Preprints
https://doi.org/10.5194/bg-2018-140
https://doi.org/10.5194/bg-2018-140
26 Apr 2018
 | 26 Apr 2018
Status: this preprint was under review for the journal BG but the revision was not accepted.

Phylogeny of the Stipa and implications for grassland evolution in China: based on biogeographic evidence

Qing Zhang, Junjun Chen, and Yong Ding

Abstract. The evolution of Chinese grassland is a still an important question biogeography. In this study, the phylogeny of 20 Stipa species (extensively distributed in Chinese grassland) was established to explore the origin and dispersal routes of Chinese grassland. It showed that Stipa species originated at 28 MaBP and they started to differentiate in central Inner Mongolia at 22 MaBP. Then, Stipa species expanded along four routes: (1) they expanded from central Mongolia to the Qilian Mountains, Qinghai, and western Tibet at 16 MaBP. They then gradually expanded from western to eastern Tibet from 11–6 MaBP. (2) At 12 MaBP, they expanded from central Inner Mongolia to the Helan Mountains. (3) At 8 MaBP, they expanded from central Inner Mongolia to the Xinjiang area. (4) At 4 MaBP, they expanded from central to eastern Inner Mongolia. Therefore, we could deduce the formation order of Chinese grasslands: central Inner Mongolia > Qilian Mountains > Qinghai > western Tibet > Helan Mountains > Xinjiang > central Tibet > eastern Tibet > eastern Inner Mongolia. We highlight the importance of the uplift of the Qinghai-Tibet Plateau and paleoclimate changes in triggering the origin and evolution of Stipa species and Chinese grasslands.

Publisher's note: Copernicus Publications remains neutral with regard to jurisdictional claims made in the text, published maps, institutional affiliations, or any other geographical representation in this preprint. The responsibility to include appropriate place names lies with the authors.
Qing Zhang, Junjun Chen, and Yong Ding
 
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Status: closed
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Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
Qing Zhang, Junjun Chen, and Yong Ding
Qing Zhang, Junjun Chen, and Yong Ding

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