Sap flow measurements of beech, spruce and Douglas fir in pure and mixed stands in a wet and a dry year in a sandy soil

This dataset accompanies a study quantifying stand-level water use of European beech (Fagus sylvatica), Norway spruce (Picea abies), and Douglas fir (Pseudotsuga menziesii) in pure and mixed stands under contrasting climatic conditions. Using sap flux systems, we monitored tree and stand transpiration on deep sandy soil during one wet and one dry year to assess how species identity, mixing, and interannual variation in water availability affect total forest water consumption.
The dataset provides detailed sap flux, transpiration, and climatic data useful for modelling forest water fluxes and evaluating the hydrological consequences of species composition and drought. It contributes to understanding how species mixing can modulate stand-level water consumption and supports management strategies for climate-resilient forests in Central Europe.

本数据集配套一项定量研究，该研究针对不同气候条件下纯林与混交林中的欧洲山毛榉（Fagus sylvatica）、挪威云杉（Picea abies）及花旗松（Pseudotsuga menziesii）的林分尺度耗水情况展开量化分析。研究采用树液流量监测系统，在1个湿润年与1个干旱年期间，于深层砂质土壤上对单木及林分蒸腾进行了连续监测，以解析物种特性、混交模式以及年际水分可利用性变化对森林总耗水量的影响。
本数据集包含详细的树液流量、蒸腾及气候数据，可用于森林水文通量建模，并可评估物种组成与干旱胁迫带来的水文效应。该数据集有助于揭示物种混交如何调控林分尺度耗水水平，同时可为中欧气候适应性森林的经营管理策略提供科学支撑。