环境因子对常绿阔叶树种脱耦联系数及冠层气孔导度估算的影响

张振振,赵平,赵秀华,张锦秀,朱丽薇,欧阳磊,张笑颜

Impact of environmental factors on the decoupling coefficient and the estimation of canopy stomatal conductance for ever-green broad-leaved tree species

ZHANG Zhen-Zhen,ZHAO Ping,ZHAO Xiu-Hua,ZHANG Jin-Xiu,ZHU Li-Wei,OUYANG Lei,ZHANG Xiao-Yan

表2 文中常用变量及其缩写

Table 2 Common variables and their abbreviations

变量 Variables 缩写 Abbreviations 单位 Units 冠层气孔导度 Canopy stomatal conductance GS mmol·m-2·s-1 冠层脱耦联系数 Canopy decoupling coefficient Ω 无纲量 No dimension 光合有效辐射 Photosynthetically active radiation PAR μmol·m-2·s-1 水汽压亏缺 Water vapor deficit D kPa 风速 Wind speed u m·s-1 水汽导度 Water vapor conductance GT mmol·m-2·s-1 冠层导度 Canopy conductance gc mmol·m-2·s-1 空气动力学导度 Aerodynamic conductance ga mmol·m-2·s-1 树木蒸腾速率 Tree transpiration rates E g·m-2·s-1 叶面积指数 Leaf area index LAI m2·m-2 胸径 Diameter at breast height DBH cm 树高 Tree height H m 边材面积 Sap wood area AS m2 总叶面积 Total leaf area Al m2 气动阻力 Stomatal resistance ra s·m-1 土壤含水量 Soil water content SWC m3·m-3