英语-请问这里为什么用being?

题目

英语-请问这里为什么用being?
-would you say the paper recycling scheme is working well?
-Definitely! Yes, I really think it's a great idea. And in fact,it's a good way of saving our resources,you know,saving trees being chopped down.

这里为什么是 being chopped down 为什么是being啊?这也不是现在进行时啊

答案

句子要这样理解
And in fact,it's a good way of saving our resources,you know,（a good way of）saving trees (being chopped down).
赞同请采纳!