Water uptake by plants: perspectives from stable isotope composition

作者：James R. Ehleringer, Todd E. Dawson · 发表于：Plant Cell & Environment · 年份：1992 · DOI：10.1111/j.1365-3040.1992.tb01657.x · 被引用次数：1141 · 研究领域：Plant Water Relations and Carbon Dynamics、Tree-ring climate responses、Plant responses to water stress

ABSTRACT Stable isotope studies of hydrogen and oxygen stable isotope ratios of water within plants are providing new information on water sources, competitive interactions and water use patterns under natural conditions. Variation in the utilization of summer rain by aridland species and limited use of stream water by mature riparian trees are two examples of how stable isotope studies have modified our understanding of plant water relations. Analyses of xylem sap and tree rings have the potential of providing both short‐term and long‐term information on plant water use patterns.