Soil gross nitrogen transformations along the Northeast China Transect (NECT) and their response to simulated rainfall events

doi:10.1038/srep22830

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

	Soil gross nitrogen transformations along the Northeast China Transect (NECT) and their response to simulated rainfall events
	Zhang, Jin-bo ; Wang, Liang ; Zhao, Wei ; Hu, Hui-feng ; Feng, Xiao-juan ; Mueller, Christoph 4,5; Cai, Zu-cong
刊名	SCIENTIFIC REPORTS
	2016
卷号	6
ISSN号	2045-2322
DOI	10.1038/srep22830
文献子类	Article
英文摘要	Climate changes are predicted to increase extreme rainfall events in semiarid and arid region in Northern Hemisphere. Nutrient cycles will be affected by the precipitation changes but so far only very little is known how soil N transformations may respond. Here we investigated gross soil N transformation rates and their response to simulated rainfall events across Northeast China Transect (NECT). The results showed that gross N mineralisation rate, nitrification rate and nitrification to mineralisation ratio significantly increased as the humidity index decreased along NECT, resulting in NO3- as the predominant inorganic N form. These characteristics could increase the risk of NO3- losses but at the same time reduce the risk of N losses via volatilization in the semiarid and arid region. The soil-plant ecosystems have developed effective N conservation strategies in the long term with respect to the prevailing climate in arid region. However, compared to humid soils more dramatic changes of soil N transformation rates are likely to occur in arid soils, after sudden soil moisture increases. Soil N conservation mechanisms in arid regions were drastically affected when the heavy rainfall frequently occurred. Arid ecosystems are expected to be more vulnerable than humid ecosystems in response to extreme rainfall events.
学科主题	Multidisciplinary Sciences
出版地	LONDON
WOS关键词	PRECIPITATION GRADIENT ; FOLIAR DELTA-N-15 ; FOREST ; MINERALIZATION ; PH ; MECHANISMS ; EMISSION ; DYNAMICS ; CARBON
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
语种	英语
出版者	NATURE PUBLISHING GROUP
WOS记录号	WOS:000371466100001
资助机构	973 projectNational Basic Research Program of China [2015CB954201, 2014CB953803] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41330744, 41101236] ; Natural Science Foundation of Jiangsu ProvinceNatural Science Foundation of Jiangsu Province [BK20140062] ; Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD) [164320H116]
内容类型	期刊论文
源URL	[http://ir.ibcas.ac.cn/handle/2S10CLM1/24946]
专题	植被与环境变化国家重点实验室
作者单位	1.Jiangsu Ctr Collaborat Innovat Geog Informat Res, Nanjing 210023, Jiangsu, Peoples R China 2.Nanjing Normal Univ, Sch Geog Sci, Nanjing 210023, Jiangsu, Peoples R China 3.Univ Coll Dublin, Sch Biol & Environm Sci, Dublin 4, Ireland 4.Univ Giessen, Dept Plant Ecol IFZ, Heinrich Buff Ring 26, D-35392 Giessen, Germany 5.Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China 6.Jiangsu Prov Key Lab Mat Cycling & Pollut Control, Nanjing 210023, Jiangsu, Peoples R China 7.Nanjing Normal Univ, Minist Educ, Key Lab Vitual Geog Environm VGE, Nanjing 210023, Jiangsu, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Jin-bo,Wang, Liang,Zhao, Wei,et al. Soil gross nitrogen transformations along the Northeast China Transect (NECT) and their response to simulated rainfall events[J]. SCIENTIFIC REPORTS,2016,6.
APA	Zhang, Jin-bo.,Wang, Liang.,Zhao, Wei.,Hu, Hui-feng.,Feng, Xiao-juan.,...&Cai, Zu-cong.(2016).Soil gross nitrogen transformations along the Northeast China Transect (NECT) and their response to simulated rainfall events.SCIENTIFIC REPORTS,6.
MLA	Zhang, Jin-bo,et al."Soil gross nitrogen transformations along the Northeast China Transect (NECT) and their response to simulated rainfall events".SCIENTIFIC REPORTS 6(2016).