Wildlife Refuge, Major Wildlife Habitats

Yilan County Government

The wetland has an altitude of 470 m and is located in the mountains in Xi Village of Yuanshan Township, Yilan County. It is within parcel no.308 of Shuanglian Reservoir Sub-section and is designated for water management use.

Shuanglian Reservoir Important Wetland is formed from a quake lake caused by collapsing slope. This is a unique terrain in Taiwan. Shuanglian Reservoir is divided into the upper and lower reservoirs. The lower has dried up. The upper reservoir makes up the scope of this wetland, which can be further divided into the north and south water bodies. The south lake is over 1.5 m deep, while the north lake is between 1 to 1.5 m deep.

A wide range of animal and plant species, including rare species, can be found in Shuanglian Reservoir. It has the only floating island (moving mat) in Taiwan. The floating island is formed by the accumulation of emergent plants and humus. The shadow cast underneath the island creates a habitat that fosters biodiversity within the wetland and purifies the water. Plants recorded here include 62 families, 138 genres and 176 species, such as the endemic species, Kusano willow, water willow, Mori cleyera and Gonostegia matsudai, and rare species such as acuminate cyclosorus, Kusano willow and Cladium jamaicense.
There are 26 families and 39 species of birds, including protected species such as the mandarin duck, osprey and common kestrel; endemic species such as Taiwan blue magpie. There are 55 families and 248 species of insects, including the endemic and protected species, golden-winged dragonfly. The 5 families and 19 species of amphibians include the protected species, emerald tree frog and Taipei tree frog.

N/A

Yellow Turtle, Pangolin, Mandarin Duck, Asian Crested Goshawk, Besra Sparrow Hawk, and Gray-sided Laughing Thrush.

Taipei Green Tree Frog, Formosan Barking Deer, and Rhacophorus prasinatus.

When it rains, soils, fertilizers and pesticides flow into the reservoir due to vegetable production in the surrounding farmlands. The reservoir's surrounding roads, nearby farmlands and human activities may potentially block the reservoir's flow.

Forest Bureau, Council of Agriculture; the Society of Wilderness.