中国西南地区晚二叠世泥炭地净初级生产力及其控制因素<sup>*</sup>

doi:10.7605/gdlxb.2011.05.001

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Abstract Milankovitch theory is an important tool in constraining time in the palaeoenviorment analysis. In this study，the geophysical logs of the Late Permian No.17 Coal in Nuodong，Puan of Guizhou Province and No.10 Coal in Tianyou，Fuyuan of Yunnan Province are analyzed employing spectral analysis.The result shows that the mineral matter content(ash yield)of the coal was possibly influenced by 123ka(eccentricity)，35.6 ka(obliquity)and 21.2 ka(precession)Milankovitch cycles.Using this timeframe，the Lopingian tropical peatland carbon accumulation rate is calculated to be 54.3～77.0 gC/（m²·a），which is expected to correspond to a NPP of 543～1540 gC/（m²·a）. A comparison of NPP and temporal atmospheric composition among the Late Permian，Late Carboniferous and modern time indicates that the Late Permian NPP calculated is consistent with geochemical and palaeobotanical models，supporting a proposal that terrestrial productivity is mainly controlled by temporal atmospheric O₂ and CO₂ levels.

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	Articles by authors
	Shao Longyi
	Wang Hao
	Large D J

Key words： Milankovitch cycle Late Permian peatland carbon accumulation rate net primary productivity(NPP)

Received: 15 May 2011 Published: 01 October 2011

ZTFLH:

P618.117

About author: Shao Longyi，born in 1964，graduated and obtained his Ph.D.degree from China University of Mining and Technology(Beijing)in 1989.Now he is a professor at the School of Geoscience and Survey Engineering of China University of Mining and Technology(Beijing)，with main interests in sedimentology and coal geology.

Cite this article:

Shao Longyi,Wang Hao,Large D J. Net primary productivity and its control of the Late Permian peatlands in southwestern China[J]. JOURNAL OF PALAEOGEOGRAPHY, 2011, 13(5): 473-480.

Shao Longyi,Wang Hao,Large D J. Net primary productivity and its control of the Late Permian peatlands in southwestern China[J]. JOPC, 2011, 13(5): 473-480.

URL:

http://journal09.magtechjournal.com/gdlxb/EN/10.7605/gdlxb.2011.05.001 OR http://journal09.magtechjournal.com/gdlxb/EN/Y2011/V13/I5/473

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