气候变化领域集成服务门户(CCPortal): Contribution of understory evaporation in a tropical wet forest during the dry season

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DOI	10.5194/hess-24-2179-2020
	Contribution of understory evaporation in a tropical wet forest during the dry season
	Jiménez-Rodríguez C.D.; Coenders-Gerrits M.; Wenninger J.; Gonzalez-Angarita A.; Savenije H.
发表日期	2020
ISSN	1027-5606
起始页码	2179
结束页码	2206
卷号	24 期号:4
英文摘要	Tropical wet forests are complex ecosystems with a large number of plant species. These environments are characterized by a high water availability throughout the whole year and a complex canopy structure. However, how the different sections of the canopy contribute to total evaporation is poorly understood. The aim of this work is to estimate the total evaporation flux and differentiate the contribution among canopy layers of a tropical wet forest in Costa Rica. The fluxes were monitored during the dry season by making use of the energy balance to quantify the fluxes and stable water isotopes to trace the sources of water vapor. Total evaporation was 275.5 mm and represents 55.9 % of the recorded precipitation (498.8 mm), with 11.7 % of the precipitation being intercepted and evaporated along the forest canopy. The understory beneath 8 m contributed 23.6 % of the evaporation, and almost half of it comes from the first 2 m of the understory. Stable water isotope signatures show different soil water sources depending on the plant type. Palms make use of a water source with an isotope signature similar to precipitation and throughfall. Soil water with a fractionated signature is used by trees, bushes and lianas. The isotope signature of water vapor samples overlap among different heights, but it was not possible to make use of the Keeling plot method due to the similar isotope signature of the possible sources of water vapor as well as the high water concentration even on the dryer days. © Author(s) 2020.
语种	英语
scopus关键词	Drought; Evaporation; Forestry; Isotopes; Soil moisture; Tropics; Canopy structure; Complex ecosystems; Different heights; Evaporation flux; Forest canopies; Isotope signatures; Stable water isotopes; Tropical wet forest; Water vapor; dry season; evaporation; forest canopy; precipitation (climatology); soil water; throughfall; tropical forest; understory; water availability; water vapor; wet season; Costa Rica
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/159423
作者单位	Jiménez-Rodríguez, C.D., Delft University of Technology, Water Resources Section, Stevinweg 1, Delft, 2628 CN, Netherlands, Tecnológico de Costa Rica, Escuela de Ingeniería Forestal, Cartago, 159-7050, Costa Rica; Coenders-Gerrits, M., Delft University of Technology, Water Resources Section, Stevinweg 1, Delft, 2628 CN, Netherlands; Wenninger, J., Delft University of Technology, Water Resources Section, Stevinweg 1, Delft, 2628 CN, Netherlands, Department of Water Science and Engineering, IHE Delft Institute for Water Education, Delft, Netherlands; Gonzalez-Angarita, A., Delft University of Technology, Water Resources Section, Stevinweg 1, Delft, 2628 CN, Netherlands; Savenije, H., Delft University of Technology, Water Resources Section, Stevinweg 1, Delft, 2628 CN, Netherlands
推荐引用方式 GB/T 7714	Jiménez-Rodríguez C.D.,Coenders-Gerrits M.,Wenninger J.,et al. Contribution of understory evaporation in a tropical wet forest during the dry season[J],2020,24(4).
APA	Jiménez-Rodríguez C.D.,Coenders-Gerrits M.,Wenninger J.,Gonzalez-Angarita A.,&Savenije H..(2020).Contribution of understory evaporation in a tropical wet forest during the dry season.Hydrology and Earth System Sciences,24(4).
MLA	Jiménez-Rodríguez C.D.,et al."Contribution of understory evaporation in a tropical wet forest during the dry season".Hydrology and Earth System Sciences 24.4(2020).