气候变化领域集成服务门户(CCPortal): Lake Morphometry and River Network Controls on Evasion of Terrestrially Sourced Headwater CO2

CCPortal

DOI	10.1029/2020GL090068
	Lake Morphometry and River Network Controls on Evasion of Terrestrially Sourced Headwater CO2
	Brinkerhoff C.B.; Raymond P.A.; Maavara T.; Ishitsuka Y.; Aho K.S.; Gleason C.J.
发表日期	2021
ISSN	0094-8276
卷号	48 期号:1
英文摘要	Lakes are central components of the inland water system distinct from, yet inextricably connected to, river networks. Currently, existing network-scale biogeochemistry research, although robust, typically treats each of these components separately or reductively. Here, we incorporate lake morphometry into a fully connected stream/lake network for the Connecticut River watershed and model potential evasion of terrestrially sourced headwater CO2 as transported through the network, ignoring in-stream production. We found that approximately 25%–30% of total potential soil CO2 evasion occurs in lakes, and percent evasion is inversely related to streamflow. A lake's ability to evade CO2 is controlled by residence time and size: most lakes with residence time over 7 days or surface area greater than 0.004 km2 evade functionally all terrestrial CO2 entering from upstream, precluding further downstream transport. We conclude that lakes are important for soil CO2 degassing and that this coupled river/lake approach is promising for CO2 studies henceforth. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Carbon dioxide; Lakes; Central component; Inland waters; Lake morphometry; Model potential; Network scale; Residence time; River network; River watersheds; Rivers
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169233
作者单位	Department of Civil and Environmental Engineering, University of Massachusetts, Amherst, MA, United States; School of the Environment, Yale University, New Haven, CT, United States
推荐引用方式 GB/T 7714	Brinkerhoff C.B.,Raymond P.A.,Maavara T.,et al. Lake Morphometry and River Network Controls on Evasion of Terrestrially Sourced Headwater CO2[J],2021,48(1).
APA	Brinkerhoff C.B.,Raymond P.A.,Maavara T.,Ishitsuka Y.,Aho K.S.,&Gleason C.J..(2021).Lake Morphometry and River Network Controls on Evasion of Terrestrially Sourced Headwater CO2.Geophysical Research Letters,48(1).
MLA	Brinkerhoff C.B.,et al."Lake Morphometry and River Network Controls on Evasion of Terrestrially Sourced Headwater CO2".Geophysical Research Letters 48.1(2021).