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  2. 烟台海岸带研究所
  3. 中国科学院烟台海岸带研究所
  4. 中科院海岸带环境过程与生态修复重点实验室
Impacts of Spartina alterniflora invasion on fractions and fungal communities of mineral-associated organic carbon in subtropical coastal wetlands of China

文献类型：期刊论文

作者Wu, Ziwei7,8; Li, Yuan6; Wang, Weiqi7,8; Liu, Xuyang7,8; Hou, Ning7,8; Hei, Jie7,8; Gan, Jiawei5; Song, Zhaoliang5; Fang, Yunying3,4; Sardans, Jordi1,2
刊名CATENA
出版日期2026-05-01
卷号266页码:10
关键词Mineral-associated organic carbon Chemical protection Fungi Spartina alterniflora Coastal wetland
ISSN号0341-8162
DOI10.1016/j.catena.2026.109956
通讯作者Wang, Weiqi(wangweiqi15@163.com)
英文摘要Understanding the stabilization pathways of mineral-associated organic carbon (MAOC) under plant invasion is critical for predicting soil carbon dynamics in coastal wetlands. Spartina alterniflora, a widespread invasive species, exerts substantial ecological impacts, yet its influence on MAOC stabilization remains poorly understood. This study investigated the shifts in MAOC fractions,specifically iron and aluminum oxide-associated (MAOCFe (Al)-OC), calcium-associated MAOC (MAOCCa-OC), and residual MAOC (MAOCResidual-OC), along with soil fungal communities before and after invasion at a subtropical estuarine wetland. Results show that invasion significantly increased MAOCFe(Al)-OC and MAOCCa-OC by 31% and 21%, respectively, while the chemically stable MAOCResidul-OC remained quantitatively dominant. FTIR analysis revealed an enrichment in MAOCaliphatic-OC functional groups, suggesting a shift toward more chemically diverse yet labile carbon inputs. Although fungal alpha-diversity remained unchanged, the invasion drove a distinct functional reconfiguration of the community, characterized by a transition from r-to K-strategies and the proliferation of Saprotroph. Random Forest and redundancy analyses (RDA) identified saprotrophs as pivotal biological regulators (explaining 55% of the variation), exhibiting an apparent ecological coupling with the responsive MAOCCa-OC. These findings suggest that Spartina alterniflora invasion enhances carbon sequestration not only by increasing organic inputs but also by orchestrating a Saprotroph heavy community that strengthens specific mineral-organic associations. This study highlights the synergy between fungal functional shifts and geochemical pathways as a fundamental mechanism governing blue carbon resilience under biological invasions.
WOS关键词SOIL ; PLANT ; MATTER ; STABILIZATION ; DYNAMICS ; CALCIUM ; CLIMATE ; SEQUESTRATION ; DECOMPOSITION ; ACCUMULATION
WOS研究方向Geology ; Agriculture ; Water Resources
语种英语
WOS记录号WOS:001710578600001
资助机构National Natural Science Foundation of China
源URL[http://ir.yic.ac.cn/handle/133337/42237]  
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.CREAF, Cerdanyola Del Valles 08913, Catalonia, Spain
2.UAB, CSIC, CEAB, CREAF,Global Ecol Unit, Cerdanyola Del Valles 08913, Catalonia, Spain
3.Griffith Univ, Sch Environm & Sci, Nathan Campus, Nathan, Qld 4111, Australia
4.Griffith Univ, Australian Rivers Inst, Nathan Campus, Nathan, Qld 4111, Australia
5.Tianjin Univ, Inst Surface Earth Syst Sci, Sch Earth Syst Sci, Tianjin 300192, Peoples R China
6.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
7.Fujian Normal Univ, Inst Geog, Fuzhou 350117, Peoples R China
8.Fujian Normal Univ, Key Lab Humid Subtrop Ecogeog Proc, Minist Educ, Fuzhou 350117, Peoples R China
推荐引用方式
GB/T 7714		 Wu, Ziwei,Li, Yuan,Wang, Weiqi,et al. Impacts of Spartina alterniflora invasion on fractions and fungal communities of mineral-associated organic carbon in subtropical coastal wetlands of China[J]. CATENA,2026,266:10.
APA Wu, Ziwei.,Li, Yuan.,Wang, Weiqi.,Liu, Xuyang.,Hou, Ning.,...&Penuelas, Josep.(2026).Impacts of Spartina alterniflora invasion on fractions and fungal communities of mineral-associated organic carbon in subtropical coastal wetlands of China.CATENA,266,10.
MLA Wu, Ziwei,et al."Impacts of Spartina alterniflora invasion on fractions and fungal communities of mineral-associated organic carbon in subtropical coastal wetlands of China".CATENA 266(2026):10.

入库方式： OAI收割

来源：烟台海岸带研究所

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