Seven-year experimental warming decreases labile but not recalcitrant soil organic carbon fractions in a coastal wetland

doi:10.1007/s11368-023-03536-5

	Seven-year experimental warming decreases labile but not recalcitrant soil organic carbon fractions in a coastal wetland
	Sun, Ruifeng 1,2,3,6; Sun, Baoyu 2,4; Li, Xinge 1,2,3,6; Wei, Siyu 1,2,3,6; Zhao, Mingliang 1,2,6; Chu, Xiaojing 1,2,6; Song, Weimin 1,2,6; Yuan, Junji 5; Han, Guangxuan1,2,6
发表期刊	JOURNAL OF SOILS AND SEDIMENTS
ISSN	1439-0108
	2023-05-19
页码	11
关键词	Experimental warming Coastal wetlands Soil organic carbon fractions Temperature sensitivity
DOI	10.1007/s11368-023-03536-5
通讯作者	Han, Guangxuan([email protected])
英文摘要	PurposeThe 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.
资助机构	Natural 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
收录类别	SCI
语种	英语
关键词[WOS]	MICROBIAL COMMUNITIES ; AGGREGATE STABILITY ; MATTER ; RESPONSES ; SALINITY ; POOLS ; FOREST ; INPUTS ; DECOMPOSITION ; EFFICIENCY
研究领域[WOS]	Environmental Sciences & Ecology ; Agriculture
WOS记录号	WOS:000990976200001
引用统计
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/36939
专题	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
通讯作者	Han, Guangxuan
作者单位	1.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
推荐引用方式 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.