Strong overestimation of water‐use efficiency responses to rising CO 2 in tree‐ring studies

Volume: 26, Issue: 8, Pages: 4538 - 4558
Published: Jun 23, 2020
Abstract
The carbon isotope ratio (δ13C) in tree rings is commonly used to derive estimates of the assimilation-to-stomatal conductance rate of trees, that is, intrinsic water-use efficiency (iWUE). Recent studies have observed increased iWUE in response to rising atmospheric CO2 concentrations (Ca), in many different species, genera and biomes. However, increasing rates of iWUE vary widely from one study to another, likely because numerous covarying...
Paper Details
Title
Strong overestimation of water‐use efficiency responses to rising CO 2 in tree‐ring studies
Published Date
Jun 23, 2020
Volume
26
Issue
8
Pages
4538 - 4558
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