The Pleistocene vermicular red earth in South China signaling the global climatic change: The molecular fossil record

Xie, Shucheng; Yi, Yi; Liu, Yuyan; Gu, Yansheng; Ma, Zhenxing; Lin, Wenshi; Wang, Xianyan; Liu, Gang; Liang, Bin; Zhu, Zongmin

doi:10.1360/02yd0555

Cited by 26 publications

(21 citation statements)

References 12 publications

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“…Zhang et al [15] used C 31 /(C 29 +C 31 ) ratio to study paleovegetation change of paleosol S4 and adjacent loess layers in the Luochuan loess section, NW China. In addition, C 27 /C 31 n-alkane ratio has been used to study the relative change of trees and grasses in many sediments [11,16] . Therefore, the ratios between C 27 , C 29 and C 31 can reflect the vegetation variations, thus revealing the climatic change information.…”

Section: Resultsmentioning

confidence: 99%

A comparative study of n-alkane biomarker and pollen records: an example from southern China

et al. 2008

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Section: Resultsmentioning

confidence: 99%

A comparative study of n-alkane biomarker and pollen records: an example from southern China

et al. 2008

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“…Several studies on n-alkanes in soils have been carried out on red earth in southern China, including 12 Pleistocene samples from Changxing, Zhejiang Province [8], 52 Pleistocene samples from Xuancheng, Anhui Province [7] and Table S2. some Pleistocene samples from Xiushui, Jiangxi Province [44]. All of those samples were dominated by n-C 29 or n-C 31 .…”

Section: Discussionmentioning

confidence: 96%

Is the maximum carbon number of long-chain n-alkanes an indicator of grassland or forest? Evidence from surface soils and modern plants

Rao

Zhu

et al. 2011

Chin. Sci. Bull.

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The molecular distribution of long-chain n-alkanes in 62 soil samples collected from diverse locations across eastern China was analyzed. The long-chain n-alkanes were mostly dominated by n-C 29 or n-C 31 , regardless of the overlying vegetation type at each site. The results were compared with those summarized from the literature, covering more than 100 soil samples within China and more than 300 genera of modern plants distributed worldwide. There were similar n-alkane distribution patterns for most genera, with no clear differences among grasses, shrubs, and trees. The evidence from analyses of surface soils and modern plants indicates that the relationship between the molecular distribution of long-chain n-alkanes of surface soils and source vegetation is highly complex, and is influenced by many factors. Further, it is suggested that source vegetation types should not be simply inferred from distribution patterns of long-chain n-alkanes in sediments.

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“…Modern molecule organic geochemistry has demonstrated that the ratio of C 27 /C 31 of n-alkanes is mostly indicative of the relative proportion of wood plants to grass vegetation [35,37,49]. The variation in the ratio of C 27 /C 31 n-alkane in the lacustrine sediments has been demonstrated to be related to the dominant land types shifting between woody plants and grasses [27,33].…”

Section: N-alkanesmentioning

confidence: 99%

Northern Tibetan Plateau cooling and aridification linked to Cenozoic global cooling: Evidence from n-alkane distributions of Paleogene sedimentary sequences in the Xining Basin

et al. 2011

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The Xining Basin on the northeastern Tibetan Plateau holds the longest continuous Cenozoic stratigraphic record in China. The sequence record contains considerable information on the history of Tibetan uplift and associated climatic change. In particular, high resolution n-alkane biomarker proxy and pollen records have been obtained from the Paleogene sediments of the Xiejia section of the basin. A combination of the n-alkane and palynological records reveals that the paleoclimate in the Xining Basin experienced a long-term cooling trend from 50.2 to 28.2 Ma with a distinctive ecological event spanning 37.5 to 32.7 Ma. Since this ecological event, a vertical zonation of vegetation from lowland arid grasses, to middle-elevation subtropical broad-leaf plants, to high-elevation coniferous trees was established. We interpret that these changes in climate and vegetation were probably responses to a combination of long term global cooling since the Eocene climatic optimum and uplift of the surrounding mountains on the northern Tibetan Plateau in the early Cenozoic.

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The Pleistocene vermicular red earth in South China signaling the global climatic change: The molecular fossil record

Cited by 26 publications

References 12 publications

A comparative study of n-alkane biomarker and pollen records: an example from southern China

A comparative study of n-alkane biomarker and pollen records: an example from southern China

Is the maximum carbon number of long-chain n-alkanes an indicator of grassland or forest? Evidence from surface soils and modern plants

Northern Tibetan Plateau cooling and aridification linked to Cenozoic global cooling: Evidence from n-alkane distributions of Paleogene sedimentary sequences in the Xining Basin

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