Hi, Rakhi this is a good hobby to have. And converting from the hobby into the career is the best decision one can take.

You will be happy to learn that, yes you can opt for Environmental management for your love for nature.

I'll share a link with you over here to help you know more about this and in detail.

https://study.com/environmental_management_and_mba_degree.html

Do check this link.

I think there are very less MBA in this field and choosing this field may open many opportunities for you. So I wish you a very all the best for you career.