To help me understand what you are looking for, could you please provide more context?
For example:
* Where did you hear this term? Was it in a book, article, lecture, or other source?
* What is the broader topic or context? Is it about history, agriculture, or something else?
* What do you think the term might mean? Any ideas you have about what "enrichment plantation" could refer to?
With more information, I can better understand your question and give you a helpful answer.