Introduction to the protected area: The Naolihe National Nature Reserve is located in the hinterland of the Sanjiang Plain. It consists of three provincial nature reserves, Changlin Island, Yanwo Island, and Naolihe, and one Qixinghe municipal nature reserve. Districts were merged. The reserve was established in 1998, with a core area of ​​37,045.0 hectares, a buffer area of ​​5,312.4 hectares, and an experimental area of ​​70,425.8 hectares.