IOCAS-IR  > 海洋地质与环境重点实验室
Human impact overwhelms long-term climate control of weathering and erosion in southwest China
Wan, Shiming1; Toucanne, Samuel2; Clift, Peter D.3; Zhao, Debo1; Bayon, Germain2,4; Yu, Zhaojie5; Cai, Guanqiang6; Yin, Xuebo1; Revillon, Sidonie7; Wang, Dawei1; Li, Anchun1; Li, Tiegang1
2015-05-01
Source PublicationGEOLOGY
Volume43Issue:5Pages:439-442
SubtypeArticle
AbstractDuring the Holocene there has been a gradual increase in the influence of humans on Earth systems. High-resolution sedimentary records can help us to assess how erosion and weathering have evolved in response to recent climatic and anthropogenic disturbances. Here we present data from a high-resolution (similar to 75 cm/k.y.) sedimentary archive from the South China Sea. Provenance data indicate that the sediment was derived from the Red River, and can be used to reconstruct the erosion and/or weathering history in this river basin. Accelerator mass spectrometry C-14 dating provides direct age control and reveals coherent variations in clay mineralogy, geochemistry, and terrigenous flux, indicative of strong chemical weathering and physical erosion during the mid-Holocene warm period (6400-4000 cal [calibrated] yr B.P.), followed by weakening from ca. 4000-1800 cal yr B.P., and renewed intensification since 1800 cal yr B.P.. Comparison with climatic records from China indicates that precipitation and temperature controlled both physical erosion and chemical weathering intensity before 1800 cal yr B.P.. However, weathering proxies in the offshore sediment indicate recent increased soil erosion. We suggest that enhanced human activity (deforestation, cultivation, and mining) since the end of the Chinese Han Dynasty (220 CE) has overwhelmed the natural climatic controls on erosion in the Red River.
DOI10.1130/G36570.1
Indexed BySCI
Language英语
WOS IDWOS:000357619400018
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/48985
Collection海洋地质与环境重点实验室
Affiliation1.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Geol & Environm, Qingdao 266071, Peoples R China
2.IFREMER, Unite Rech Geosci Marines, F-29280 Plouzane, France
3.Louisiana State Univ, Dept Geol & Geophys, Baton Rouge, LA 70803 USA
4.Royal Museum Cent Africa, Dept Earth Sci, B-3080 Tervuren, Belgium
5.Univ Paris 11, CNRS, Lab IDES, UMR 8148, F-91405 Orsay, France
6.Guangzhou Marine Geol Survey, Guangzhou 510760, Guangdong, Peoples R China
7.IUEM, SEDISOR UMR Domaines Ocean 6538, F-29280 Plouzane, France
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences
Recommended Citation
GB/T 7714
Wan, Shiming,Toucanne, Samuel,Clift, Peter D.,et al. Human impact overwhelms long-term climate control of weathering and erosion in southwest China[J]. GEOLOGY,2015,43(5):439-442.
APA Wan, Shiming.,Toucanne, Samuel.,Clift, Peter D..,Zhao, Debo.,Bayon, Germain.,...&Li, Tiegang.(2015).Human impact overwhelms long-term climate control of weathering and erosion in southwest China.GEOLOGY,43(5),439-442.
MLA Wan, Shiming,et al."Human impact overwhelms long-term climate control of weathering and erosion in southwest China".GEOLOGY 43.5(2015):439-442.
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