Phytolith carbon sequestration in China's croplands

Song, Zhaoliang, Wang, Hailong, Strong, Peter James and Guo, Fengshan (2014) Phytolith carbon sequestration in China's croplands. European Journal of Agronomy, 53 10-15. doi:10.1016/j.eja.2013.11.004


Author Song, Zhaoliang
Wang, Hailong
Strong, Peter James
Guo, Fengshan
Title Phytolith carbon sequestration in China's croplands
Journal name European Journal of Agronomy   Check publisher's open access policy
ISSN 1161-0301
1873-7331
Publication date 2014-02
Year available 2014
Sub-type Article (original research)
DOI 10.1016/j.eja.2013.11.004
Open Access Status
Volume 53
Start page 10
End page 15
Total pages 6
Place of publication Amsterdam, Netherlands
Publisher Elsevier
Collection year 2015
Language eng
Formatted abstract
A relatively recent found persistent component of the carbon (C) sink is C occluded within plant phytoliths. We constructed a silica-phytolith content transfer function and used crop production data to explore the phytolith C sink within China's croplands. The purposes of the study are to offer references for agricultural management and contribute to mitigating climate change. The Chinese cropland phytolith sink represented approximately 18% of world's croplands (24.39±8.67Tgyr-1) and sequestered 4.39±1.56Tgyr-1 of carbon dioxide (CO2); more than the USA or India. The predominant crop species were rice (Oryza sativa L., 40%), wheat (Triticum sp., 18%) and corn (Zea mays, 30%), while the main contributing areas were the midsouthern (28%) and eastern (26%) Chinese regions. The sink has doubled since 1978 owing to fertilizer application and irrigation. Therefore, fertilizer application and irrigation in conjunction with other management practices (such as crop pattern optimization) may further enhance the cropland phytolith C sink and thereby mitigate climate change.
Keyword Cropland ecosystem
Phytolith-occluded C (PhytOC)
Carbon sink
China
Climate warming mitigation
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
Non HERDC
 
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