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Location China (mainland), Yunnan
Central coordinates 99o 38.00' East  27o 52.00' North
IBA criteria A1, A4i, A4iii
Area 2,400 ha
Altitude 3,260 m
Year of IBA assessment 2009

Site description Located in the Zhongden area of north-western Yunnan. The IBA is a high-altitude marsh, surrounded by high mountains (3,800-4,449 m) in the east, west and north. The lake extends 10 km from north to south and 2.3 km from east to west, and there is 500 ha of open water even in the dry season. There are also shallow water marshes and meadows, which are the main habitats for wintering Grus nigricollis.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Black-necked Crane Grus nigricollis unknown  1991  160 individuals  unknown  A1, A4i  Vulnerable 
A4iii Species group - waterbirds unknown  2008  present  A4iii   

Protected areas

Protected area Designation Area (ha) Relationship with IBA Overlap with IBA (ha)  
Napahai Nature Reserve 2,400 is identical to site 2,400  
Napahai Wetland Wetlands of International Importance (Ramsar) 2,083 is identical to site 2,083  


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland)   -

Other biodiversity No information.

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Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Nagpag Co (Napa Hai) Nature Reserve. Downloaded from on 26/10/2014

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