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Salt-tolerant plant moderates the effect of salinity on soil organic carbon mineralization in a subtropical tidal wetland

文献类型：期刊论文

作者Chen, Xin5,6; Luo, Min1,5,6; Tan, Ji3,4,6; Zhang, Changwei5,6; Liu, Yuxiu3,4,6; Huang, Jiafang3,4,6; Tan, Yang2; Xiao, Leilei2; Xu, Zhanghua1,5,6
刊名SCIENCE OF THE TOTAL ENVIRONMENT
出版日期2022-09-01
卷号837页码:13
ISSN号0048-9697
关键词Salinization Tidal wetland Salt-tolerant plant Soil organic carbon mineralization Bacterial and fungal community structure Carbon-acquiring enzyme activity
DOI10.1016/j.scitotenv.2022.155855
通讯作者Luo, Min(luomin@fzu.edu.cn) ; Xu, Zhanghua(fzucar@fzu.edu.cn)
英文摘要Although salinization is widely known to affect cycling of soil carbon (C) in tidal freshwater wetlands, the role of the presence or absence of plants in mediating the responses of soil organic carbon (SOC) mineralization to salinization is poorly understood. In this study, we translocated soils collected from a tidal freshwater wetland to sites with varying salinities along a subtropical estuarine gradient and established unplanted and planted (with the salt-tolerant plant Cyperus malaccensis Lam.) mesocosms at each site. We simultaneously investigated cumulative soil CO2 emissions, C-acquiring enzyme activities, availability of labile organic C (LOC), and structures of bacterial and fungal communities. Overall, in the planted mesocosm, the soil LOC content and the activities of beta-1,4-glucosidase, cellobiohydrolase, phenol oxidase, and peroxidase increased with salinization. However, in the unplanted mesocosm, soil LOC content decreased with increasing salinity, whereas all the C-acquiring enzyme activities did not change. In addition, salinization favored the dominance of bacterial and fungal copiotrophs (e.g., gamma-Proteobacteria, Bacteroidetes, Firmicutes, and Ascomycota) in the planted mesocosms. Contrarily, in the unplanted mesocosms salinization favored bacterial and fungal oligotrophs (e.g., alpha-Proteobacteria, Chloroflexi, Acidobacteria, and Basidiomycota). In both planted and unplanted mesocosms, cumulative soil CO2 emissions were affected by soil LOC content, activities of C-acquiring enzymes, and microbial C-use trophic strategies. Overall, cumulative soil CO(2 )emissions increased by 35% with increasing salinity in the planted mesocosm but decreased by 37% as salinity increased in the unplanted mesocosm. Our results demonstrate that the presence or absence of salt-tolerant plants can moderate the effect of salinity on SOC mineralization in tidal wetland soils. Future C prediction models should embed both planted and unplanted modules to accurately simulate cycling of soil C in tidal wetlands under sea level rise.
WOS关键词MICROBIAL COMMUNITY STRUCTURE ; SALTWATER INTRUSION ; MATTER MINERALIZATION ; ENZYME-ACTIVITY ; SALINIZATION ; RESPIRATION ; ACCEPTORS ; OXIDATION ; RESPONSES ; BIOMASS
WOS研究方向Environmental Sciences & Ecology
语种英语
WOS记录号WOS:000806056000004
资助机构National Science Foundation of China ; Natural Science Foundation of Fujian Province ; Science and Technology Projects of the Forest Bureau of Fujian Province
源URL[http://ir.yic.ac.cn/handle/133337/31198]  
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Luo, Min; Xu, Zhanghua
作者单位1.Fuzhou Univ, Coll Environm & Safety Engn, Wulongjiang North Ave St 2,Minhou Cty, Fuzhou 350108, Peoples R China
2.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China
3.Fujian Normal Univ, Coll Geog Sci, Fuzhou, Peoples R China
4.Fujian Normal Univ, Key Lab Humid Subtrop Ecogeog Proc, Minist Educ, Fuzhou 350007, Peoples R China
5.Fuzhou Univ, Coll Environm & Safety Engn, Fuzhou 350108, Peoples R China
6.Fuzhou Univ, Res Ctr Geog & Ecol Environm, Fuzhou 350108, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Xin,Luo, Min,Tan, Ji,et al. Salt-tolerant plant moderates the effect of salinity on soil organic carbon mineralization in a subtropical tidal wetland[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2022,837:13.
APA Chen, Xin.,Luo, Min.,Tan, Ji.,Zhang, Changwei.,Liu, Yuxiu.,...&Xu, Zhanghua.(2022).Salt-tolerant plant moderates the effect of salinity on soil organic carbon mineralization in a subtropical tidal wetland.SCIENCE OF THE TOTAL ENVIRONMENT,837,13.
MLA Chen, Xin,et al."Salt-tolerant plant moderates the effect of salinity on soil organic carbon mineralization in a subtropical tidal wetland".SCIENCE OF THE TOTAL ENVIRONMENT 837(2022):13.

入库方式： OAI收割

来源：烟台海岸带研究所

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