干旱区荒漠<strong>-</strong>绿洲过渡带<strong>3</strong>种典型灌木气孔导度对环境变化的响应及其对蒸腾的调控

干旱区荒漠-绿洲过渡带3种典型灌木气孔导度对环境变化的响应及其对蒸腾的调控

郭飞,吉喜斌,金博文,赵丽雯,赵文玥,焦丹丹

The Response of Stomatal Conductance of Three Typical Shrubs to Environmental Change and Stomatal Regulation of Transpiration in an Arid Desert-oasis Ecotone

Fei GUO,Xibin JI,Bowen JIN,Liwen ZHAO,Wenyue ZHAO,Dandan JIAO

表4 气孔导度模型表达式及决定系数

Table 4 Fitting functions of stomatal conductance and their coefficients of determination

植物种类	模型表达式	外界环境	2020年		2019年
植物种类	模型表达式	外界环境	R²	n	R²	n
梭梭	$g_{s} = 0.237 \frac{a_{1}}{a_{2} + V P D} (b_{1} + b_{2} T + b_{3} T^{2}) (d_{1} + d_{2} ψ)$	降雨前	0.625^*	63	0.479^*	90
梭梭		降雨后	0.722^*	65	0.646^*	72
泡泡刺	$g_{s} = 0.468 \frac{a_{1}}{a_{2} + V P D} (b_{1} + b_{2} T + b_{3} T^{2}) (d_{1} + d_{2} ψ)$	降雨前	0.747^*	63	0.827^*	90
泡泡刺		降雨后	0.858^*	65	0.682^*	72
沙拐枣	$g_{s} = 0.397 \frac{a_{1}}{a_{2} + V P D} (b_{1} + b_{2} T + b_{3} T^{2}) (d_{1} + d_{2} ψ)$	降雨前	0.689^*	63	0.669^*	90
沙拐枣		降雨后	0.674^*	65	0.651^*	72