气候变化领域集成服务门户(CCPortal): Quantifying the frequency of synchronous carbon and nitrogen export to the river network

CCPortal

DOI	10.1007/s10533-020-00741-z
	Quantifying the frequency of synchronous carbon and nitrogen export to the river network
	Wymore A.S.; Fazekas H.M.; McDowell W.H.
发表日期	2021
ISSN	1682563
卷号	152 期号:1
英文摘要	The biogeochemical cycles of carbon (C) and nitrogen (N) are inextricably linked for a range of reactions. For coupled reactions such as denitrification to occur, however, solutes must be found together in space and time. Using the framework of concentration-discharge (c-Q) relationships, we examine the frequency of synchronous C and N export (i.e. identical c-Q behavior) across a river network using > 5 years of high-frequency sensor data. We demonstrate that across space and time the export of C and N to a river network is asynchronous 57% of the time. The probability of simultaneous export in largely forested watersheds demonstrates little temporal structure, while in more human-impacted watersheds, we observe the highest frequency of asynchronous c-Q behavior. We discuss the implications of synchronous c-Q behavior for solute flux estimation models and develop a theoretical framework for predicting where within a landscape we expect the probability of coupled C and N reactions to be greatest. By simultaneously comparing the variability in C and N c-Q relationships we develop an integrated framework for predicting synchronous export of solutes. © 2021, The Author(s), under exclusive licence to Springer Nature Switzerland AG part of Springer Nature.
英文关键词	Concentration-discharge relationships; Dissolved organic carbon; Fluorescent dissolved organic matter; Nitrate; River networks; Sensors
语种	英语
来源期刊	Biogeochemistry
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/184658
作者单位	Department of Natural Resources and the Environment, University of New Hampshire, Durham, NH 03824, United States; National Center for Ecological Analysis and Synthesis, University of California, Santa Barbara, Santa Barbara, CA 93101, United States
推荐引用方式 GB/T 7714	Wymore A.S.,Fazekas H.M.,McDowell W.H.. Quantifying the frequency of synchronous carbon and nitrogen export to the river network[J],2021,152(1).
APA	Wymore A.S.,Fazekas H.M.,&McDowell W.H..(2021).Quantifying the frequency of synchronous carbon and nitrogen export to the river network.Biogeochemistry,152(1).
MLA	Wymore A.S.,et al."Quantifying the frequency of synchronous carbon and nitrogen export to the river network".Biogeochemistry 152.1(2021).