{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["12(12)"],"submitter":["Huang R"],"pubmed_abstract":["Continental-scale isoscapes of tree-ring oxygen isotopes (δ<sup>18</sup>O<sub>TR</sub>) are crucial for understanding atmospheric circulation dynamics, interpreting climatic significance, and tracing wood provenance. However, continental-scale δ<sup>18</sup>O<sub>TR</sub> isoscapes remain underdeveloped. We compiled 313 multi-year averaged δ<sup>18</sup>O<sub>TR</sub> records across Asia and generated isoscapes using two machine learning approaches: XGBoost and Random Forest. Results reveal a 'sandwich' pattern: depleted values at high (>50°N) and low (<30°N) latitudes, enriched values at mid-latitudes (30°N-50°N). This pattern closely resembles the distribution of precipitation δ<sup>18</sup>O (δ<sup>18</sup>O<sub>P</sub>). Correlation and commonality analyses confirm δ<sup>18</sup>O<sub>P</sub> as the primary driver of δ<sup>18</sup>O<sub>TR</sub> isoscape patterns across Asia. Continental-scale δ<sup>18</sup>O<sub>TR</sub>-elevation relationships are generally insignificant, except in Indian Summer Monsoon regions showing significant negative correlations (<i>r</i> = -0.69, <i>p</i> < 0.05). These findings suggest that δ<sup>18</sup>O-based paleoaltimetry reconstructions work best in regions with dominant moisture sources such as Indian Summer Monsoon regions. This study provides Asia's first continental-scale δ<sup>18</sup>O<sub>TR</sub> isoscapes, establishing a foundation for atmospheric circulation and dendroprovenancing research."],"journal":["National science review"],"pagination":["nwaf481"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC12713636"],"repository":["biostudies-literature"],"pubmed_title":["Asian continental isoscapes of tree-ring δ&lt;sup&gt;18&lt;/sup&gt;O: implications for paleoclimate and paleoenvironment."],"pmcid":["PMC12713636"],"pubmed_authors":["Liu Y","Grießinger J","Guo Z","Meier WJ","Zhao Q","Xu C","An W","Huang R","Zhao Y"],"additional_accession":[]},"is_claimable":false,"name":"Asian continental isoscapes of tree-ring δ&lt;sup&gt;18&lt;/sup&gt;O: implications for paleoclimate and paleoenvironment.","description":"Continental-scale isoscapes of tree-ring oxygen isotopes (δ<sup>18</sup>O<sub>TR</sub>) are crucial for understanding atmospheric circulation dynamics, interpreting climatic significance, and tracing wood provenance. However, continental-scale δ<sup>18</sup>O<sub>TR</sub> isoscapes remain underdeveloped. We compiled 313 multi-year averaged δ<sup>18</sup>O<sub>TR</sub> records across Asia and generated isoscapes using two machine learning approaches: XGBoost and Random Forest. Results reveal a 'sandwich' pattern: depleted values at high (>50°N) and low (<30°N) latitudes, enriched values at mid-latitudes (30°N-50°N). This pattern closely resembles the distribution of precipitation δ<sup>18</sup>O (δ<sup>18</sup>O<sub>P</sub>). Correlation and commonality analyses confirm δ<sup>18</sup>O<sub>P</sub> as the primary driver of δ<sup>18</sup>O<sub>TR</sub> isoscape patterns across Asia. Continental-scale δ<sup>18</sup>O<sub>TR</sub>-elevation relationships are generally insignificant, except in Indian Summer Monsoon regions showing significant negative correlations (<i>r</i> = -0.69, <i>p</i> < 0.05). These findings suggest that δ<sup>18</sup>O-based paleoaltimetry reconstructions work best in regions with dominant moisture sources such as Indian Summer Monsoon regions. This study provides Asia's first continental-scale δ<sup>18</sup>O<sub>TR</sub> isoscapes, establishing a foundation for atmospheric circulation and dendroprovenancing research.","dates":{"release":"2025-01-01T00:00:00Z","publication":"2025 Dec","modification":"2026-06-06T04:49:01.671Z","creation":"2026-05-25T03:12:11.806Z"},"accession":"S-EPMC12713636","cross_references":{"pubmed":["41425697"],"doi":["10.1093/nsr/nwaf481"]}}