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

doi:10.1016/j.scitotenv.2022.155855

	Salt-tolerant plant moderates the effect of salinity on soil organic carbon mineralization in a subtropical tidal wetland
	Chen, Xin 1,2; Luo, Min 1,2,6; Tan, Ji 1,3,4; Zhang, Changwei 1,2; Liu, Yuxiu 1,3,4; Huang, Jiafang 1,3,4; Tan, Yang5 ; Xiao, Leilei5 ; Xu, Zhanghua 1,2,6
发表期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
	2022-09-01
卷号	837 页码:13
关键词	Salinization Tidal wetland Salt-tolerant plant Soil organic carbon mineralization Bacterial and fungal community structure Carbon-acquiring enzyme activity
DOI	10.1016/j.scitotenv.2022.155855
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.
收录类别	SCI
语种	英语
关键词[WOS]	MICROBIAL COMMUNITY STRUCTURE ; SALTWATER INTRUSION ; MATTER MINERALIZATION ; ENZYME-ACTIVITY ; SALINIZATION ; RESPIRATION ; ACCEPTORS ; OXIDATION ; RESPONSES ; BIOMASS
研究领域[WOS]	Environmental Sciences & Ecology
WOS记录号	WOS:000806056000004
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/31199
专题	中国科学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, Res Ctr Geog & Ecol Environm, Fuzhou 350108, Peoples R China 2.Fuzhou Univ, Coll Environm & Safety Engn, Fuzhou 350108, Peoples R China 3.Fujian Normal Univ, Key Lab Humid Subtrop Ecogeog Proc, Minist Educ, Fuzhou 350007, Peoples R China 4.Fujian Normal Univ, Coll Geog Sci, Fuzhou, Peoples R China 5.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China 6.Fuzhou Univ, Coll Environm & Safety Engn, Wulongjiang North Ave St 2,Minhou Cty, 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.