Extent of this site: the north portion of the Fushan Botanical Garden, and the south portion of the Hapen Nature Reserve. It is bounded on the north by Ayu Mt. with the height of 1419 m, on the south by Hongtsi Mt., and on the west by Chihliangchiu Mt. On the east side is the watershed of the Zukeng Creek, a branch of the Lanyang River, and on the west is the Hapen Creek watershed, an upstream portion of the Nanshih River; from east to west, the area stretches 4.3 km. The Hapen Nature Reserve encompasses an area of 332.7 ha, including national forests which straddle the boundary between Taipei and Ilan Counties, separated into the Wenshan forest administrative district compartment No. 72 and No. 15’s second small compartment, and the Lanyang Forest District’s administrative compartment No. 54, 56, and 57. The Fushan Botanical Garden encompasses 409.5 ha and has milder slopes; within the garden there are about 16 km of tourist trails, promoting outdoor education. This site has a temperate, humid climate; the terrain is undulating. Because this area is secluded, and transportation is not convenient, most of the area maintains the most complete mid- to-lower elevation broadleaf forest in Taiwan, with the dominant plants of the Lauraceae and the Fagaceae families.
IBA A2 criterion species: 8 endemic species are commonly seen here: including Formosan Whistling Thrush, White-throated Hill Partridge, Formosan Blue Magpie, White-eared Sibia, Formosan Yuhina, Formosan Yellow Tit, Swinhoe’s Pheasant and Steere’s Liocichla. • At this site 141 species of birds have been recorded, among which are the rare Tawny Fish Owl, Indian Black Eagle, Asian Crested Goshawk, Black-faced Cuckoo Shrike, Formosan Blue Magpie, Mandarin Duck, and Spotted Scops Owl. • In fall, flocks of passing wild Mandarin Ducks will stop and rest at the Fushan Botanical Garden.
Non-bird biodiversity: • 515 species of vascular plants in 329 genera and 124 families are recorded at the Fushan Experimental Forest. • Commonly seen wildlife include the Formosan Reeve’s Muntjac Muntiacus reevesi micrurus, Formosan Wild Boar Sus scrofa taivanus, and the Emerald Green Tree Frog Rhacophorus smaragdinus.
BirdLife International (2021) Important Bird Areas factsheet: Hapen and Fushan. Downloaded from http://www.birdlife.org on 26/01/2021.