基于激光激发叶绿素荧光分析的叶片水分利用效率模型

Model of Water Use Efficiency of Leaves Based on Laser Induced Chlorophyll Fluorescence Analysis Technique

以无损检测为前提,采用激光为激发光源,对杨树活体叶片进行荧光光谱采集,对采集到的光谱数据进行处理分析得到水分利用效率的荧光光谱敏感波段,建立基于叶片温度修正下的植物水分利用效率与荧光光谱的数学回归模型,模型的复相关系数R2=0.975。并对建立的数学回归模型进行效果检验,相关系数r=0.8746,模型的检测效果较好。

Based on non-destructive detection,the fluorescence spectrum of living leaves of poplar was collected by laser as excitation light source.Sensitive fluorescence spectrum band of water use efficiency was arrived through analyzing spectrum data.A model depending on the modification of leaves temperature was established.The functional relation between water use efficiency and fluorescence spectrum was described and the multiple correlation coefficients R2 were 0.975.The correlation coefficient r between calculated values and measured values was 0.8746 by verification test.