Okay kiddo, imagine there's a group of really small creatures called gnomes that live in a special place that's been created just for them. This place is called a gnome reserve. It's kind of like a big garden or forest where the gnomes can live and play without any danger from people or other animals.
The gnome reserve is made to be a safe and happy home for the gnomes. It's full of places for them to hide and food for them to eat. There are also things for the gnomes to do, like climb trees and splash in little streams.
The people who take care of the gnome reserve make sure that everything is just right for the gnomes. They keep the place clean and tidy, and make sure that the plants and animals are healthy too. If anything goes wrong in the gnome reserve, like a tree falls down or an animal gets sick, the people will take care of it so that the gnomes can keep living happily.
So basically, a gnome reserve is a special place for gnomes to live where they can be safe and happy, and people take care of it to make sure everything is okay. Cool, huh?