黑河下游荒漠河岸林植物叶片生理观测数据（2011-2012）

植物叶片水分生理是研究叶片尺度植物蒸腾耗水的主要手段，也是认识植物耐旱机理的重要指标，本项目于2011-2012年对叶片尺度水分生理进行观测，观测仪器为Li-6400，每个月选择典型晴天2-3天，频率为2小时，主要观测参数包括: 净光合速率(Pn, μmol CO2·m–2· s–1)、蒸腾速率(Tr, mol H2O·m–2·s–1)、气孔导度(gs, mol H2O·m–2·s–1)、胞间和环境CO2浓度(Ci和Ca, μmol CO2·mol–1)、光合有效辐射(PA R, μmol·m–2·s–1)、气温(Ta, ℃)、叶面大气相对湿度(hs, %)和水汽压亏缺(Ds, KPa)等。

Plant leaf water physiology is the primary approach for investigating plant transpiration water consumption at the leaf scale, and a critical indicator for understanding the mechanisms of plant drought tolerance. This study conducted observations on leaf-scale water physiology during 2011–2012, using the Li-6400 as the measuring instrument. 2–3 typical sunny days were selected per month, with a measurement frequency of once every 2 hours. The main observed parameters include: Net photosynthetic rate (Pn, μmol CO₂·m⁻²·s⁻¹), Transpiration rate (Tr, mol H₂O·m⁻²·s⁻¹), Stomatal conductance (gs, mol H₂O·m⁻²·s⁻¹), Intercellular and environmental CO₂ concentrations (Ci and Ca, μmol CO₂·mol⁻¹), Photosynthetically active radiation (PAR, μmol·m⁻²·s⁻¹), Air temperature (Ta, ℃), Leaf-surface atmospheric relative humidity (hs, %), and Water vapor pressure deficit (Ds, kPa), among others.