干旱区生态环境知识资源中心(Arid): A review of measurements of air-surface exchange of reactive nitrogen in natural ecosystems across North America

Arid

DOI	10.1016/j.scitotenv.2019.133975
	A review of measurements of air-surface exchange of reactive nitrogen in natural ecosystems across North America
	Walker, John T.1; Beachley, Gregory 2; Zhang, Leiming 3; Benedict, Katherine B.4; Sive, Barkley C.5; Schwede, Donna B.1
通讯作者	Walker, John T.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2020
卷号	698
英文摘要	This review summarizes the state of the science of measurements of dry deposition of reactive nitrogen (Nr) compounds in North America, beginning with current understanding of the importance of dry deposition at the U.S. continental scale followed by a review of micrometeorological flux measurement methods. Measurements of Nr air-surface exchange in natural ecosystems of North America are then summarized, focusing on the U.S. and Canada. Drawing on this synthesis, research needed to address the incompleteness of dry deposition budgets, more fully characterize temporal and geographical variability of fluxes, and better understand airsurface exchange processes is identified. Our assessment points to several data and knowledge gaps that must be addressed to advance dry deposition budgets and air-surface exchange modeling for North American ecosystems. For example, recent studies of particulate (NO3-) and gaseous (NOx, HONG, peroxy nitrates) oxidized N fluxes challenge the fundamental framework of unidirectional flux from the atmosphere to the surface employed in most deposition models. Measurements in forest ecosystems document the importance of in-canopy chemical processes in regulating the net flux between the atmosphere and biosphere, which can result in net loss from the canopy. emphasize the need for studies to quantify within- and near-canopy sources and sinks of the full suite of components of the Nr chemical system under study (e.g., NOy or HNO3-NH3-NH4NO3). With respect to specific ecosystems and geographical locations, additional flux measurements are needed particularly in agricultural regions (NH3), coastal zones (NO3 and organic N), and arid ecosystems and along urban to rural gradients (NO2). Measurements that investigate non-stomatal exchange processes (e.g., deposition to wet surfaces) and the biogeochemical drivers of bidirectional exchange (e.g, NH3) are considered high priority. Establishment of long-term sites for process level measurements of reactive chemical fluxes should be viewed as a high priority long-term endeavor of the atmospheric chemistry and ecological communities. Published by Elsevier B.V.
类型	Review
语种	英语
国家	USA ; Canada
开放获取类型	Green Accepted
收录类别	SCI-E
WOS记录号	WOS:000500580700006
WOS关键词	DRY DEPOSITION VELOCITY ; CONCENTRATION GRADIENT MEASUREMENTS ; BIDIRECTIONAL AMMONIA EXCHANGE ; IONIZATION MASS-SPECTROMETER ; EDDY COVARIANCE MEASUREMENTS ; TEMPERATE DECIDUOUS FOREST ; GAS-PARTICLE INTERACTIONS ; NITRIC-ACID VAPOR ; ATMOSPHERIC AMMONIA ; FLUX MEASUREMENTS
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2020-01-01
来源机构	Colorado State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312322
作者单位	1.US EPA, Off Res & Dev, Durham, NC 27709 USA; 2.US EPA, Off Air & Radiat, Washington, DC 20460 USA; 3.Environm & Climate Change Canada, Toronto, ON, Canada; 4.Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA; 5.Natl Pk Serv, Air Resources Div, Lakewood, CO USA
推荐引用方式 GB/T 7714	Walker, John T.,Beachley, Gregory,Zhang, Leiming,et al. A review of measurements of air-surface exchange of reactive nitrogen in natural ecosystems across North America[J]. Colorado State University,2020,698.
APA	Walker, John T.,Beachley, Gregory,Zhang, Leiming,Benedict, Katherine B.,Sive, Barkley C.,&Schwede, Donna B..(2020).A review of measurements of air-surface exchange of reactive nitrogen in natural ecosystems across North America.SCIENCE OF THE TOTAL ENVIRONMENT,698.
MLA	Walker, John T.,et al."A review of measurements of air-surface exchange of reactive nitrogen in natural ecosystems across North America".SCIENCE OF THE TOTAL ENVIRONMENT 698(2020).