Root discrimination and vapor buffering control mangrove lipid hydrogen isotope fractionation to resolve the greenhouse-field paradox

This dataset includes the concentrations of n-alkanes and n-fatty acids, as well as the stable hydrogen and oxygen isotopic compositions (δ²H and δ¹⁸O) of various water sources associated with the mangrove species Sonneratia apetala, sampled during the peak wet season. The analyzed water pools include surface water (SW), xylem water (XW), and leaf water (LW). The dataset highlights isotopic fractionation associated with key physiological stages: water uptake from surface water to xylem (αXW-SW), transpiration between leaf and xylem water (αLW-XW), and lipid biosynthesis between mangrove waxes (n-fatty acids and n-alkanes) and leaf water (αLipid-LW). Additionally, it presents the apparent net fractionation between mangrove lipids and surface water (αLipid-SW).本数据集包含无瓣海桑（Sonneratia apetala）相关各类水源的正构烷烃（n-alkanes）、正构脂肪酸（n-fatty acids）浓度，以及稳定氢、氧同位素组成（δ²H和δ¹⁸O），样品采集于湿季盛期。所分析的水体包括地表水（SW）、木质部水（XW）与叶片水（LW）。 该数据集涵盖与关键生理阶段相关的同位素分馏现象：从地表水到木质部的水分吸收分馏（αXW-SW）、叶片与木质部水之间的蒸腾分馏（αLW-XW），以及红树林蜡质（正构脂肪酸与正构烷烃）与叶片水之间的脂质生物合成分馏（αLipid-LW）。 此外，数据集还提供了红树林脂质与地表水之间的表观净分馏值（αLipid-SW）。