Publication Date:
2018-07-02
Description:
Publication date: Available online 30 June 2018 Source: Earth-Science Reviews Author(s): Zhaoliang Song, Congqiang Liu, Karin Müller, Xiaomin Yang, Yuntao Wu, Hailong Wang The terrestrial biogeochemical silicon (Si) cycle may significantly influence the stabilization of soil organic carbon (SOC), and thus plays an important role in regulating the global carbon (C) balance and climate change. Processes involved in Si-enhanced SOC stability at a decadal or centennial scale include protection of SOC through amorphous Si and interactions of Si-iron (Fe) and Si-aluminum (Al). Strategic manipulation of the Si cycle in terrestrial ecosystems offers a new opportunity to enhance soil C sequestration. Rock powder amendment, establishment of Si-rich plant buffer strips and innovative management practices that return Si-rich biomass materials to soil can be implemented as strategies to enhance soil C sequestration through regulating the terrestrial Si cycle. However, quantifying (i) the contribution of different processes to enhance soil dissolved Si and secondary Si minerals, (ii) the relative importance of different SOC stabilization mechanisms, and (iii) the potential and cost of different measures has not been attempted.
Print ISSN:
0012-8252
Electronic ISSN:
1872-6828
Topics:
Geography
,
Geosciences
