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

doi:10.1016/j.geoderma.2020.114426

IEECAS OpenIR > 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.1,3,4; Ren, C. J.5; Feng, X. X.1,3,4; Zhang, L.3; Doughty, R.6; Zhao, F. Z.1,2,3,4
通讯作者	Zhao, F. Z.(zhaofazhu@nwu.edu.cn)
	2020-09-01
发表期刊	GEODERMA
ISSN	0016-7061
卷号	374 页码:9
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.
关键词	Carbon pools Soil enzyme activities Soil microbial Soil respiration Afforestation
DOI	10.1016/j.geoderma.2020.114426
关键词[WOS]	ORGANIC-CARBON ; BACTERIAL COMMUNITY ; MICROBIAL CARBON ; SECONDARY SUCCESSION ; NITROGEN DEPOSITION ; USE EFFICIENCY ; LOESS PLATEAU ; RESPIRATION ; STOICHIOMETRY ; FOREST
收录类别	SCI ; SCI
语种	英语
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研究方向	Agriculture
项目资助者	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
WOS类目	Soil Science
WOS记录号	WOS:000540257900021
出版者	ELSEVIER
引用统计	被引频次：22[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ieecas.cn/handle/361006/14903
专题	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, Shaanxi Key Lab Earth Surface Syst & Environm Car, Xian 710127, Shaanxi, Peoples R China 2.Chinese Acad Sci, State Key Lab Loess & Quaternary Geol, Inst Earth Environm, Beijing, Peoples R China 3.Minist Land & Resources China, Key Lab Degraded & Unused Land Consolidat Engn, Xian 710075, Shaanxi, Peoples R China 4.Northwest Univ Xian, Coll Urban & Environm Sci, Xian 710127, Shaanxi, Peoples R China 5.Northwest A&F Univ, Coll Agron, Yangling 712100, Shaanxi, Peoples R China 6.Univ Oklahoma, Ctr Spatial Anal, Dept Microbiol & Plant Biol, Norman, OK 73019 USA
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.