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Paleoenvironment change and its impact on carbon and nitrogen accumulation in the Zoige wetland, northeastern Qinghai-Tibetan Plateau over the past 14,000 years
Zeng, Mengxiu1; Zhu, Cheng1; Song, Yougui2; Ma, Chunmei1; Yang, Zhenjing3
2017-04-01
Source PublicationGEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
Volume18Issue:4Pages:1775-1792
SubtypeArticle
AbstractAs the largest alpine wetland and peat deposition area in China, the Zoige wetland is climatically sensitive. The organic matter (OM) in peat stores copious environmental information. Here we report new data on the organic geochemistry of a 4.5 m peat profile HY2014 from southern Zoige wetland. Based on closely spaced accelerator mass spectrometry (AMS) C-14 dating, we established a high-resolution geochronological framework beginning at 14,057 a BP. Moreover, we estimated the sedimentation flux of TOC and TN (SFs) and their influencing factors. Before 10,916 a BP, the lake shrunk and peat began to develop under cold and dry conditions, and SFs were at their lowest values due to low productivity. More OM originated from hydrophyte and marsh plants. From 10,916 to 3050 a BP, peat was widely and well developed, and the climate was warm and humid, despite a cooling and drying trend. The HY2014 profile experienced an optimum climate during 10,91626000 a BP, when SFs had the highest values that benefited from high productivity, and OM mainly originated from terrestrial plants. After 3050 a BP, the climate was the coldest and driest. The high SFs over the past 2000 a BP were mainly resulted from the low decomposition rate. The plant community, primary productivity, and decomposition rate were closely linked with the temporal variation of SFs. The environment change was mainly controlled by summer solar insolation, and the Zoige wetland was significantly influenced by the Indian summer monsoon.
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1002/2016GC006718
WOS KeywordINDIAN-SUMMER MONSOON ; NORTH-ATLANTIC CLIMATE ; HOLOCENE VEGETATION HISTORY ; EAST-ASIAN MONSOON ; LAST 12,000 YEARS ; LAKE-SEDIMENTS ; ORGANIC GEOCHEMISTRY ; SOUTHWESTERN CHINA ; YUNNAN PROVINCE ; HIGH-RESOLUTION
Indexed BySCI
Language英语
WOS Research AreaGeochemistry & Geophysics
WOS SubjectGeochemistry & Geophysics
WOS IDWOS:000403478500026
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/5459
Collection古环境研究室
Affiliation1.Nanjing Univ, Sch Geog & Oceanog Sci, Nanjing, Jiangsu, Peoples R China
2.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Xian, Peoples R China
3.Chinese Acad Geol Sci, Inst Hydrogeol & Environm Geol, Shijiazhuang, Peoples R China
Recommended Citation
GB/T 7714
Zeng, Mengxiu,Zhu, Cheng,Song, Yougui,et al. Paleoenvironment change and its impact on carbon and nitrogen accumulation in the Zoige wetland, northeastern Qinghai-Tibetan Plateau over the past 14,000 years[J]. GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,2017,18(4):1775-1792.
APA Zeng, Mengxiu,Zhu, Cheng,Song, Yougui,Ma, Chunmei,&Yang, Zhenjing.(2017).Paleoenvironment change and its impact on carbon and nitrogen accumulation in the Zoige wetland, northeastern Qinghai-Tibetan Plateau over the past 14,000 years.GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS,18(4),1775-1792.
MLA Zeng, Mengxiu,et al."Paleoenvironment change and its impact on carbon and nitrogen accumulation in the Zoige wetland, northeastern Qinghai-Tibetan Plateau over the past 14,000 years".GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS 18.4(2017):1775-1792.
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