我国城市大气化石源CO_2的~(14)C示踪研究进展
Progress of Tracing Fossil Fuel CO_2 by Radiocarbon in Chinese Cities
查看参考文献42篇
周卫健
1,2,3
吴书刚
1,2
熊晓虎
1,2
程鹏
1,2
王鹏
1,2
侯瑶瑶
1,2
牛振川
1,2
杜花
1,2
陈宁
1,2
卢雪峰
1,2
付云翀
1,2
刘林
4
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文摘
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化石燃料等排放是大气CO_2浓度增加的主要原因,而城市是碳排放研究的热点区域。获取化石源CO_2 (CO_(2ff))的时空变化特征,可以为政府的宏观决策及参与国际碳减排谈判提供重要的科学数据。近十年来我国科技人员在运用~(14)C示踪城市大气CO_(2ff)的研究方面取得了一些重要进展:通过大气、树轮和一年生植物样品~(14)C的分析,获得了不同时间尺度和空间尺度CO_(2ff)的变化特征,发现北方城市是减排的重点。CO_(2ff)与PM_(2.5)关系的研究表明,控制大气污染物可以同时降低CO_(2ff)排放,存在减排的协同效应。WRF-CHEM模式模拟分析了关中地区CO_(2ff)的传输,并结合Δ~(14)CO_2和 δ~(13)C对CO_(2ff)的来源进行解析,发现西安CO_(2ff)主要来源于本地燃煤的排放。~(14)C示踪获得的CO_(2ff)浓度与统计的碳排放量变化趋势和幅度基本一致,可以相互校验,保证数据的可靠性。为此建议尽快建立我国城市大气Δ~(14)CO_2观测网,投入更多的人力物力推进这项研究,服务于国家碳减排任务。 |
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其他语种文摘
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The main cause of increase in atmospheric CO_2 concentration is the carbon emissions from fossil fuel combustions and so on.Cities are regarded as the hot spots of carbon emissions.On the basis of obtaining the levels and spatial-temporal variation characteristics of atmospheric fossil fuel CO_2(CO_(2ff)),we can provide scientific data for government policy-making and international negotiations on carbon reductions.In the recent ten years,some important progresses have been achieved in the study of tracing urban atmospheric CO_(2ff) using ~(14)C by Chinese scientists.The variation characteristics of urban CO_(2ff) at different temporal and spatial scales were obtained through the analysis of ~(14)C in air,tree ring and annual plant samples.Our results show that the northern cities are the key points to reduce carbon emissions,and that the CO_(2ff) emissions can be reduced simultaneously by controlling atmospheric pollutant emissions,indicating a synergistic emission reduction.It was found that CO_(2ff) in Xi'an was mainly from local coal-burning emissions with the use of improved WRF-CHEM model and δ~(13)C.Finally,the yearly CO_(2ff) traced by tree-ring ~(14)C in Xi'an showed similar trends and amplitudes with the statistical data of carbon emissions,which indicates that the ~(14)C tracing method and statistical method can be mutually validated to ensure the reliability of the data.In order to promote the ~(14)C trace study to serve the national carbon emission reduction task,we suggest that the urban atmospheric Δ~(14)CO_2 observation network should be established as soon as possible,and that this study should be enhanced with more scientists involved in it and more financial resources to support it. |
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来源
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地球科学进展
,2020,35(9):881-889 【核心库】
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DOI
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10.11867/j.issn.1001-8166.2020.079
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关键词
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化石源CO_2 (CO_(2ff))
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Δ~(14)CO_2
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源解析
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碳减排
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地址
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1.
中国科学院地球环境研究所, 黄土与第四纪地质国家重点实验室;;中国科学院第四纪科学与全球变化卓越创新中心, 陕西, 西安, 710061
2.
西安加速器质谱中心, 陕西省加速器质谱技术及应用重点实验室, 陕西, 西安, 710061
3.
西安地球环境创新研究院, 陕西, 西安, 710061
4.
北京师范大学, 北京, 100875
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语种
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中文 |
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文献类型
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综述型 |
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ISSN
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1001-8166 |
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学科
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地质学;环境污染及其防治 |
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基金
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国家自然科学基金重点项目
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陕西省自然科学基础研究计划项目
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文献收藏号
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CSCD:6834516
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