The main plant found on the floor of the fir forests is the Yushan dwarf bamboo. Because Yushan dwarf bamboo possesses well-developed underground stems, it grows in patches. It most frequently appears after fir forests have been damaged by fires, quickly sending up new shoots.
冷杉林下的主要地被植物就是玉山箭竹，由於箭竹具有發達的地下莖，所以成片生長，最常在冷杉林遭遇森林大火後冒出地面，並且很快的抽出新芽。