Magnitude and determinants of plant root hydraulic redistribution: A global synthesis analysis.

ABSTRACT: Plant root hydraulic redistribution (HR) has been widely recognized as a phenomenon that helps alleviate vegetation drought stress. However, a systematic assessment of the magnitude of HR and its drivers at the global scale are lacking. We collected 37 peer-reviewed papers (comprising 47 research sites) published in 1900-2018 and comprehensively analyzed the magnitude of HR and its underlying factors. We used a weighting method to analyze HR magnitude and its effect on plant transpiration. Machine learning algorithms (boosted regression trees) and structural equation modeling were used to determine the influence of each factor on HR magnitude. We found that the magnitude of HR was 0.249 mm H₂O d^-1 (95% CI, 0.113-0.384) and its contribution to plant transpiration was 2

SUBMITTER: Yang G 

PROVIDER: S-EPMC9355616 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature