Fushan Experimental Forest along with the Research Center is located at the boundaries of Taipei and Yilan Counties, with elevations ranging from 2,000 to 4600 feet. The area has an average annual temperature of 18.5°C, average rainfall of 4125 mm, and average annual relative humidity of 94.1%.
The Fushan Experimental Forest is designated into 3 zones, Water Source Reserve, Botanical Garden and Hapen Nature Reserve.
The northernmost is a 355.7-ha Water Source Reserve with a predominately natural broadleaf forest. Both Happen and Tsukeng Creeks originate in the area. This area is maintained in its original state and is open only to various research and surveillance activities; casual visitors are not permitted to enter.
The central zone is a 409.5-ha Botanical Garden; in addition to providing sites of research and experimentation, a relatively flat area of 30 ha is developed into an administrative complex and a plant display area. A systematic collection of endemic Taiwanese plants is cultivated for display to maximize the garden's academic research, environmental education, resource conservation, and forest recreation functions.
South of the botanical garden is the 332.7-ha Hapen Nature Reserve, a proclaimed nature reserve designated by the Ministry of Agriculture in accordance with the Cultural Heritage Preservation Act. The purpose is to protect the natural ecosystem of this region to preserve its genetic resources, allowing for perpetual ongoing observation and research.
