Long-term nitrogen enrichment accelerates soil respiration by boosting microbial biomass in coastal wetlands

doi:10.1016/j.soilbio.2022.108864

	Long-term nitrogen enrichment accelerates soil respiration by boosting microbial biomass in coastal wetlands
	Qu, Wendi 1,2; Xie, Baohua2,3 ; Hua, Hao 1,2; Bohrer, Gil 4; Penuelas, Josep 5,6; Wu, Chaoyang 1,2; Han, Guangxuan2,3
发表期刊	SOIL BIOLOGY & BIOCHEMISTRY
ISSN	0038-0717
	2022-12-01
卷号	175 页码:7
关键词	Nitrogen enrichment Coastal wetlands Soil respiration Microbial biomass carbon Temperature sensitivity
DOI	10.1016/j.soilbio.2022.108864
通讯作者	Wu, Chaoyang(wucy@igsnrr.ac.cn) ; Han, Guangxuan(gxhan@yic.ac.cn)
英文摘要	Coastal wetlands are essential in terrestrial carbon balance because they act as natural "blue carbon" sinks, influenced by anthropogenic nitrogen (N) enrichment. N enrichment alters soil environment and plant growth, impacting carbon loss through soil respiration (Rsoil). However, the responses of Rsoil to N enrichment remain elusive in coastal wetlands, hindering the estimation of carbon fluxes. To bridge this knowledge gap, we used an 8-year field N fertilization platform in the coastal wetlands of the Yellow River Delta, China, to measure Rsoil composed of heterotrophic respiration and autotrophic respiration, and multiple indicators of soil properties, microbial activities, and plant growth. We found long-term N enrichment increased Rsoil by 26.6 +/- 1.2% (mean +/- standard deviation) and quadrupled microbial biomass carbon, accounting for 26.9 +/- 1.2% of the increase in heterotrophic respiration. In addition, N enrichment boosted plant growth, increasing the above-ground biomass by 28.7 +/- 6.9% while inducing a cooling effect that partly offsets the increase in autotrophic respiration. In particular, N enrichment elevated soil temperature sensitivity of Rsoil with the increase of N levels, suggesting that the nutrient-related control of Rsoil responds to warming. The study indicates that N enrichment stimulates Rsoil in coastal wetlands by boosting microbial biomass carbon through interactions between soil environmental conditions and plant growth. These results have implications for predicting the carbon cycle with anthropogenic N enrichment.
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
收录类别	SCI
语种	英语
关键词[WOS]	TROPICAL FOREST ; DEPOSITION ; CARBON ; COMMUNITY ; ADDITIONS ; GROWTH
研究领域[WOS]	Agriculture
WOS记录号	WOS:000884832900001
引用统计	被引频次：4[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.yic.ac.cn/handle/133337/32402
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
通讯作者	Wu, Chaoyang; Han, Guangxuan
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Zone Environm Proc & Ecol Remediat, Yantai 264000, Peoples R China 4.Ohio State Univ, Dept Civil Environm & Geodet Engn, Columbus, OH USA 5.Ctr Recerca Ecol & Aplicac Forestals, CREAF, Barcelona 08193, Catalonia, Spain 6.UAB, CSIC, CREAF, Global Ecol Unit, Barcelona 08193, Catalonia, Spain
推荐引用方式 GB/T 7714	Qu, Wendi,Xie, Baohua,Hua, Hao,et al. Long-term nitrogen enrichment accelerates soil respiration by boosting microbial biomass in coastal wetlands[J]. SOIL BIOLOGY & BIOCHEMISTRY,2022,175:7.
APA	Qu, Wendi.,Xie, Baohua.,Hua, Hao.,Bohrer, Gil.,Penuelas, Josep.,...&Han, Guangxuan.(2022).Long-term nitrogen enrichment accelerates soil respiration by boosting microbial biomass in coastal wetlands.SOIL BIOLOGY & BIOCHEMISTRY,175,7.
MLA	Qu, Wendi,et al."Long-term nitrogen enrichment accelerates soil respiration by boosting microbial biomass in coastal wetlands".SOIL BIOLOGY & BIOCHEMISTRY 175(2022):7.