The characteristics of raindrop composition and reduced rainfall kinetic energy were studied with the "stain" technique in coniferous forest and alpine shrubbery of Wolong nature reserve Region. And the applicability of three kinds of methods for calculation of raindrop terminal velocity was also compared. The results showed that: the variety of rainfall kinetic energy through the canopy of coniferous forests and shrubbery showed some difference. In shrubbery the rainfall kinetic energy under forest canopy was commonly lower than that of outside. Moreover the reducing function was improved with the increasing of rainfall intensity. In coniferous forest the rainfall kinetic energy under forest canopy was commonly higher than that of outside. And the energy ratio of inner rain with outside rain was decreased along with enhanced rainfall intensity. Better formulas calculating raindrop terminal velocity were Beard experience formula

Sha Yuqing formula (and revised Newton formula).