Soil and tree stem xylem water isotope data from two pan-European sampling campaigns
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985874%3A_____%2F25%3A00599697" target="_blank" >RIV/67985874:_____/25:00599697 - isvavai.cz</a>
Alternative codes found
RIV/68407700:21110/25:00386458 RIV/00216208:11310/25:10510139
Result on the web
<a href="https://essd.copernicus.org/articles/17/6129/2025/" target="_blank" >https://essd.copernicus.org/articles/17/6129/2025/</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5194/essd-17-6129-2025" target="_blank" >10.5194/essd-17-6129-2025</a>
Alternative languages
Result language
angličtina
Original language name
Soil and tree stem xylem water isotope data from two pan-European sampling campaigns
Original language description
Stable isotope ratios of hydrogen (δ2H) and oxygen (δ18O) are crucial for studying ecohydrological dynamics in forests. However, most studies are confined to single sites, resulting in a lack of large-scale isotope data for understanding tree water uptake. Here, we provide a first systematic isotope dataset of soil and stem xylem water collected during two pan-European sampling campaigns at 40 beech (Fagus sylvatica), spruce (Picea abies), or mixed beech-spruce forest sites in spring and summer 2023 (Lehmann et al., 2024). The dataset is complemented by additional site-, soil-, and tree-specific metadata. The samples and metadata were collected by different researchers across Europe following a standardized protocol. Soil samples were taken at up to 5 depths (ranging from 0 to 90 cm) and stem xylem samples from three beech and/or spruce trees per site. All samples were sent to a single laboratory, where all analytical work was conducted. Water was extracted using cryogenic vacuum distillation and analyzed with an isotope laser spectrometer. Additionally, a subset of the samples was analyzed with an isotope ratio mass spectrometer. Data quality checks revealed a high mean total extraction efficiency, mean absolute water amount (> 1 mL), as well as high analytical accuracy and precision. The water isotopic signature of soil and stem xylem water varied as a function of the geographic origin and changed from spring to summer across all sites. While δ2H and δ18O values were strongly correlated, the soil water data plotted closer to the Global Meteoric Water Line (GMWL) than the stem xylem water. Specifically, the δ2H values of the stem xylem were more enriched than those of the soil water, leading to a systematic deviation from the GMWL. Isotopic enrichment of the stem xylem water was larger for spruce than for beech trees at mixed forest sites. This dataset is particularly useful for large-scale studies on plant water use, ecohydrological model testing, and isotope mapping across Europe.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10501 - Hydrology
Result continuities
Project
<a href="/en/project/GA22-12837S" target="_blank" >GA22-12837S: Hydrological and hydrochemical response of montane peat bogs to climate change</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Earth System Science Data
ISSN
1866-3508
e-ISSN
1866-3516
Volume of the periodical
17
Issue of the periodical within the volume
11
Country of publishing house
DE - GERMANY
Number of pages
19
Pages from-to
6129-6147
UT code for WoS article
001616178200001
EID of the result in the Scopus database
2-s2.0-105021844018