Seven-year experimental warming decreases labile but not recalcitrant soil organic carbon fractions in a coastal wetland
Sun, Ruifeng1,2,3,6; Sun, Baoyu2,4; Li, Xinge1,2,3,6; Wei, Siyu1,2,3,6; Zhao, Mingliang1,2,6; Chu, Xiaojing1,2,6; Song, Weimin1,2,6; Yuan, Junji5; Han, Guangxuan1,2,6
Source PublicationJOURNAL OF SOILS AND SEDIMENTS
ISSN1439-0108
2023-05-19
Pages11
KeywordExperimental warming Coastal wetlands Soil organic carbon fractions Temperature sensitivity
DOI10.1007/s11368-023-03536-5
Corresponding AuthorHan, Guangxuan(gxhan@yic.ac.cn)
AbstractPurposeThe response of soil organic carbon (SOC) fractions to climate warming plays an important role in influencing the fate of soil C stocks. Coastal wetlands have high C sequestration; however, complex water and salt stress conditions lead to a large uncertainty in the effects of warming on SOC dynamics. Further, numerous short-term warming studies cannot provide an unbiased estimate of the warming impacts and mechanisms.MethodsIn our study, the topsoil (0-10 cm) and subsoil (20-40 cm) were collected to assess the changes in SOC dynamics after seven-year experiment warming in a coastal wetland in the Yellow River Delta. Additionally, we conducted a short-term dynamic temperature ramping incubation experiment to evaluate the SOC decomposition rate and its temperature sensitivity.ResultsWarming significantly decreased the SOC content by 38.7% in the topsoil but had no effect in the subsoil. Warming significantly decreased the labile SOC fractions, including dissolved organic C (DOC) and particulate organic C (POC) in the topsoil but not in the subsoil. By contrast, warming did not alter the recalcitrant mineral-associated organic C (MAOC) fraction in both topsoil and subsoil. Warming-induced elevated soil salinity caused a decrease in labile SOC fractions, presumably through weakening the quantity of plant inputs. In addition, warming significantly increased the SOC mineralization rate in the topsoil, but did not change its temperature sensitivity in both the topsoil and subsoil.ConclusionsOverall, our findings highlight the importance of considering the varying responses of labile and recalcitrant SOC fractions to warming, which would aid in obtaining more accurate projections of SOC dynamics in coastal wetlands under future climate change.
Funding OrganizationNatural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; International Science Partnership Program of the Chinese Academy of Sciences ; Yellow River Delta Ecological Research Station of Coastal Wetland ; Chinese Academy of Sciences
Indexed BySCI
Language英语
WOS KeywordMICROBIAL COMMUNITIES ; AGGREGATE STABILITY ; MATTER ; RESPONSES ; SALINITY ; POOLS ; FOREST ; INPUTS ; DECOMPOSITION ; EFFICIENCY
WOS Research AreaEnvironmental Sciences & Ecology ; Agriculture
WOS IDWOS:000990976200001
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.yic.ac.cn/handle/133337/32948
Collection中国科学院海岸带环境过程与生态修复重点实验室
中国科学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
支撑部门_中国科学院黄河三角洲滨海湿地试验站
Corresponding AuthorHan, Guangxuan
Affiliation1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Shandong, Peoples R China
2.Chinese Acad Sci, Res Stn Coastal Wetland Ecosyst, Yellow River Delta Field Observat, Dongying 257500, Shandong, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.Fudan Univ, Sch Life Sci, Key Lab Biodivers Sci & Ecol Engn, Minist Educ, Shanghai 200433, Peoples R China
5.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China
6.Shandong Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China
Recommended Citation
GB/T 7714
Sun, Ruifeng,Sun, Baoyu,Li, Xinge,et al. Seven-year experimental warming decreases labile but not recalcitrant soil organic carbon fractions in a coastal wetland[J]. JOURNAL OF SOILS AND SEDIMENTS,2023:11.
APA Sun, Ruifeng.,Sun, Baoyu.,Li, Xinge.,Wei, Siyu.,Zhao, Mingliang.,...&Han, Guangxuan.(2023).Seven-year experimental warming decreases labile but not recalcitrant soil organic carbon fractions in a coastal wetland.JOURNAL OF SOILS AND SEDIMENTS,11.
MLA Sun, Ruifeng,et al."Seven-year experimental warming decreases labile but not recalcitrant soil organic carbon fractions in a coastal wetland".JOURNAL OF SOILS AND SEDIMENTS (2023):11.
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