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Enhancing phytolith carbon sequestration in rice ecosystems through basalt powder amendment
Fengshan Guo; Zhaoliang Song; Leigh Sullivan; Hailong Wang; Xueyan Liu; Xudong Wang; Zimin Li; Yuying Zhao
2015
发表期刊Science Bulletin
卷号60期号:6页码:591-597
摘要

Global warming as a result of rapid increase in atmospheric CO2 emission is significantly influencing world’s economy and human activities. Carbon sequestration in phytoliths is regarded as a highly stable carbon sink mechanism in terrestrial ecosystems to mitigate climate change. However, the response of plant phytolith-occluded carbon (PhytOC) to external silicon amendments remains unclear. In this study, we investigated the effects of basalt powder (BP) amendment on phytolith carbon sequestration in rice (Oryza sativa), a high-PhytOC accumulator. The results showed that the contents of phytolith and PhytOC in rice increased with BP amendment. The PhytOC production flux in different rice plant parts varied considerably (0.005–0.041 Mg CO2 ha−1 a−1), with the highest flux in the sheath. BP amendment can significantly enhance flux of phytolith carbon sequestration in croplands by 150%. If the global rice cultivation of 1.55 × 108 ha had a similar flux of PhytOC production in this study, 0.61 × 107 to 1.54 × 107 Mg CO2 would be occluded annually within global rice phytoliths. These findings highlight that external silicon amendment such as BP amendment represents an effective potential management tool to increase long-term biogeochemical carbon sequestration in crops such as rice and may also be an efficient way to mitigate the global warming indirectly.

关键词Phytolith carbon Sink carbon Sequestration basalt Powder Amendment rice
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.gyig.ac.cn/handle/42920512-1/9581
专题环境地球化学国家重点实验室
作者单位1.School of Environment and Resources, Zhejiang Agricultural and Forestry University, Lin’an 311300, China
2.State Key Laboratory of Environmental Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002, China
3.Southern Cross GeoScience, Southern Cross University, Lismore, NSW 2480, Australia
4.Soil Science and Environment Geochemistry, Earth and Life Institute, Universite´ Catholique de Louvain, Croix du Sud 2/L7.05.10, 1348 Louvain-la-Neuve, Belgium
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GB/T 7714
Fengshan Guo,Zhaoliang Song,Leigh Sullivan,et al. Enhancing phytolith carbon sequestration in rice ecosystems through basalt powder amendment[J]. Science Bulletin,2015,60(6):591-597.
APA Fengshan Guo.,Zhaoliang Song.,Leigh Sullivan.,Hailong Wang.,Xueyan Liu.,...&Yuying Zhao.(2015).Enhancing phytolith carbon sequestration in rice ecosystems through basalt powder amendment.Science Bulletin,60(6),591-597.
MLA Fengshan Guo,et al."Enhancing phytolith carbon sequestration in rice ecosystems through basalt powder amendment".Science Bulletin 60.6(2015):591-597.
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