Short-term effects of soil moisture on soil organic carbon decomposition in a coastal wetland of the Yellow River Delta

doi:10.1007/s10750-020-04422-8

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 > 近岸生态与环境实验室

	Short-term effects of soil moisture on soil organic carbon decomposition in a coastal wetland of the Yellow River Delta
	Qu, Wendi 1,2,3; Han, Guangxuan 2,3; Wang, Jian 4; Li, Juanyong 1,2,3; Zhao, Mingliang 2; He, Wenjun 1,2,3; Li, Xinge 2; Wei, Siyu 2
刊名	HYDROBIOLOGIA
	2020-09-30
页码	13
关键词	Soil moisture Soil organic carbon decomposition CO2 CH4 Coastal wetland
ISSN号	0018-8158
DOI	10.1007/s10750-020-04422-8
通讯作者	Han, Guangxuan(gxhan@yic.ac.cn)
英文摘要	Soil moisture remarkably influences soil organic carbon (SOC) decomposition and is one of the key variables in ecological models influencing changes in soil carbon (C) storage. However, the mechanisms determining the impact of soil moisture on SOC decomposition in coastal wetlands are poorly understood. We collected and incubated soil samples from a coastal wetland of the Yellow River Delta, China, to investigate the response of SOC decomposition (the sum of CO2-C and CH4-C) to soil moisture. Soil samples were incubated at 20%, 60%, 100%, 140% and 180% water holding capacity (WHC), respectively. Compared to drought condition (20% WHC), moist (60% and 100% WHC) and flooding (140% and 180% WHC) conditions were observed with significantly higher SOC decomposition, explained by increased soil microbial biomass and altered soil physical parameters (pH and electronic conductivity (EC)). Excluding the effect of drought, we found decreased SOC decomposition with increased microbial biomass in flooding conditions compared to moist conditions. Structural equation modeling analysis showed that SOC decomposition and soil C storage were associated with changes in soil environment and soil microbial biomass resulted from soil moisture variation. This study highlights the importance of soil moisture in soil carbon dynamics, which is enlightening for the evaluation of soil C cycling with a decline of soil moisture under a warmer climate in coastal wetlands.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDA23050202] ; National Natural Science Foundation of China[41671089] ; Forestry Science and Technology Innovation Project of Shandong Province[2019LY006] ; Yellow River Delta Ecological Research Station of Coastal Wetland, CAS
WOS关键词	MICROBIAL ACTIVITY ; RESPIRATION ; TEMPERATURE ; PRECIPITATION ; RESPONSES ; SALINITY ; EXCHANGE ; BALANCE ; MINERALIZATION ; AVAILABILITY
WOS研究方向	Marine & Freshwater Biology
语种	英语
WOS记录号	WOS:000574071100001
资助机构	Strategic Priority Research Program of the Chinese Academy of Sciences ; National Natural Science Foundation of China ; Forestry Science and Technology Innovation Project of Shandong Province ; Yellow River Delta Ecological Research Station of Coastal Wetland, CAS
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/28499]
专题	烟台海岸带研究所_近岸生态与环境实验室烟台海岸带研究所_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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Shandong Key Lab Coastal Environm Proc,YICCAs, Yantai 264003, Shandong, Peoples R China 3.Chinese Acad Sci, Ctr Ocean Mega Sci, 7 Nanhai Rd, Qingdao 266071, Peoples R China 4.Ohio State Univ, Dept Geog, Columbus, OH 43210 USA
推荐引用方式 GB/T 7714	Qu, Wendi,Han, Guangxuan,Wang, Jian,et al. Short-term effects of soil moisture on soil organic carbon decomposition in a coastal wetland of the Yellow River Delta[J]. HYDROBIOLOGIA,2020:13.
APA	Qu, Wendi.,Han, Guangxuan.,Wang, Jian.,Li, Juanyong.,Zhao, Mingliang.,...&Wei, Siyu.(2020).Short-term effects of soil moisture on soil organic carbon decomposition in a coastal wetland of the Yellow River Delta.HYDROBIOLOGIA,13.
MLA	Qu, Wendi,et al."Short-term effects of soil moisture on soil organic carbon decomposition in a coastal wetland of the Yellow River Delta".HYDROBIOLOGIA (2020):13.