Mineral Association and Microbial Processing Jointly Prolong Carbon Turnover in Coastal Wetlands
文献类型：期刊论文
| 作者 | Li, Yuan17; Fu, Chuancheng16; Ren, Peng15; Song, Zhaoliang14; Ni, Lingfang13; Wang, Ting17; Yu, Changxun12; Chen, Ji11; Guo, Laodong10; Hartley, Iain P.3 |
| 刊名 | GLOBAL CHANGE BIOLOGY
 |
| 出版日期 | 2026-02-18 |
| 卷号 | 32期号:2页码:16 |
| 关键词 | blue carbon coastal wetland lignin degradation microbial necromass carbon mineral-associated organic carbon soil organic carbon turnover time |
| ISSN号 | 1354-1013 |
| DOI | 10.1111/gcb.70763 |
| 通讯作者 | Song, Zhaoliang(zhaoliang.song@tju.edu.cn) ; Han, Guangxuan(gxh@yic.ac.cn) ; Luo, Yongming(ymluo@issas.ac.cn) |
| 英文摘要 | Coastal margins are critical sites for carbon (C) sequestration, yet the mechanisms stabilizing preaged, allochthonous C (externally-derived biospheric C) in these environments remain poorly understood. Specifically, the interplay between mineral association and microbial processing represents a significant knowledge gap. Here, we investigated C sequestration mechanisms in Chinese mangrove and saltmarsh soils by analyzing topsoils and cores across 36 sites spanning a 20-degree latitudinal transect. We found that saltmarshes, characterized by high mineral accretion and lower relative autochthonous C accumulation, exhibited significantly longer soil organic C (SOC) turnover times than mangroves (topsoils: similar to 2200 vs. similar to 500 years, respectively). This difference corresponded to higher proportions of preaged (similar to 50%) and petrogenic (rock-derived; similar to 20%) SOC in saltmarshes. Linear mixed-effects models (LMM) confirmed that proxies for mineral protection (e.g., Al/Si) and advanced decomposition (lignin oxidation) were robust, positive predictors of turnover time across the latitudinal gradient. Further structural equation modeling (SEM) indicated a depth-dependent shift in drivers. In surface soils, microbial necromass accumulation was a significant predictor of C turnover (coefficient = 0.36). However, at depth (1 m), the degree of lignin degradation emerged as the primary predictor of multi-millennial C persistence (coefficient = 0.45). These results suggest a joint regulation mechanism whereby microbial processing transforms organic matter into stable forms that are subsequently protected by minerals. This mechanism effectively sequesters old, allochthonous C, challenging the paradigm that blue C storage is dominated solely by recent biomass and necessitating a reevaluation of coastal C management frameworks. |
| WOS关键词 | ORGANIC-CARBON ; MURAMIC ACID ; STABILIZATION ; ACCUMULATION ; MANGROVE ; IMPACTS ; STORAGE ; MATTER |
| WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001694760500001 |
| 资助机构 | Natural Science Foundation of Shandong Province, China ; Ocean Negative Carbon Emissions Program ; National Natural Science Foundation of China ; National Key Research and Development Program of China |
| 源URL | [http://ir.yic.ac.cn/handle/133337/42179]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Song, Zhaoliang; Han, Guangxuan; Luo, Yongming |
| 作者单位 | 1.Hong Kong Univ Sci & Technol, Ctr Ocean Res Hong Kong & Macau, Hong Kong, Peoples R China 2.Hong Kong Univ Sci & Technol, Dept Ocean Sci, Hong Kong, Peoples R China 3.Univ Exeter, Coll Life & Environm Sci, Geog, Exeter, England 4.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing, Peoples R China 5.Fujian Normal Univ, Key Lab Humid Subtrop Ecogeog Proc, Minist Educ, Fuzhou, Peoples R China 6.Nanjing Agr Univ, Inst Resource Ecosyst & Environm Agr, Coll Resources & Environm Sci, Nanjing, Peoples R China 7.Hohai Univ, Yangtze Inst Conservat & Dev,Minist Water Resource, Natl Key Lab Water Disaster Prevent, Key Lab Hydrol Cycle & Hydrodynam Syst, Nanjing, Peoples R China 8.Guangdong Univ Technol, Sch Ecol Environm & Resources, Guangzhou, Peoples R China 9.Guangdong Basic Res Ctr Excellence Ecol Secur & Gr, Res Ctr Ecol & Environm Coastal Area & Deep Sea, Southern Marine Sci & Engn Guangdong Lab Guangzhou, Guangzhou, Peoples R China 10.Univ Wisconsin, Sch Freshwater Sci, Milwaukee, WI USA |
| 推荐引用方式 GB/T 7714 | Li, Yuan,Fu, Chuancheng,Ren, Peng,et al. Mineral Association and Microbial Processing Jointly Prolong Carbon Turnover in Coastal Wetlands[J]. GLOBAL CHANGE BIOLOGY,2026,32(2):16. |
| APA | Li, Yuan.,Fu, Chuancheng.,Ren, Peng.,Song, Zhaoliang.,Ni, Lingfang.,...&Luo, Yongming.(2026).Mineral Association and Microbial Processing Jointly Prolong Carbon Turnover in Coastal Wetlands.GLOBAL CHANGE BIOLOGY,32(2),16. |
| MLA | Li, Yuan,et al."Mineral Association and Microbial Processing Jointly Prolong Carbon Turnover in Coastal Wetlands".GLOBAL CHANGE BIOLOGY 32.2(2026):16. |
入库方式： OAI收割
来源：烟台海岸带研究所
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