Seasonal divergence between soil water availability and atmospheric moisture recorded in intra-annual tree-ring δ18O extremes
نویسندگان
چکیده
منابع مشابه
Seasonal temperature and precipitation recorded in the intra-annual oxygen isotope pattern of meteoric water and tree-ring cellulose
Modern and ancient wood is a valuable terrestrial record of carbon ultimately derived from the atmosphere and oxygen inherited from local meteoric water. Many modern and fossil wood specimens display rings sufficiently thick for intra-annual sampling, and analytical techniques are rapidly improving to allow for precise carbon and oxygen isotope measurements on very small samples, yielding unpre...
متن کاملSeasonal transfer of oxygen isotopes from precipitation and soil to the tree ring: source water versus needle water enrichment.
For accurate interpretation of oxygen isotopes in tree rings (δ(18) O), it is necessary to disentangle the mechanisms underlying the variations in the tree's internal water cycle and to understand the transfer of source versus leaf water δ(18) O to phloem sugars and stem wood. We studied the seasonal transfer of oxygen isotopes from precipitation and soil water through the xylem, needles and ph...
متن کاملAvailability of Soil Moisture for Active Absorption in Drying Soil.
There is considerable disagreement as to whether or not water is equally available to plants in drying soil over the entire range from field capacity to wilting percentage. Some workers have repeatedly stated that water is equally available over this range (5, 18, 23, 24) while considerable data have accumulated which indicate that physiological processes in plants are altered as a result of de...
متن کاملSeasonal Contributions to the Climatic Variations Recorded in Tree Ring Deuterium/Hydrogen Data
Tree ring 6D records do not always reflect variations in the average annual 6D values of local precipitation, but may instead record changes in the 6D values of seasonal components of precipitation. The 6D values measured for tree ring sequences from the three trees in this study are correlated with variations in summer climatic conditions at each of the sites. The D/H ratios in an aspen from F...
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ژورنال
عنوان ژورنال: Environmental Research Letters
سال: 2020
ISSN: 1748-9326
DOI: 10.1088/1748-9326/ab9792