Could we create custom ecosystems for conservation purposes?

In my AP Bio class we’ve been covering ecology and I had an idea to create custom ecosystems. It seems to me like we could theoretically make ecosystems incorporating species from similar ecosystems throughout the world, such as a best of Earth’s jungles ecosystem, designing them to be very efficient and have minimal competition. There would likely have to be multiple versions to keep different desired species that would compete with each other and to keep ecosystem diversity.

Given my very low level of expertise I just wanted to ask how viable this is and if any research has been done into it.