Response of ecosystem CO2 fluxes to grazing intensities - a five-year experiment in the Hulunber meadow steppe of China

doi:10.1111/1365-2435.12722

CORC > 植物研究所 > 中国科学院植物研究所 > 植被与环境变化国家重点实验室

	Response of ecosystem CO2 fluxes to grazing intensities - a five-year experiment in the Hulunber meadow steppe of China
	Yan, R. R.; Tang, H. J.; Lv, S. H.; Jin, D. Y.; Xin, X. P.; Chen, B. R.; Zhang, B. H.; Yan, Y. C.; Wang, X.; Murray, Philip J.
刊名	SCIENTIFIC REPORTS
	2017
卷号	7
ISSN号	2045-2322
DOI	10.1111/1365-2435.12722
文献子类	Article
英文摘要	Grazing is the primary land use in the Hulunber meadow steppe. However, the quantitative effects of grazing on ecosystem carbon dioxide (CO2) fluxes in this zone remain unclear. A controlled experiment was conducted from 2010 to 2014 to study the effects of six stocking rates on CO2 flux, and the results showed that there were significant differences in CO2 fluxes by year, treatment, and month. The effects of light and intermediate grazing remained relatively constant with grazing year, whereas the effects of heavy grazing increased substantially with grazing duration. CO2 flux significantly decreased with increasing grazing intensity and duration, and it was significantly positively correlated with rainfall, soil moisture (SM), the carbon to nitrogen ratio (C/N ratio), soil available phosphorus (SAP), soil NH4+-N, soil NO3-N, aboveground biomass (AGB), coverage, height, and litter and negatively correlated with air temperature, total soil N (TN) and microbial biomass N (MBN). A correspondence analysis showed that the main factors influencing changes in CO2 emissions under grazing were AGB, height, coverage, SM, NH4+-N and NO3- N. Increased rainfall and reduced grazing resulted in greater CO2 emissions. Our study provides important information to improve our understanding of the role of livestock grazing in GHG emissions.
学科主题	Environmental Sciences & Ecology
出版地	LONDON
WOS关键词	CARBON-DIOXIDE FLUXES ; SOIL-WATER CONTENT ; INTERANNUAL VARIABILITY ; INNER-MONGOLIA ; LAND-USE ; NITROGEN-FERTILIZATION ; TEMPERATE GRASSLAND ; ALPINE MEADOW ; RESPIRATION ; EXCHANGE
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000394374100019
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41201199, 41471093] ; Major State Research Development Program of China [2016YFC0500601] ; National High-Tech Research and Development Projects (863) [2012AA102003-4] ; Public Sector Projects in the Ministry of Agriculture [201303060] ; Fundamental Research Funds for Central Non-profit Scientific Institution [402-11, 1610132016033] ; Chinese Ministry of AgricultureMinistry of Agriculture, China [CARS-35-11]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/22314]
专题	植被与环境变化国家重点实验室
作者单位	1.Chen, B. R. 2.Jin, D. Y. 3.Zhang, B. H. 4.Yan, Y. C. 5.[Yan, R. R. 6.Yang, G. X. 7.Tang, H. J. 8.Wang, X. 9.Xu, L. J.] Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China 10.[Lv, S. H.] Inner Mongolia Agr Univ, Coll Sci, Hohhot 010018, Inner Mongolia, Peoples R China
推荐引用方式 GB/T 7714	Yan, R. R.,Tang, H. J.,Lv, S. H.,et al. Response of ecosystem CO2 fluxes to grazing intensities - a five-year experiment in the Hulunber meadow steppe of China[J]. SCIENTIFIC REPORTS,2017,7.
APA	Yan, R. R..,Tang, H. J..,Lv, S. H..,Jin, D. Y..,Xin, X. P..,...&Zhao, S..(2017).Response of ecosystem CO2 fluxes to grazing intensities - a five-year experiment in the Hulunber meadow steppe of China.SCIENTIFIC REPORTS,7.
MLA	Yan, R. R.,et al."Response of ecosystem CO2 fluxes to grazing intensities - a five-year experiment in the Hulunber meadow steppe of China".SCIENTIFIC REPORTS 7(2017).