Reconstruction of terrestrial productivity of Yichang region in the past 9000 years from stalagmite P/Ca ratio

CHEN Fei-fei; HU Chao-yong; SHI Yu; RUAN Jiao-yang

doi:10.3969/j.issn.1001-4810.2010.03.010

Volume 29 Issue 3

Sep. 2010

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Article Navigation > CARSOLOGICA SINICA > 2010 > 29(3): 280-284

CHEN Fei-fei, HU Chao-yong, SHI Yu, RUAN Jiao-yang. Reconstruction of terrestrial productivity of Yichang region in the past 9000 years from stalagmite P/Ca ratio[J]. CARSOLOGICA SINICA, 2010, 29(3): 280-284. doi: 10.3969/j.issn.1001-4810.2010.03.010

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CHEN Fei-fei, HU Chao-yong, SHI Yu, RUAN Jiao-yang. Reconstruction of terrestrial productivity of Yichang region in the past 9000 years from stalagmite P/Ca ratio[J]. CARSOLOGICA SINICA, 2010, 29(3): 280-284. doi: 10.3969/j.issn.1001-4810.2010.03.010

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Reconstruction of terrestrial productivity of Yichang region in the past 9000 years from stalagmite P/Ca ratio

doi: 10.3969/j.issn.1001-4810.2010.03.010

Key Laboratory of Biogeology and Environmental Geology, Ministry of Education, China University of Geology

Received Date: 2010-08-05
Publish Date: 2010-09-25

Abstract

Abstract

Terrestrial productivity plays an important role in the field of global change research, especially in global carbon recycling research. In this paper, geochemical composition of P and Ca in stalagmite HS4 from Heshang Cave, Qingjiang, Hubei Province is analyzed to investigate the response of stalagmite P/Ca ratio to the terrestrial productivity. The results prove that the P/Ca recorded in the spleothem in recent 50 years is significantly correlated with the local terrestrial productivity calculated by Thornthwaite Memorial Productivity Model, which implying stalagmite P/Ca may be the index for local terrestrial paleo-productivity. Based on P/Ca in the stalagmite HS4, regional paleo-productivity in Yichang are reconstructed. It is found that terrestrial productivity fluctuated during the past 9 000 years, which was low in 8.9ka～6.5ka BP, increased significantly during 6.5ka～5.0ka BP, and reached the top in 6.4ka～5.6kaBP, then fell to a low lever in 5.0ka～4.0ka BP; and increased gradually in 4.0ka～1.5ka BP, and after 1.5kaBP, lowered again. The fluctuation of terrestrial productivity is obviously constrained by global and regional climate.
- stalagmite,
- P/Ca ratio,
- terrestrial productivity,
- Yichang region

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References(36)

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Reconstruction of terrestrial productivity of Yichang region in the past 9000 years from stalagmite P/Ca ratio

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Reconstruction of terrestrial productivity of Yichang region in the past 9000 years from stalagmite P/Ca ratio

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