Soil organic carbon fractions and stability shifts in response to plant mixed-growth in coastal wetlands of southeastern China
文献类型：期刊论文
| 作者 | Ren, Xiaoying1; Xu, Jiayi1; Wang, Weiqi1; Yin, Rongbin1; Li, Yuan4,5; Sardans, Jordi2,3; Hou, Ning1; Chen, Junma1; Yu, Siqi1; Chen, Shiyu1 |
| 刊名 | CATENA
 |
| 出版日期 | 2026-02-01 |
| 卷号 | 263页码:14 |
| 关键词 | Southeastern China Organic carbon fractions Carbon pool stability Plant mixing Coastal wetland soils |
| ISSN号 | 0341-8162 |
| DOI | 10.1016/j.catena.2025.109721 |
| 通讯作者 | Wang, Weiqi(wangweiqi15@163.com) |
| 英文摘要 | As crucial blue carbon reservoirs, coastal wetlands regulate regional ecosystem functioning through vegetation succession and soil carbon (C) cycling. In tide-dominated landscapes, plant communities are arranged along geomorphology-, hydrology- and sediment-driven land-sea gradients, creating distinct habitats and soil environments. Mixed plant communities often enhance soil organic carbon (SOC), but their effects on SOC stability and C pool management in coastal wetlands remain unclear. Here, we compared SOC fractions, molecular composition, C pool indices that integrate C lability and management (CPAI, CPMI), and key environmental factors, as well as associated soil physical properties, in pure Phragmites australis wetlands, pure mangrove wetlands and mixed P. australis-mangrove communities in southeastern China. Surface (0-10 cm) soils in mixed wetlands contained 23.7 % and 6.6 % more SOC than pure P. australis and mangrove wetlands, respectively, and showed higher microbial biomass C (MBC) (+18.2 % and + 65.5 %) and dissolved organic C (DOC) (+23.8 % vs. mangroves; p < 0.05). In subsurface soils (10-30 cm), mixed wetlands reduced easily oxidizable C (EOC) by 49.5 % relative to mangroves, but increased MBC by 98.3 %, while DOC decreased by 86.5 % compared with P. australis (p < 0.05). Spectral analyses indicated higher contributions of alkoxy C and lower proportions of aliphatic, aromatic and alkyl C in mixed stands, suggesting a shift toward more microbially processed SOC. Compared with mangroves, mixed communities significantly decreased CPAI (-50.3 %) and CPMI (-45.4 %) (p < 0.05), indicating lower overall C pool activity and management efficiency despite higher labile C inputs. Mixed wetlands also exhibited higher soil water content, lower pH and reduced bulk density. Overall, plant community mixing reshaped SOC fractions, chemical composition and management indices across soil depths, highlighting its complex influence on coastal wetland C stability and sequestration trajectories under ongoing vegetation change. |
| WOS关键词 | MICROBIAL COMMUNITY ; SEQUESTRATION ; CAPACITY ; GRADIENT ; NITROGEN ; STORAGE |
| WOS研究方向 | Geology ; Agriculture ; Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001643207400001 |
| 资助机构 | National Natural Science Foundation of China |
| 源URL | [http://ir.yic.ac.cn/handle/133337/41961]  |
| 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 | Wang, Weiqi |
| 作者单位 | 1.Fujian Normal Univ, Minist Educ, Key Lab Humid Subtrop Ecogeog Proc, Fuzhou 350017, Peoples R China 2.CREAF, Cerdanyola Del Valles 08193, Catalonia, Spain 3.UAB, CSIC, Global Ecol Unit, CREAF, Barcelona 08193, Catalonia, Spain 4.YICCAS, Shandong Key Lab Coastal Environm Proc, Yantai 264003, Peoples R China 5.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ren, Xiaoying,Xu, Jiayi,Wang, Weiqi,et al. Soil organic carbon fractions and stability shifts in response to plant mixed-growth in coastal wetlands of southeastern China[J]. CATENA,2026,263:14. |
| APA | Ren, Xiaoying.,Xu, Jiayi.,Wang, Weiqi.,Yin, Rongbin.,Li, Yuan.,...&Penuelas, Josep.(2026).Soil organic carbon fractions and stability shifts in response to plant mixed-growth in coastal wetlands of southeastern China.CATENA,263,14. |
| MLA | Ren, Xiaoying,et al."Soil organic carbon fractions and stability shifts in response to plant mixed-growth in coastal wetlands of southeastern China".CATENA 263(2026):14. |
入库方式： OAI收割
来源：烟台海岸带研究所
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