Spatial patterns and recent temporal trends in global transpiration modelled using eco-evolutionary optimality

Li, Shijie; Wang, Guojie; Zhu, Chenxia; Hannemann, Marco; Poyatos, Rafael; Lu, Jiao; Li, Ji; Ullah, Waheed; Hagan, Daniel Fiifi Tawia; García-García, Almudena; Liu, Yi; Liu, Qi; Ma, Siyu; Liu, Qiang; Sun, Shanlei; Zhao, Fujie; Peng, Jian

doi:10.1016/j.agrformet.2023.109702

Cited by 4 publications

(1 citation statement)

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“…The estimated rates of global transpiration trend are 0.65, 0.61, and 0.79 mm yr 2 for GLEAM_corr, PML_v2_corr and PM_P_corr, respectively. Importantly, transpiration trend from original products without observational constraints (0.70-1.04 mm yr 2 ) reflects an overestimation by 8%-32% compared to our constrained results (0.65-0.79 mm yr 2 ), indicating that the transpiration trend and its contribution to the overall evapotranspiration change are substantially overestimated by previous studies (F. S. Li et al, 2023;Martens et al, 2017).…”

Section: Trend In Constrained Transpirationcontrasting

confidence: 91%

Observational Constraints and Attribution of Global Plant Transpiration Changes Over the Past Four Decades

Cui,

Ding,

Lian

et al. 2024

Geophysical Research Letters

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Accurate estimation and attribution of large‐scale changes in plant transpiration are critical to understand the impacts of vegetation dynamics on the terrestrial hydrological cycle. However, these aspects remain poorly understood due to the limited reliability of global transpiration products. Here we compile data from 101 site‐based transpiration measurements across the globe and use them to constrain three biophysically based data‐driven transpiration products. The constrained transpiration reveals a prominent increasing trend of 0.61–0.79 mm yr−2 during 1980–2021, which is overestimated by 8%–32% in unconstrained transpiration. We further find that the global transpiration increase is mainly driven by leaf area index increase (40%), followed by climate change (19%), though offset partly by CO2‐induced stomatal closure (−38%) and land use and cover change (−3%). Our refined estimates indicate a less substantial increase of global transpiration than previously thought, improving the understanding of transpiration change impact on global hydrological cycle.

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Section: Trend In Constrained Transpirationcontrasting

confidence: 91%