Hot Moments of N2O Emission Under Water and Nitrogen Management in Three Types of Steppe

doi:10.1029/2022JG006877

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

	Hot Moments of N2O Emission Under Water and Nitrogen Management in Three Types of Steppe
	Liu, Wei ; Lu, Xiao-Tao ; Yang, Yong 6; Hou, Longyu ; Shao, Changliang 1,2; Yuan, Wenping 3; Pan, Qingmin ; Li, Linghao
刊名	JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
	2022
卷号	127 期号:8
关键词	greenhouse gas precipitation amounts nitrogen deposition grassland management arid and semi-arid grasslands
ISSN号	2169-8953
DOI	10.1029/2022JG006877
文献子类	Article
英文摘要	Hot moments of soil nitrous oxide (N2O) emission contribute to large fractions of total annual emissions. Magnitudes of N2O emission during hot moments to increasing water and nitrogen (N) availabilities in different steppe types were not well understood. Based on soil monoliths collected from three steppes (meadow, typical, and desert steppes) in northern China, we found that the typical steppe held the lowest N2O emission among the three steppes. Water and N co-addition could increase soil N2O emission by up to 245-fold. Water addition significantly enhanced soil N2O emission in all the three steppes, but the sensitivity of soil N2O emission to water addition decreased from desert steppe (r(2) = 0.83) to typical (r(2) = 0.73) and meadow (r(2) = 0.66) steppes. Nitrogen addition significantly promoted soil N2O emission only in the meadow steppe where soil C:N was relatively higher than the other two steppes. Water and N addition displayed strong positive interaction on soil N2O emission in the meadow steppe while negative interaction in the typical steppe. Different responses of plants, microorganisms and soil NO3- concentration drove the variation in magnitude of soil N2O emission between the two steppes. Our results illustrate different interactions of water and N addition on hot moments of soil N2O emission in the three steppes. We suggest that the pulsed feature of N2O emission should be taken into account in prediction of greenhouse gas emission in the global arid and semiarid grasslands.
学科主题	Environmental Sciences ; Geosciences, Multidisciplinary
电子版国际标准刊号	2169-8961
出版地	WASHINGTON
WOS关键词	TEMPERATE GRASSLANDS PROCESSES ; INNER-MONGOLIA ; ECOSYSTEM RESPIRATION ; NUTRIENT ADDITIONS ; OXIDE ; FLUXES ; CH4 ; PRECIPITATION ; TERRESTRIAL ; PLANT
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	AMER GEOPHYSICAL UNION
WOS记录号	WOS:000842402100001
资助机构	National Natural Science Foundation of China [32001146] ; Key Technology Research Plan of Inner Mongolia Autonomous Region [2020GG0053] ; Liaoning Revitalizing Talents Program [XLYC1807061]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/28927]
专题	植被与环境变化国家重点实验室
作者单位	1.Inner Mongolia Key Lab Remote Sensing Grassland &, Hohhot, Peoples R China 2.Chinese Acad Agr Sci, Natl Hulunber Grassland Ecosyst Observat & Res St, Beijing, Peoples R China 3.Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing, Peoples R China 4.Sun Yat Sen Univ, Ctr Monsoon & Environm Res, Sch Atmospher Sci, Guangzhou, Peoples R China 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China 6.Chinese Acad Sci, Inst Appl Ecol, CAS Key Lab Forest Ecol & Management, Erguna Forest Steppe Ecotone Res Stn, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Liu, Wei,Lu, Xiao-Tao,Yang, Yong,et al. Hot Moments of N2O Emission Under Water and Nitrogen Management in Three Types of Steppe[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2022,127(8).
APA	Liu, Wei.,Lu, Xiao-Tao.,Yang, Yong.,Hou, Longyu.,Shao, Changliang.,...&Li, Linghao.(2022).Hot Moments of N2O Emission Under Water and Nitrogen Management in Three Types of Steppe.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,127(8).
MLA	Liu, Wei,et al."Hot Moments of N2O Emission Under Water and Nitrogen Management in Three Types of Steppe".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 127.8(2022).