Changes in Organic Carbon Delivery to the Yangtze River Delta Over the Last 2000 Years
Natural processes and anthropogenic activities are vital in dictating the amount and character of organic carbon (OC) input into large river deltas and adjacent shelves. Previous studies have indicated that sediment from the Huanghe River (HR) has significantly affected the formation of the northern...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-05-01
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| Series: | Frontiers in Marine Science |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2022.867820/full |
| _version_ | 1828791934939824128 |
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| author | Liang Zhou Liang Zhou Yang Yang Yong Shi Xiaomei Xu Ya Ping Wang Jianjun Jia Jian Hua Gao Shu Gao |
| author_facet | Liang Zhou Liang Zhou Yang Yang Yong Shi Xiaomei Xu Ya Ping Wang Jianjun Jia Jian Hua Gao Shu Gao |
| author_sort | Liang Zhou |
| collection | DOAJ |
| description | Natural processes and anthropogenic activities are vital in dictating the amount and character of organic carbon (OC) input into large river deltas and adjacent shelves. Previous studies have indicated that sediment from the Huanghe River (HR) has significantly affected the formation of the northern Yangtze River subaqueous delta (YRD) over the past several hundred years. However, whether this process has changed sedimentary OC burial in the YRD remains unclear. A sediment core was collected from the YRD in 2018 CE for optically stimulated luminescence and 210Pb dating as well as grain size, total OC, total nitrogen, and stable-isotope analyses to investigate temporal changes in sedimentary OC over the past 2000 years. The results indicate that changes in terrestrial OC inputs to the YRD have been controlled mainly by the East Asian summer monsoon and anthropogenic influences in the past 2000 years. However, the decreased terrestrial OC inputs after 1385 CE, have been significantly affected by increased contribution of HR sediment to the YRD when the HR lower courses shifted to enter the southern Yellow Sea. This study demonstrates that sediment source changes should not be neglected in analyses of mechanisms and variations in OC burial in estuarine and coastal areas. |
| first_indexed | 2024-12-12T02:59:28Z |
| format | Article |
| id | doaj.art-de57fee7f3c54e099ea8d448c3a44ae2 |
| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-12-12T02:59:28Z |
| publishDate | 2022-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-de57fee7f3c54e099ea8d448c3a44ae22022-12-22T00:40:40ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452022-05-01910.3389/fmars.2022.867820867820Changes in Organic Carbon Delivery to the Yangtze River Delta Over the Last 2000 YearsLiang Zhou0Liang Zhou1Yang Yang2Yong Shi3Xiaomei Xu4Ya Ping Wang5Jianjun Jia6Jian Hua Gao7Shu Gao8School of Geography, Geomatics, and Planning, Jiangsu Normal University, Xuzhou, ChinaHainan Key Laboratory of Marine Geological Resources and Environment, Hainan Marine Geological Survey Bureau, Haikou, ChinaSchool of Marine Science and Engineering, Nanjing Normal University, Nanjing, ChinaMinistry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing, ChinaMinistry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing, ChinaState Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, ChinaState Key Laboratory of Estuarine and Coastal Research, East China Normal University, Shanghai, ChinaMinistry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing, ChinaMinistry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing, ChinaNatural processes and anthropogenic activities are vital in dictating the amount and character of organic carbon (OC) input into large river deltas and adjacent shelves. Previous studies have indicated that sediment from the Huanghe River (HR) has significantly affected the formation of the northern Yangtze River subaqueous delta (YRD) over the past several hundred years. However, whether this process has changed sedimentary OC burial in the YRD remains unclear. A sediment core was collected from the YRD in 2018 CE for optically stimulated luminescence and 210Pb dating as well as grain size, total OC, total nitrogen, and stable-isotope analyses to investigate temporal changes in sedimentary OC over the past 2000 years. The results indicate that changes in terrestrial OC inputs to the YRD have been controlled mainly by the East Asian summer monsoon and anthropogenic influences in the past 2000 years. However, the decreased terrestrial OC inputs after 1385 CE, have been significantly affected by increased contribution of HR sediment to the YRD when the HR lower courses shifted to enter the southern Yellow Sea. This study demonstrates that sediment source changes should not be neglected in analyses of mechanisms and variations in OC burial in estuarine and coastal areas.https://www.frontiersin.org/articles/10.3389/fmars.2022.867820/fullsedimentary organic carbonsediment sourceOC burialHuanghe River sedimentYangtze River Delta |
| spellingShingle | Liang Zhou Liang Zhou Yang Yang Yong Shi Xiaomei Xu Ya Ping Wang Jianjun Jia Jian Hua Gao Shu Gao Changes in Organic Carbon Delivery to the Yangtze River Delta Over the Last 2000 Years Frontiers in Marine Science sedimentary organic carbon sediment source OC burial Huanghe River sediment Yangtze River Delta |
| title | Changes in Organic Carbon Delivery to the Yangtze River Delta Over the Last 2000 Years |
| title_full | Changes in Organic Carbon Delivery to the Yangtze River Delta Over the Last 2000 Years |
| title_fullStr | Changes in Organic Carbon Delivery to the Yangtze River Delta Over the Last 2000 Years |
| title_full_unstemmed | Changes in Organic Carbon Delivery to the Yangtze River Delta Over the Last 2000 Years |
| title_short | Changes in Organic Carbon Delivery to the Yangtze River Delta Over the Last 2000 Years |
| title_sort | changes in organic carbon delivery to the yangtze river delta over the last 2000 years |
| topic | sedimentary organic carbon sediment source OC burial Huanghe River sediment Yangtze River Delta |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2022.867820/full |
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