Temperature sensitivity of soil carbon decomposition due to shifts in soil extracellular enzymes after afforestation

doi:10.1016/j.geoderma.2020.114426

CORC > 地球环境研究所 > 中国科学院地球环境研究所 > 黄土与第四纪地质国家重点实验室（2010~）

	Temperature sensitivity of soil carbon decomposition due to shifts in soil extracellular enzymes after afforestation
	Wang, J. Y.1,3,6; Ren, C. J.5; Feng, X. X.1,3,6; Zhang, L.6; Doughty, R.4; Zhao, F. Z.1,2,3,6
刊名	GEODERMA
	2020-09-01
卷号	374 页码:9
关键词	Carbon pools Soil enzyme activities Soil microbial Soil respiration Afforestation
ISSN号	0016-7061
DOI	10.1016/j.geoderma.2020.114426
通讯作者	Zhao, F. Z.(zhaofazhu@nwu.edu.cn)
英文摘要	Afforestation of arable land has been proposed as one of the most effective strategies for climate change mitigation. However, the effects of afforestation on soil CO2 emissions have not been well investigated due to a lack of information on the capacity of carbon pools to sequester CO2 over the long term. In this study, we conducted a 414-day incubation experiment to monitor changes in CO2 emission, soil extracellular enzymes, and microbial biomass at soils collected from a site afforested with R. pseudoacacia L and an adjacent cropland system under 15 degrees C and 25 degrees C constant temperatures. The study was to reveal how soil organic carbon decomposed under different temperatures during incubation along an afforestation gradient. Our results showed that: 1) after warming, active pool respiration increased from 0.64% to 12.57%, passive pool respiration increased from 20.62% to 46.77%, and slow pool respiration decreased from 21.27% to 59.35% for cropland to afforested land; 2) active and slow carbon pool increased in young and middle-aged afforested lands while the passive carbon pool increased in the late stage; and 3) microbial biomass and enzyme activities affected the respiration rate and the fraction of respiration during warming, especially enzyme affected active and slow pools. Our findings indicate that the temperature sensitivity of soil organic carbon decomposition changed mainly due to shifts of soil extracellular enzymes after afforestation, and provides insight into how SOC decomposition in afforested ecosystems may respond to future changes in climate.
资助项目	National Natural Science Foundation of China[41601578] ; National Natural Science Foundation of China[41907031] ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment[SKLLQG1940] ; Foundation of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021402-1811] ; Foundation of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau[A314021402-1915] ; China Postdoctoral Science Foundation[2018T111089] ; Special Research Project of Education Department of Shaanxi Provincial Government[18JK0784] ; Key laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Land and Resources[SXDJ2018-02]
WOS关键词	ORGANIC-CARBON ; BACTERIAL COMMUNITY ; MICROBIAL CARBON ; SECONDARY SUCCESSION ; NITROGEN DEPOSITION ; USE EFFICIENCY ; LOESS PLATEAU ; RESPIRATION ; STOICHIOMETRY ; FOREST
WOS研究方向	Agriculture
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000540257900021
资助机构	National Natural Science Foundation of China ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment ; Foundation of State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau ; China Postdoctoral Science Foundation ; Special Research Project of Education Department of Shaanxi Provincial Government ; Key laboratory of Degraded and Unused Land Consolidation Engineering, the Ministry of Land and Resources
内容类型	期刊论文
源URL	[http://ir.ieecas.cn/handle/361006/14902]
专题	地球环境研究所_黄土与第四纪地质国家重点实验室（2010~）
通讯作者	Zhao, F. Z.
作者单位	1.Northwest Univ Xian, Coll Urban & Environm Sci, Xian 710127, Shaanxi, Peoples R China 2.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Beijing, Peoples R China 3.Northwest Univ Xian, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian 710127, Shaanxi, Peoples R China 4.Univ Oklahoma, Ctr Spatial Anal, Dept Microbiol & Plant Biol, Norman, OK 73019 USA 5.Northwest A&F Univ, Coll Agron, Yangling 712100, Shaanxi, Peoples R China 6.Minist Land & Resources China, Key Lab Degraded & Unused Land Consolidat Engn, Xian 710075, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Wang, J. Y.,Ren, C. J.,Feng, X. X.,et al. Temperature sensitivity of soil carbon decomposition due to shifts in soil extracellular enzymes after afforestation[J]. GEODERMA,2020,374:9.
APA	Wang, J. Y.,Ren, C. J.,Feng, X. X.,Zhang, L.,Doughty, R.,&Zhao, F. Z..(2020).Temperature sensitivity of soil carbon decomposition due to shifts in soil extracellular enzymes after afforestation.GEODERMA,374,9.
MLA	Wang, J. Y.,et al."Temperature sensitivity of soil carbon decomposition due to shifts in soil extracellular enzymes after afforestation".GEODERMA 374(2020):9.