Spatiotemporal Trends of Elemental Carbon and Char/Soot Ratios in Five Sediment Cores from Eastern China Marginal Seas: Indicators of Anthropogenic Activities and Transport Patterns

Fang Yin; Chen Yingjun; Lin Tian; Hu Limin; Tian Chongguo; Luo Yongming; Yang Xin; Li Jun; Zhang Gan

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Spatiotemporal Trends of Elemental Carbon and Char/Soot Ratios in Five Sediment Cores from Eastern China Marginal Seas: Indicators of Anthropogenic Activities and Transport Patterns

机译：中国东部边缘海五个沉积岩芯中元素碳和碳/烟灰比的时空趋势：人为活动和运输方式的指标

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Elemental carbon (EC), the highly recalcitrant carbonaceous material released exclusively from fossil fuel combustion and biomass burning, is a preferred geochemical agent for evaluating anthropogenic activities. We investigated the spatiotemporal trends of EC and char/soot ratios (char and soot, the two subtypes of EC, differ in formation mechanisms and physicochemical characteristics) in five sediment cores from eastern China marginal seas, spatially spanning from inshore coastal mud areas to offshore remote mud areas. The temporal profiles of EC depositional fluxes closely tracked socioeconomic development in China over the past similar to 150 years, with the most pronounced increasing trend beginning in the early 1980s, commensurate with the implementation of national policy of Reform and Open in 1978. The temporal EC profiles in China differed significantly from those in European/American countries, reflecting their different socioeconomic development stages. The spatiotemporal trends of char/soot ratios were also highly informative. Temporally, they decreased from bottom to subsurface layers, indicating the switch of China from an agricultural economy to an industrial economy during the 20th century. Spatially, they decreased from inshore to offshore areas, suggesting the differential transport patterns of EC among these sampling regimes.

机译：元素碳（EC）是仅从化石燃料燃烧和生物质燃烧中释放的高难燃碳质材料，是评估人为活动的首选地球化学试剂。我们调查了中国东部边缘海的五个沉积岩心的EC和碳/烟灰比（碳和烟灰，EC的两种亚型，形成机制和理化特性不同）的时空趋势，其空间分布范围从沿海近海泥浆区到近海偏远的泥泞地区。欧共体沉积通量的时间变化特征密切跟踪了过去150年来中国的社会经济发展，最明显的增长趋势始于1980年代初，与1978年国家改革开放政策的实施相称。中国的概况与欧美国家的概况明显不同，反映了它们不同的社会经济发展阶段。煤/烟灰比的时空趋势也非常有用。从暂时上看，它们从底层到地下逐渐减少，表明中国在20世纪从农业经济向工业经济转变。从空间上看，它们从近海区域到近海区域有所减少，这表明在这些抽样制度中，EC的运输方式有所不同。

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来源
《Environmental Science & Technology》 |2018年第17期|9704-9712|共9页
作者
Fang Yin; Chen Yingjun; Lin Tian; Hu Limin; Tian Chongguo; Luo Yongming; Yang Xin; Li Jun; Zhang Gan;
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作者单位

Tongji Univ, Key Lab Cities Mitigat & Adaptat Climate Change S, Coll Environm Sci & Engn, Shanghai 200092, Peoples R China;

Tongji Univ, Key Lab Cities Mitigat & Adaptat Climate Change S, Coll Environm Sci & Engn, Shanghai 200092, Peoples R China;

Chinese Acad Sci, Guiyang Inst Geochem, State Key Lab Environm Geochem, Guiyang 550081, Guizhou, Peoples R China;

State Ocean Adm, Inst Oceanog 1, Key Lab Marine Sedimentol & Environm Geol, Qingdao 266061, Peoples R China;

Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China;

Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China;

Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;

Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China;

Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Guangdong, Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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Spatiotemporal Trends of Elemental Carbon and Char/Soot Ratios in Five Sediment Cores from Eastern China Marginal Seas: Indicators of Anthropogenic Activities and Transport Patterns

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