期刊
EARTH-SCIENCE REVIEWS
卷 115, 期 4, 页码 319-331出版社
ELSEVIER
DOI: 10.1016/j.earscirev.2012.09.006
关键词
Plant impact; Biogeochemical cycle; Silicon; Carbon; Carbon sequestration
资金
- National Natural Science Foundation of China [41103042, 31270667]
- Zhejiang Province Key Science and Technology Innovation Team [2010R50030]
- Zhejiang Provincial Natural Science Foundation [Y5080110, Z5080203]
- State Key Laboratory of Environmental Geochemistry [SKLEG9011]
- Zhejiang A & F University Research and Development Fund [2010FR097]
The coupled terrestrial biogeochemical cycles of silicon (Si) and carbon (C) that are driven by plant action play a crucial role in the regulation of atmospheric CO2. Generally, the processes involved in the coupled cycles of Si and C include plant-enhanced silicate weathering, phytolith formation and solubilization, secondary aluminosilicate accumulation, phytolith occlusion of C as well as physico-chemical protection of organic C in soils. There is increasing evidence of biological pumping of Si in terrestrial ecosystems, suggesting that complex feedbacks exist amongst the processes within the coupled Si and C cycles. Recent advances in the coupled Si and C cycles offer promising new possibilities for enhancing atmospheric CO2 sequestration. Organic mulching, rock powder amendment, cultivating Si-accumulating plants and partial plant harvesting are potential measures that may allow for long-term manipulation and biogeochemical sequestration of atmospheric CO2 in soil-plant systems. (C) 2012 Elsevier B.V. All rights reserved.
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