PRI was negatively significantly correlated with the Car/Chl ratio in both the flag leaves and the panicles (R2=0.7745. n=48), indicating that PRI could be used to predict Car/Chl across different vegetation structure. /?

• 植被指数与类胡萝卜素、类胡萝卜素与叶绿素比值的相关性分析表明:PRI与剑叶、穗Car/Chl都有很好的负相关(R~2=0.；7745；n=48)；可以用来预测不同植被结构的Car/Chl;