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

doi:10.1007/s11368-023-03536-5

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	Seven-year experimental warming decreases labile but not recalcitrant soil organic carbon fractions in a coastal wetland
	Sun, Ruifeng 1,4,5,6; Sun, Baoyu 3,5; Li, Xinge 1,4,5,6; Wei, Siyu 1,4,5,6; Zhao, Mingliang 1,5,6; Chu, Xiaojing 1,5,6; Song, Weimin 1,5,6; Yuan, Junji 2; Han, Guangxuan 1,5,6
刊名	JOURNAL OF SOILS AND SEDIMENTS
	2023-05-19
页码	11
关键词	Experimental warming Coastal wetlands Soil organic carbon fractions Temperature sensitivity
ISSN号	1439-0108
DOI	10.1007/s11368-023-03536-5
通讯作者	Han, Guangxuan(gxhan@yic.ac.cn)
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.
WOS关键词	MICROBIAL COMMUNITIES ; AGGREGATE STABILITY ; MATTER ; RESPONSES ; SALINITY ; POOLS ; FOREST ; INPUTS ; DECOMPOSITION ; EFFICIENCY
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
语种	英语
WOS记录号	WOS:000990976200001
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
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/32947]
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	Han, Guangxuan
作者单位	1.Shandong Key Lab Coastal Environm Proc, Yantai 264003, Shandong, Peoples R China 2.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 3.Fudan Univ, Sch Life Sci, Key Lab Biodivers Sci & Ecol Engn, Minist Educ, Shanghai 200433, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Res Stn Coastal Wetland Ecosyst, Yellow River Delta Field Observat, Dongying 257500, Shandong, Peoples R China 6.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, 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.