Effect of salinity on the decomposition of soil organic carbon in a tidal wetland
Qu, Wendi; Li, Juanyong; Han, Guangxuan; Wu, Haitao; Song, Weimin; Zhang, Xiaoshuai
Source PublicationJOURNAL OF SOILS AND SEDIMENTS
ISSN1439-0108
2019-02
Volume19Issue:2Pages:609-617
KeywordDissolved organic carbon (DOC) CH4 CO2 Salinity Tidal wetlands
MOST Discipline CatalogueEnvironmental Sciences & Ecology ; Agriculture
DOI10.1007/s11368-018-2096-y
Contribution Rank[Qu, Wendi; Li, Juanyong; Han, Guangxuan; Song, Weimin; Zhang, Xiaoshuai] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China; [Qu, Wendi; Li, Juanyong] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Wu, Haitao] Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Jilin, Peoples R China
Department海岸带环境过程实验室
AbstractPurposeClimate warming and sea level rise have the potential to change the salt level of soil in tidal wetlands. And it is important to clarify the process and the mechanism of decomposition of soil organic carbon in a tidal wetland under varying salinities. The aim of this study was to evaluate the impacts of soil salinity on the decomposition rate of organic carbon (DROC) and dissolved organic carbon (DOC) in a tidal wetland.Materials and methodsTwo types of soil (surface soil in Suaeda salsa and bare tidal flat) were collected, air-dried, and homogenized. After adding different content of salt (0g/L, 3g/L, 6g/L, 9g/L, and 12g/L), the soils were incubated for 28days at stable room temperature (252 degrees C) and added by deionized water to maintain the stability of soil moisture. The gases (CO2 and CH4) emission rates of each salt treatment were measured during 28-day incubation. DROC was determined by the sum of daily CO2-C emission rates and daily CH4-C emission rates in this study.Results and discussionSalt addition inhibited the process of gas emissions and DROC. Gases emission rates and DROC of two types of soil showed similar temporal trends, with distinctive drop in the beginning of experiment and no significant decrease followed. Significant difference of DOC among salt treatments was found in the bare tidal flat soil. Variations of partial correlation between DROC and soil salinity and DOC showed similar trends (e.g., in days 9-18, the positive effect of DOC on DROC was greatly promoted (R-2=0.80, p<0.001), and the negative effect of soil salinity was highly improved (R-2=0.93, p<0.001)). Soil properties, in particular DOC, may be primary factors accounting for the discrepancy of gases emission rates and DROC of two types of soil.Conclusions p id=Par4 Increased soil salinity had a negative effect on DROC during 28-day incubation. The impact of soil salinity and DOC on DROC were varied in different phases of laboratory experiment (soil salinity generally had increasingly negative relationship with DROC, but DOC showed most significantly positive relationship in the middle stage of incubation). Both the formation and consumption of DOC may be valuable for more detail research regarding to decomposition of soil organic carbon.
SubtypeArticle
Funding OrganizationNational Nature Science Foundation of China [41671089] ; Science and Technology Service Network Initiative [KFJ-STS-ZDTP-023] ; Key deployment project of Chinese Academy of Sciences [KFZD-SW-112]
Indexed BySCI
Language英语
WOS KeywordCOASTAL WETLANDS ; WATER ; DYNAMICS ; MARSH ; TEMPERATURE ; COMMUNITY ; SEDIMENT ; GYPSUM
WOS Research AreaEnvironmental Sciences ; Soil Science
WOS IDWOS:000457745700010
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/24633
Collection中科院海岸带环境过程与生态修复重点实验室_海岸带环境过程实验室
中科院海岸带环境过程与生态修复重点实验室
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China;
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China;
3.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Changchun 130102, Jilin, Peoples R China
Recommended Citation
GB/T 7714
Qu, Wendi,Li, Juanyong,Han, Guangxuan,et al. Effect of salinity on the decomposition of soil organic carbon in a tidal wetland[J]. JOURNAL OF SOILS AND SEDIMENTS,2019,19(2):609-617.
APA Qu, Wendi,Li, Juanyong,Han, Guangxuan,Wu, Haitao,Song, Weimin,&Zhang, Xiaoshuai.(2019).Effect of salinity on the decomposition of soil organic carbon in a tidal wetland.JOURNAL OF SOILS AND SEDIMENTS,19(2),609-617.
MLA Qu, Wendi,et al."Effect of salinity on the decomposition of soil organic carbon in a tidal wetland".JOURNAL OF SOILS AND SEDIMENTS 19.2(2019):609-617.
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