In order to accurately determine the water budget of trees (see also yesterday's post), it is crucial to establish a connection between the quantity of sapwood and the transpiration rate from the leaves. One essential factor in this process is obtaining accurate measurements of the sapwood cross-sectional areas (CSA). However, it is important to note that these CSA measurements can vary significantly from one plant to another. Acquiring this data can be challenging, and as a result, researchers have conducted studies aiming to establish allometric relationships as a means to estimate these measurements. To assist me in finding relevant literature on this topic, I reached out to my colleague involved in the WATERSTEM project. Below, you will find the literature they recommended.
Berry, Z. Carter, Nathaniel Looker, Friso Holwerda, León Rodrigo Gómez Aguilar, Perla Ortiz Colin, Teresa González Martínez, and Heidi Asbjornsen. 2018. “Why Size Matters: The Interactive Influences of Tree Diameter Distribution and Sap Flow Parameters on Upscaled Transpiration.” Tree Physiology 38 (2): 263–75. https://doi.org/10.1093/treephys/tpx124.
Kubota, Mitsumasa, John Tenhunen, Reiner Zimmermann, Markus Schmidt, Samuel Adiku, and Yoshitaka Kakubari. n.d. “Influences of Environmental Factors on the Radial Profile of Sap Flux Density in Fagus Crenata Growing at Different Elevations in the Naeba.” https://academic.oup.com/treephys/article/25/5/545/1712832.
Lüttschwager, Dietmar, and Hubert Jochheim. 2020. “Drought Primarily Reduces Canopy Transpiration of Exposed Beech Trees and Decreases the Share of Water Uptake from Deeper Soil Layers.” Forests, Trees and Livelihoods 11 (5): 537. https://doi.org/10.3390/f11050537.
Lüttschwager, Dietmar, and Rainer Remus. 2007. “Radial Distribution of Sap Flux Density in Trunks of a Mature Beech Stand.” Annals of Forest Science 64 (4): 431–38. https://doi.org/10.1051/forest:2007020.
Niccoli, Francesco, Arturo Pacheco-Solana, Sylvain Delzon, Jerzy Piotr Kabala, Shahla Asgharinia, Simona Castaldi, Riccardo Valentini, and Giovanna Battipaglia. 2023. “Effects of Wildfire on Growth, Transpiration and Hydraulic Properties of Pinus Pinaster Aiton Forest.” Dendrochronologia 79 (126086): 126086. https://doi.org/10.1016/j.dendro.2023.126086.
Petrík, Peter, Ina Zavadilová, Ladislav Šigut, Natalia Kowalska, Anja Petek-Petrik, Justyna Szatniewska, Georg Jocher, and Marian Pavelka. 2022. “Impact of Environmental Conditions and Seasonality on Ecosystem Transpiration and Evapotranspiration Partitioning (T/ET Ratio) of Pure European Beech Forest.” WATER 14 (19): 3015. https://doi.org/10.3390/w14193015.
Thurner, Martin, Christian Beer, Thomas Crowther, Daniel Falster, Stefano Manzoni, Anatoly Prokushkin, and Ernst-Detlef Schulze. 2019. “Sapwood Biomass Carbon in Northern Boreal and Temperate Forests.” Global Ecology and Biogeography: A Journal of Macroecology 28 (5): 640–60. https://doi.org/10.1111/geb.12883.