2013-2020 gas exchange at Pfynwald

Gas exchange was measured on control, irrigated and irrigation-stop trees at the irrigation experiment Pfynwald, during the years 2013, 2014, 2016-2020. The measurement campaigns served different purposes, resulting in a large dataset containing survey data, CO2 response curves of photosynthesis, light response curves of photosynthesis, and fluorescence measurements. Measurements were done with LiCor 6400 and LiCor 6800 instruments. Until 2016, measurements were done on excised branches or branches lower in the canopy. From 2016 onwards, measurements were done in the top of the canopy using fixed installed scaffolds.
All metadata can be found in the attached documents.

在2013年、2014年及2016-2020年间，于Pfynwald灌溉试验地对对照树、灌溉树及停灌树开展了气体交换测量。测量活动旨在实现不同目标，由此形成的大型数据集包含调查数据、光合作用的CO₂响应曲线、光合作用的光响应曲线及荧光测量数据。测量使用LiCor 6400和LiCor 6800仪器完成。2016年之前，测量对象为离体枝条或冠层下部枝条；2016年起，通过固定安装的支架在冠层顶部开展测量。所有元数据（metadata）可在附件文档中查阅。