globalchange  > 影响、适应和脆弱性
DOI: 10.1016/j.epsl.2018.08.056
Scopus记录号: 2-s2.0-85053076723
论文题名:
Increased seasonality and aridity drove the C4 plant expansion in Central Asia since the Miocene–Pliocene boundary
作者: Shen X.; Wan S.; Colin C.; Tada R.; Shi X.; Pei W.; Tan Y.; Jiang X.; Li A.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 502
起始页码: 74
结束页码: 83
语种: 英语
英文关键词: black carbon ; C4 plant expansion ; Central Asia ; Japan Sea ; Miocene–Pliocene ; westerlies
Scopus关键词: Carbon ; Expansion ; Vegetation ; Black carbon ; Central Asia ; Japan Sea ; Pliocene ; westerlies ; Plant expansion ; aridity ; black carbon ; carbon isotope ; Miocene ; Pliocene ; seasonality ; vegetation type ; westerly ; Central Asia ; Pacific Ocean ; Sea of Japan
英文摘要: Continuous and high-resolution records of the content, mass accumulation rate (MAR) and δ13C values of black carbon obtained from Integrated Ocean Drilling Program (IODP) Site U1430 in the southwestern Japan Sea have been established and combined with previous results obtained from Central Asia. The main objective of this work is to reconstruct the historical changes in vegetation types (C3–C4), and to constrain the driving force of C4 plant expansion over the last 13 Ma. The stable carbon isotope value of black carbon (δ13CBC) shows a major shift since the Miocene–Pliocene boundary (∼5.3 Ma), suggesting significant expansion of C4 plants in broad areas of Central Asia, including the inland basins of northwestern China and the Loess Plateau. However, a decline in the content and MAR of black carbon reveals the absence of any link between fire and C4 plant expansion in Central Asia, due to the dramatic decrease in biomass under a drying regime. On a global scale, asynchronous expansion of C4 plants suggests that regional hydroclimatic change, rather than decline in CO2 concentration, was the most important factor to influence C4 expansion. We propose that the increased seasonality and the enhanced long-term aridity driven by the concurrent decline in winter westerly vapor, and increase in East Asian summer monsoon precipitation, were the main driving forces of C4 plant expansion in broad areas of Central Asia. Variations in winter westerly moisture have played a significant role in changes of regional climate and vegetation in Central Asia since the late Miocene. © 2018 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109648
Appears in Collections:影响、适应和脆弱性
气候变化事实与影响

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作者单位: Key Laboratory of Marine Geology and Environment, Institute of Oceanology, Chinese Academy of Sciences, Qingdao, 266071, China; Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266061, China; University of Chinese Academy of Sciences, Beijing, 100049, China; Laboratoire GEOsciences Paris-Sud (GEOPS), UMR 8148, CNRS-Université de Paris-Sud, Université Paris-Saclay, Bâtiment 504, Orsay Cedex, 91405, France; Department of Earth and Planetary Science, University of Tokyo, Tokyo, 113-0033, Japan; Key Laboratory of Marine Sedimentology and Environmental Geology, First Institute of Oceanography, SOA, Qingdao, 266061, China; Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai, 264003, China; Qingdao Institute of Marine Geology, China Geological Survey, Qingdao, 266071, China

Recommended Citation:
Shen X.,Wan S.,Colin C.,et al. Increased seasonality and aridity drove the C4 plant expansion in Central Asia since the Miocene–Pliocene boundary[J]. Earth and Planetary Science Letters,2018-01-01,502
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