email a friend
printable version
Location Taiwan (China), Chiayi,Yulin
Central coordinates 120o 10.00' East  23o 29.00' North
IBA criteria A1, A4i, A4iii
Area 13,880 ha
Altitude 0 - 1m
Year of IBA assessment 2004

Chinese Wild Bird Federation

Site description Extent of this site: comprised of the downstream section of the Beigang River, its estuary and sand flats and the southern shore of the Dapai River Estuary at Taiwan Sugar Corp. (Taisugar)’s Dongshih Farms and Liujiao. In the north is the north edge of the Beigang River estuary and includes the aquatic areas of Tongshanzhou, Botsiliaoshan, and Waishandingzhou; the border in the south is Liujiao’s Dapai River estuary; the eastern border is Provincial Highway 17; and to the west is the Taiwan Strait. Within the site, the Dongshih and the Aogu Farms are seaside reclaimed, cultivated land belonging to Taisugar. The environment of the farms is both complex and diverse. During the areas early development period, 800 x 800 m fields were laid out, with each bordered by water supply ditches and canals, all of which was surrounded by wind-protection forests. The eastern and central portions of the site are mostly sugar cane fields. On the west, against the sea is a broad, vast marshland; to the south is a vast saltwater lake with Kandelia Kandelia candel and Black Mangrove Avicennia manna; to the northeast are freshwater ponds; the north edge is a roosting area for Egrets. Because of the environmental diversity, this IBA site absolutely is important habitat for wild birds. Besides the habitats of cultivated lands, grassy marshes, and ponds, about half of the remainder is made up of coastal sand flats in a vast estuarine tidal zone formed by estuaries of Liujiao’s Dapai River, the Beigang River and other rivers.

Populations of IBA trigger species

Species Season Period Population estimate Quality of estimate IBA Criteria IUCN Category
Black-faced Spoonbill Platalea minor winter  1994-2001  2-9 individuals  good  A1  Endangered 
Saunders's Gull Saundersilarus saundersi winter  1989-2001  10-150 individuals  good  A1, A4i  Vulnerable 
A4iii Species group - waterbirds unknown  20,000 individuals  unknown  A4iii   


IUCN habitat Habitat detail Extent (% of site)
Wetlands (inland)   major
Artificial - terrestrial   minor
Sea   major

Land use

Land-use Extent (% of site)
other 68%
Notes: Added based on Wild Bird Federation of Taiwan 2001. Important Bird Areas of Taiwan. Taipei:WBFT.
not utilised 17%
Notes: Added based on Wild Bird Federation of Taiwan 2001. Important Bird Areas of Taiwan. Taipei:WBFT.
agriculture 10%
Notes: Added based on Wild Bird Federation of Taiwan 2001. Important Bird Areas of Taiwan. Taipei:WBFT.
water management 6%
Notes: Added based on Wild Bird Federation of Taiwan 2001. Important Bird Areas of Taiwan. Taipei:WBFT.

Other biodiversity • At this site, 290 species of plants have been identified, with the only surviving mangrove being Black Mangrove Avicennia marina.

References • Kaohsiung Wild Bird Society. 1994. Bird investigations on the wetlands along the southwesten coast in Taiwan. Council ofAgriculture. Executive Yuan. • Wetlands Conservation Workgroup. 1994. 1994 Planning examples of the environmentally sensitive areas at the coast of Taiwan- bird, mangrove, and wetland investigations. Environmental Protection Administration, Executive Yuan, Taiwan. • Weng, R. H. Personal unpublished data. Wetlands Taiwan. Bird Database. • Wild Bird Society of Kaohsiung. 1995. 1995 Final report on the conservation area demonstration plan of the coastal environmentally sensitive areas- proposed strategies for the planning of Aogu Wetlands, Chiayi County. Environmental Protection Administration. • Cheng, C. C. and R. Z. Chen. 1995. Analysis of bird communities at Aogu. Proceedings of the Second Coastal and Wetland Conservation Conference. WBFT. • Geography Institute, National Taiwan University. 1995. Investigations and research on the sensitive areas of coastal wetlands, sand dunes, sand flats, and lagoons- investigation and analysis of the coast resources and environmental factors of the western Taiwan. Environmental Protection Administration. • Wetlands Taiwan. 1999. Instructive Manual of the Coastal Wetlands of Southwestern Taiwan. Council of Agriculture, Executive Yuan.

Contribute  Please click here to help BirdLife conserve the world's birds - your data for this IBA and others are vital for helping protect the environment.

Recommended citation  BirdLife International (2014) Important Bird Areas factsheet: Aogu Wetlands. Downloaded from on 22/09/2014

To provide new information to update this factsheet or to correct any errors, please email BirdLife