At these elevations there is much rainfall but relatively little wind, and the mountains are shrouded in clouds and mists all year round; hence the forests there are also known as cloud forests. In this environment of constant humidity, the Taiwan red cypress grew into East Asia's biggest conifer, with average heights from 30 to 40 meters.
中海拔雨大風小，終年雲霧籠罩，又稱為霧林帶，穩定的濕氣孕育下，檜木長成東亞第一大針葉樹，平均高三十至四十公尺以上。