研究,指出高等院校碳排放主要包括3个范围。根据温室气体核算体系(Greenhouse Gas Protocol)提出的3个范围碳排放的核算方法和标准,通过梳理国内外高校及相关行业碳排放研究现状,归纳总结碳排放核算方案,并针对性地探讨提出相应的碳中和路径框架。高校碳排放核算和碳中和方案框架的建立不仅能够为国内高校实现碳中和提供路径借鉴,而且可以为各地区、各行业降低碳排放、实现碳中和提供理论依据和方法参考,对于推动高校在碳中和科技创新中所承担的特殊使命具有重要的指导意义。展开更多
A special kind of rice field exists in China that is flooded year-round. These rice fields have substantially large CH4emissions during the rice-growing season and emit CH4 continuously in the non-rice growing season....A special kind of rice field exists in China that is flooded year-round. These rice fields have substantially large CH4emissions during the rice-growing season and emit CH4 continuously in the non-rice growing season. CH4 emission factors were used to estimate the CH4 emissions from year-round flooded rice fields during the rice-growing season in China.The CH4 emissions for the year-round flooded rice fields in China for the rice growing season over a total area of 2.66Mha were estimated to be 2.44 Tg CH4 year-1. The uncertainties of these estimations are discussed as well. However,the emissions during the non-rice growing season could not be estimated because of limited available data. Nevertheless,methane emissions from rice fields that were flooded year-round could be several times higher than those from the rice fields drained in the non-rice-growing season. Thus, the classification of 'continuously flooded rice fields' in the IPCC(International Panel on Climate Change) Guidelines for National Greenhouse Gas Inventories is suggested to be revised and divided into 'continuously flooded rice fields during the rice growing season' and 'year-round flooded rice fields'.展开更多
文摘高等院校包括大学、学院和科研院所作为重要社会单元,能源资源消耗水平远高于社会平均水平,研究高校碳排放核算及碳中和路径,助力校园率先实现碳中和,可以为国家“双碳”目标的实现提供科技支撑。基于国外高等院校碳排放与碳中和相关研究,指出高等院校碳排放主要包括3个范围。根据温室气体核算体系(Greenhouse Gas Protocol)提出的3个范围碳排放的核算方法和标准,通过梳理国内外高校及相关行业碳排放研究现状,归纳总结碳排放核算方案,并针对性地探讨提出相应的碳中和路径框架。高校碳排放核算和碳中和方案框架的建立不仅能够为国内高校实现碳中和提供路径借鉴,而且可以为各地区、各行业降低碳排放、实现碳中和提供理论依据和方法参考,对于推动高校在碳中和科技创新中所承担的特殊使命具有重要的指导意义。
文摘A special kind of rice field exists in China that is flooded year-round. These rice fields have substantially large CH4emissions during the rice-growing season and emit CH4 continuously in the non-rice growing season. CH4 emission factors were used to estimate the CH4 emissions from year-round flooded rice fields during the rice-growing season in China.The CH4 emissions for the year-round flooded rice fields in China for the rice growing season over a total area of 2.66Mha were estimated to be 2.44 Tg CH4 year-1. The uncertainties of these estimations are discussed as well. However,the emissions during the non-rice growing season could not be estimated because of limited available data. Nevertheless,methane emissions from rice fields that were flooded year-round could be several times higher than those from the rice fields drained in the non-rice-growing season. Thus, the classification of 'continuously flooded rice fields' in the IPCC(International Panel on Climate Change) Guidelines for National Greenhouse Gas Inventories is suggested to be revised and divided into 'continuously flooded rice fields during the rice growing season' and 'year-round flooded rice fields'.
