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3 气孔导度响应叶水势的函数表达式及决定系数

Table 3 Fitting functions and determining coefficients of stomatal conductance response to leaf water potential

植物种类	响应函数	降雨前			降雨后
植物种类	响应函数	参数	R²	n	参数	R²	n
梭梭	$f (ψ) = d_{1} + d_{2} ψ$	$d_{1} = 0.233, ? d_{2} = 0.042$	0.332^*	42	$d_{1} = 0.162, ? d_{2} = 0.026$	0.385^*	68
泡泡刺	$f (ψ) = d_{1} + d_{2} ψ$	$d_{1} = 1.114, ? d_{2} = 0.196$	0.627^*	42	$d_{1} = 0.526, ? d_{2} = 0.101$	0.548^*	68
沙拐枣	$f (ψ) = d_{1} + d_{2} ψ$	$d_{1} = 0.394, ? d_{2} = 0.119$	0.472^*	42	$d_{1} = 0.245, ? d_{2} = 0.080$	0.353^*	68