There are a large number of swampy meadows and plateau lakes, which are national Class I protected animals. The unique fish of Bitahai is the Zhongdian leaf fish, as well as the black-necked crane and Zhongdian heavy lip fish. nature reserve. As an important water catchment area on the Qinghai-Tibet Plateau, the Bita Sea receives melted ice and snow and runoff after rainfall, and plays an important role in effectively preventing and controlling floods; the lake water accumulated in the Bita Sea recharges the magma aquifer beneath it. It is of great significance; the Bitahai outlet is connected to underground rivers, forming an integral part of the underground hydrology and spring water system, and supporting surface wetlands; the Bitahai wetland has an important hydrological impact on regional climate regulation and stability, showing Peat system for carbon deposition; Bitahai is a relatively well-preserved closed plateau freshwater lake. Its wetland ecosystem and surrounding forest ecosystem have basically maintained their original state, with little human interference, playing a major role in maintaining high water quality standards. . Because Bita Sea is located on the migration route of wintering migratory birds, it is an important stopping place and wintering place for many rare and endangered wintering migratory birds; most importantly, Bita Sea is an important wintering habitat for the black-necked crane, a species unique to the plateau. The special environment provided by the Bitahai Wetland Ecosystem and the forest ecosystem around the lake has nurtured rare communities such as spruce fir forest (Spruce oleifera - National Level II Protection) and matsutake (National Level II Protection); Bitahai Wetland It is characterized by a high degree of endemism in the fish fauna; at the same time, the Bita Sea supports the basic ecological processes of the Zhongdian leaffish population. Bitahai preserves a complete closed plateau freshwater lake. As one of the sources of the Yangtze River, it receives melted ice and snow and runoff after rainfall, and the lake water supply is stable. It effectively prevents and controls floods and affects the water volume of the middle and lower reaches of the Yangtze River. It plays an important role in balance; in addition to recharging the underlying aquifer to form an underground hydrological system, the accumulated lake water also has high transparency and good lake water quality, forming a plateau lake landscape with excellent ornamental value.