气候变化领域集成服务门户(CCPortal): Global patterns and substrate-based mechanisms of the terrestrial nitrogen cycle

CCPortal

DOI	10.1111/ele.12591
	Global patterns and substrate-based mechanisms of the terrestrial nitrogen cycle
	Niu S.; Classen A.T.; Dukes J.S.; Kardol P.; Liu L.; Luo Y.; Rustad L.; Sun J.; Tang J.; Templer P.H.; Thomas R.Q.; Tian D.; Vicca S.; Wang Y.-P.; Xia J.; Zaehle S.
发表日期	2016
ISSN	1461-023X
EISSN	1461-0248
卷号	19 期号:6
英文摘要	Nitrogen (N) deposition is impacting the services that ecosystems provide to humanity. However, the mechanisms determining impacts on the N cycle are not fully understood. To explore the mechanistic underpinnings of N impacts on N cycle processes, we reviewed and synthesised recent progress in ecosystem N research through empirical studies, conceptual analysis and model simulations. Experimental and observational studies have revealed that the stimulation of plant N uptake and soil retention generally diminishes as N loading increases, while dissolved and gaseous losses of N occur at low N availability but increase exponentially and become the dominant fate of N at high loading rates. The original N saturation hypothesis emphasises sequential N saturation from plant uptake to soil retention before N losses occur. However, biogeochemical models that simulate simultaneous competition for soil N substrates by multiple processes match the observed patterns of N losses better than models based on sequential competition. To enable better prediction of terrestrial N cycle responses to N loading, we recommend that future research identifies the response functions of different N processes to substrate availability using manipulative experiments, and incorporates the measured N saturation response functions into conceptual, theoretical and quantitative analyses. Copyright © 2016 John Wiley & Sons Ltd/CNRS.
英文关键词	Leaching; Mineralisation; Nitrification; Nitrogen deposition; Nitrogen loss; Plant N uptake; Saturation; Soil N retention; Threshold
学科领域	atmospheric deposition; ecosystem function; functional response; global change; leaching; mineralization; nitrification; nitrogen cycle; nutrient loss; nutrient uptake; plant; soil nitrogen; substrate; threshold; nitrogen; soil; chemistry; ecosystem; metabolism; microbiology; nitrogen cycle; plant; plant physiology; soil; theoretical model; Ecosystem; Models, Theoretical; Nitrogen; Nitrogen Cycle; Plant Physiological Phenomena; Plants; Soil; Soil Microbiology
语种	英语
scopus关键词	atmospheric deposition; ecosystem function; functional response; global change; leaching; mineralization; nitrification; nitrogen cycle; nutrient loss; nutrient uptake; plant; soil nitrogen; substrate; threshold; nitrogen; soil; chemistry; ecosystem; metabolism; microbiology; nitrogen cycle; plant; plant physiology; soil; theoretical model; Ecosystem; Models, Theoretical; Nitrogen; Nitrogen Cycle; Plant Physiological Phenomena; Plants; Soil; Soil Microbiology
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/118548
作者单位	Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China; The Natural History Museum of Denmark, University of Copenhagen, Universitetsparken 15, København Ø, 2100, Denmark; Department of Forestry and Natural Resources, Department of Biological Sciences, Purdue Climate Change Research Center, Purdue University, West Lafayette, IN, United States; Department of Forest Ecology and Management, Swedish University of Agricultural Sciences, Umeå, S 90-183, Sweden; State Key Laboratory of Vegetation and Environment Change, Institute of Botany, Chinese Academy of Sciences, Beijing, China; Department of Microbiology and Plant Biology, University of Oklahoma, Norman, OK, United States; U.S. Forest Service, Northern Research Station, Durham, NH, United States; The Ecosystem Center, Marine Biological Laboratory, Woods Hole, MA, United States; Department of Biology, Boston University, Boston, MA, United Sta...
推荐引用方式 GB/T 7714	Niu S.,Classen A.T.,Dukes J.S.,et al. Global patterns and substrate-based mechanisms of the terrestrial nitrogen cycle[J],2016,19(6).
APA	Niu S..,Classen A.T..,Dukes J.S..,Kardol P..,Liu L..,...&Zaehle S..(2016).Global patterns and substrate-based mechanisms of the terrestrial nitrogen cycle.Ecology Letters,19(6).
MLA	Niu S.,et al."Global patterns and substrate-based mechanisms of the terrestrial nitrogen cycle".Ecology Letters 19.6(2016).