Biogenic Silica Composition and Storage in the Yellow River Delta Wetland with Implications for the Carbon Preservation
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GENERAL WETLAND SCIENCE
Biogenic Silica Composition and Storage in the Yellow River Delta Wetland with Implications for the Carbon Preservation Jun Liu 1,2 & Zhaoliang Song 3 & Jianbu Wang 1 & Alexander F. Bouwman 4,5,6 & Menglu Li 1 & Sen Liu 7 & Lei Cao 8 & Jiaye Zang 1 & Xiangbin Ran 1,2 Received: 15 February 2019 / Accepted: 28 September 2019 # Society of Wetland Scientists 2019
Abstract The composition and accumulation of BSi and its role in C sequestration in the YRDW were quantified based on field investigation combined with remote sensing observation in the Yellow River Delta Wetland (YRDW). Results show that the soil BSi pool in the YRDW mainly consists of phytoliths. The pools of BSi, TOC, and BSi-occluded C (OCBSi) for aboveground plants in the YRDW are 7.6 g m−2, 129 g m−2 and 0.13 g m−2, respectively. Surface soil (0–10 cm) stocks of BSi, TOC, and OCBSi are 1780 g m−2, 840 g m−2 and 40 g m−2. Our results showed that BSi preservation efficiencies of BSi (52%) and (OCBSi) (51%) in deep soil layers exceed those of TOC (35%) based on the vertical variation of BSi in the sediment. Approximately 333 t of C fixed by plants is occluded in the phytoliths as OCBSi in the YRDW. Almost half of this OCBSi is preserved in the sediment in stable form. The YRDW is therefore an important sink for BSi and BSi-occluded C. Keywords Biogenic silica (BSi) . Phytoliths . BSi-occluded C (OCBSi) . Organic carbon . Carbon sequestration . Yellow River Delta wetland (YRDW)
Electronic supplementary material The online version of this article (https://doi.org/10.1007/s13157-019-01233-z) contains supplementary material, which is available to authorized users. * Xiangbin Ran [email protected]
1
Research Center for Marine Ecology, First Institute of Oceanography, Ministry of Natural Resources, No. 6, Xianxialing Road, Qingdao 266061, China
2
Zhaoliang Song [email protected]
Laboratory for Marine Geology, Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, China
3
Jianbu Wang [email protected]
Institute of the Surface-Earth System Science Research, Tianjin University, Tianjin 300072, China
4
Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao 266100, People’s Republic of China
5
Department of Earth Sciences, Faculty of Geosciences, Utrecht University, Princetonlaan 8a, 3584 CB Utrecht, The Netherlands
6
Department of Earth Sciences–Geochemistry, Utrecht University, P.O. Box 80021, 3508 TA Utrecht, The Netherlands
Lei Cao [email protected]
7
Tianjin Marine Environmental Monitoring Central Station, State Oceanic Administration, Tianjin 300450, China
Jiaye Zang [email protected]
8
Deep Sea Research Center, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China
Jun Liu [email protected]
Alexander F. Bouwman [email protected] Menglu Li [email protected] Sen Liu [email protected]
Wetlands
Introduction
Materials and Methods
The carbon (C) cycle and its coupling with silicon (Si) in ecosystems
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