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Enhancing phytolith carbon sequestration in rice ecosystems through basalt powder amendment

Guo, Fengshan ; Song, Zhaoliang ; Sullivan, Leigh ; Wang, Hailong ; Liu, Xueyan ; Wang, Xudong ; Li, Zimin ; Zhao, Yuying

Science bulletin (Beijing), 2015-03, Vol.60 (6), p.591-597 [Periódico revisado por pares]

Beijing: Elsevier B.V

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Título:
Enhancing phytolith carbon sequestration in rice ecosystems through basalt powder amendment
Autor: Guo, Fengshan ; Song, Zhaoliang ; Sullivan, Leigh ; Wang, Hailong ; Liu, Xueyan ; Wang, Xudong ; Li, Zimin ; Zhao, Yuying
Assuntos: basalt ; Basalt powder amendment ; carbon ; Carbon sequestration ; Carbon sink ; carbon sinks ; Chemistry/Food Science ; cropland ; crops ; Earth Sciences ; Engineering ; global warming ; Humanities and Social Sciences ; humans ; Life Sciences ; multidisciplinary ; Oryza sativa ; Physics ; Phytolith ; phytoliths ; plant anatomy ; plant response ; Rice ; Science ; Science (multidisciplinary) ; silicon ; terrestrial ecosystems
É parte de: Science bulletin (Beijing), 2015-03, Vol.60 (6), p.591-597
Notas: http://dx.doi.org/10.1007/s11434-015-0729-8
Descrição: 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 (0.005–0.041Mg 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 × 108ha had a similar flux of PhytOC production in this study, 0.61 × 107 to 1.54 × 107Mg 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.
Editor: Beijing: Elsevier B.V
Idioma: Inglês

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Enhancing phytolith carbon sequestration in rice ecosystems through basalt powder amendment

Guo, Fengshan ; Song, Zhaoliang ; Sullivan, Leigh ; Wang, Hailong ; Liu, Xueyan ; Wang, Xudong ; Li, Zimin ; Zhao, Yuying

Beijing: Elsevier B.V

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