文献类型： 外文期刊

作者： Zhao, Xiangwei ¹ ; Song, Zhaoliang ¹ ; Wu, Yuntao ⁴ ; Van Zwieten, Lukas ⁵ ; Guo, Laodong ⁶ ; Yu, Changxun ⁷ ; Li, Zimin ⁸ ; Wu, Lele ¹ ; Yang, Xiaomin ⁹ ; Ran, Xiangbin ¹⁰ ; Sun, Jun ¹² ; Wei, Yuqiu ¹³ ; Wang, Yidong ¹⁴ ; Yuan, Peng ¹⁵ ; Zhang, Jianping ¹⁶ ; Sun, Xiaole ¹⁷ ; Zuo, Xinxin ¹⁸ ; Vancov, Tony ¹⁹ ; Liu, Cong-Qiang ¹ ; Wang, Hailong ²⁰ ;

作者机构： 1.Tianjin Univ, Inst Surface Earth Syst Sci, Sch Earth Syst Sci, Tianjin, Peoples R China

2.Tianjin Univ, Tianjin Key Lab Earth Crit Zone Sci & Sustainable, Tianjin, Peoples R China

3.Haihe Lab Sustainable Chem Transformat, Tianjin, Peoples R China

4.Lishui Univ, Coll Ecol, Lishui, Zhejiang, Peoples R China

5.Wollongbar Primary Ind Inst, NSW Dept Primary Ind, Wollongbar, NSW, Australia

6.Univ Wisconsin Milwaukee, Sch Freshwater Sci, Milwaukee, WI USA

7.Linnaeus Univ, Dept Biol & Environm Sci, Kalmar, Sweden

8.Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess & Quaternary Geol, Xian, Peoples R China

9.Guizhou Univ, Coll Resources & Environm Engn, Key Lab Karst Georesources & Environm, Minist Educ, Guiyang, Peoples R China

10.Minist Nat Resources, Inst Oceanol 1, Marine Ecol Res Ctr, Qingdao, Peoples R China

11.Minist Nat Resources, Inst Oceanol 1, Key Lab Marine Ecoenvironm Sci & Technol, Qingdao, Peoples R China

12.China Univ Geosci Wuhan, State Key Lab Biogeol & Environm Geol, Wuhan, Peoples R China

13.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Key Lab Sustainable Dev Marine Fisheries, Minist Agr & Rural Affairs, Qingdao, Peoples R China

14.Tianjin Normal Univ, Tianjin Key Lab Water Resources & Environm, Tianjin, Peoples R China

15.Chinese Acad Sci, Guangzhou Inst Geochem, CAS Key Lab Mineral & Metallogeny, Guangdong Prov Key Lab Mineral Phys & Mat, Guangzhou, Peoples R China

16.Chinese Acad Sci, Inst Geol & Geophys, Key Lab Cenozo Geol & Environm, Beijing, Peoples R China

17.Chinese Acad Sci, Inst Oceanol, Qingdao, Peoples R China

18.Fujian Normal Univ, Sch Geog Sci, Fuzhou, Peoples R China

19.Elizabeth Macarthur Agr Inst, NSW Dept Primary Ind, Menangle, NSW, Australia

20.Foshan Univ, Sch Environm & Chem Engn, Foshan, Peoples R China

期刊名称：LIMNOLOGY AND OCEANOGRAPHY （ 影响因子：3.7； 五年影响因子：4.5 ）

ISSN： 0024-3590

年卷期： 2024 年 69 卷 12 期

页码：

收录情况： SCI

摘要： Biogenic silica (biogenic Si) is a bioactive component crucial for the biogeochemical cycling of Si in terrestrial and aquatic ecosystems. Its formation and dissolution dynamics are intricately linked to carbon (C) cycling. However, knowledge about the source, composition, and factors controlling the distribution of biogenic Si in coastal wetland sedimentary environments is still limited. To address this lack of knowledge, we introduced a suite of geometric models for biogenic Si biovolume calculation and investigated biogenic Si assemblages, along with biogenic Si and biogenic Si-occluded C contents, in sediments from representative coastal wetlands along the west coast of Bohai Bay. Our analysis showed that sedimentary biogenic Si predominantly derived from phytoliths (78.1% +/- 5.8%), diatoms (18.2% +/- 4.8%), and sponge spicules (3.7% +/- 2.9%). Notably, phytolith assemblages were primarily composed of forms derived from the Poaceae family. The biogenic Si-occluded C content (0.035-1.870 g kg-1) within these wetland sediments was consistent across both sites, accounting for 0.97-5.71% of the total organic C pool. Structural equation modeling indicated that total organic C, pH, and amorphous aluminum oxides either directly or indirectly influenced the biogenic Si content in coastal wetlands sediments. These results demonstrate the critical role that biogenic Si plays in the Si biogeochemical cycle and provide valuable information that advances our understanding of the biogeochemical interactions between Si and C in coastal wetland ecosystems.