【摘要】 在自然条件下 ,用气孔下腔与叶面间的水汽压差 (VPDs)取代原有气孔模型中的大气湿度因子 ,可以明显提高气孔模型在自然条件下的适用性。理论分析指出 ,在气孔模型中 ,用VPDs 表达气孔导度对湿度的响应与用蒸腾速率表达气孔导度对蒸腾失水的响应是等价的。更多还原

【Abstract】 Under natural conditions, the use of vapor pressure deficit between mesophyll cell surface and ambient air ( VPD s ) instead of atmospheric humidity factors in some stomatal models may markedly promote the applicability of stomatal models. It has been pointed out from theoretical analysis that the expression of the responses of stomatal conductance to VPD s is equivalent to the expression of responses of stomatal conductance to water loss of transpiration in stomatal models.更多还原