气候变化领域集成服务门户(CCPortal): Partitioning growing season water balance within a forested boreal catchment using sap flux; eddy covariance; and a process-based model

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DOI	10.5194/hess-24-2999-2020
	Partitioning growing season water balance within a forested boreal catchment using sap flux; eddy covariance; and a process-based model
	Kozii N.; Haahti K.; Tor-Ngern P.; Chi J.; Maher Hasselquist E.; Laudon H.; Launiainen S.; Oren R.; Peichl M.; Wallerman J.; Hasselquist N.J.
发表日期	2020
ISSN	1027-5606
起始页码	2999
结束页码	3014
卷号	24 期号:6
英文摘要	Although it is well known that evapotranspiration (ET) represents an important water flux at local to global scales, few studies have quantified the magnitude and relative importance of ET and its individual flux components in high-latitude forests. In this study, we combined empirical sapflux, throughfall, and eddy-covariance measurements with estimates from a process-based model to partition the water balance in a northern boreal forested catchment. This study was conducted within the Krycklan catchment, which has a rich history of hydrological measurements, thereby providing us with the unique opportunity to compare the absolute and relative magnitudes of ET and its flux components to other water balance components. During the growing season, ET represented ca. 85% of the incoming precipitation. Both empirical results and model estimates suggested that tree transpiration (T) and evaporation of intercepted water from the tree canopy (IC) represented 43% and 31% of ET, respectively, and together were equal to ca. 70%of incoming precipitation during the growing season. Understory evapotranspiration (ETu) was less important than T and IC during most of the study period, except for late autumn, when ETu was the largest ET flux component. Overall, our study highlights the importance of trees in regulating the water cycle of boreal catchments, implying that forest management impacts on stand structure as well as climate change effects on tree growth are likely to have large cascading effects on the way water moves through these forested landscapes. © 2020 Cambridge University Press. All rights reserved.
语种	英语
scopus关键词	Catchments; Climate change; Evapotranspiration; Integrated circuits; Runoff; Transpiration; Boreal catchments; Cascading effects; Eddy covariance measurements; Forested catchments; Forested landscapes; Krycklan catchments; Process-based modeling; Water balance components; Forestry; catchment; climate change; eddy covariance; evapotranspiration; growing season; growth; precipitation (climatology); sap flow; tree; water budget
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159381
作者单位	Kozii, N., Department of Forest Ecology and Management, Swedish University of Agricultural Science, Umeä, 90183, Sweden; Haahti, K., Natural Resources Institute Finland (Luke), Latokartanonkaari 9, Helsinki, 00790, Finland; Tor-Ngern, P., Department of Environmental Science, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand, Environment, Health and Social Data Analytics Research Group, Chulalongkorn University, Bangkok, 10330, Thailand; Chi, J., Department of Forest Ecology and Management, Swedish University of Agricultural Science, Umeä, 90183, Sweden; Maher Hasselquist, E., Department of Forest Ecology and Management, Swedish University of Agricultural Science, Umeä, 90183, Sweden; Laudon, H., Department of Forest Ecology and Management, Swedish University of Agricultural Science, Umeä, 90183, Sweden; Launiainen, S., Natural Resources Institute Finland (Luke), Latokartanonkaari 9, Helsinki, 00790, Finland; Oren, R., Nicholas School of the Environment, Duke University, Durham, NC 27...
推荐引用方式 GB/T 7714	Kozii N.,Haahti K.,Tor-Ngern P.,et al. Partitioning growing season water balance within a forested boreal catchment using sap flux; eddy covariance; and a process-based model[J],2020,24(6).
APA	Kozii N..,Haahti K..,Tor-Ngern P..,Chi J..,Maher Hasselquist E..,...&Hasselquist N.J..(2020).Partitioning growing season water balance within a forested boreal catchment using sap flux; eddy covariance; and a process-based model.Hydrology and Earth System Sciences,24(6).
MLA	Kozii N.,et al."Partitioning growing season water balance within a forested boreal catchment using sap flux; eddy covariance; and a process-based model".Hydrology and Earth System Sciences 24.6(2020).