Gotjawal is composed of warm-temperate forest and temperate forest along the wide expanses around Jeju, with relatively high diversity of plants and vegetation. However, the existing biome shows some typical features of the secondary forest, as it has been constantly damaged by human intervention. Most of Gotjawal forests that remains today lies close to grasslands of the island’s midland.
Gotjawal forest is composed of two key tree species: broad-leaved ever- greens that include Jong-ga-si-na-mu (Quercus glauca), Gu-sil-jat-bam-na-mu (Castanopsis cuspidata), Nok-na-mu (Cinnamomum camphora), A-wae -na-mu (Viburnum odoratissimum), Sen-dal-na-mu (Machilus japonica), Dong-baek-na-mu (Camellia japon- ica) and deciduous broad-leaved trees that include Ttae-juk-na-mu (Styrax japonicus), Paeng-na-mu (Celtis sinen -sis), Dan-pung-na-mu (Acer palm- atum), Gom-ui-mal-chae-na-mu (Co -rnus macrophylla), San-yu-ja-na-mu (Xylosma congesta), I-na-mu (Idesia polycarpa), Ye-deok-na-mu (Mallotus japonicus), Mu-hwan-ja-na-mu (Sa -pindus mukorossi). Some Gotjawal forests have both evergreen and de- ciduous broad-leaved trees, mixed to -gether and growing in the same place