衰减量

suí zhe shēng yù jìn chéng de tuī jìn lǜ yè miàn jī shuāi jiǎn liàng yě chéng zēng jiā de qū shì

随着生育进程的推进，绿叶面积衰减量也呈增加的趋势。

With the growth process moving forward, green leaf area decrement had the increasing tendency.