It is one of the largest river deltas in the world , and currently protected as part of the yukon delta national wildlife refuge .
育空三角洲是全世界最大的三角洲之一，目前作为“育空三角洲国家生态保护区”而受到保护。
Only the yukon has full control of its onshore natural resources , something the other two territories are still negotiating with the federal government .
