Looking at previous studies of the Masan region, Kim has studied the plant flora of the region as part of the
National Natural Ecosystem Study and Kim has reported its study on the Degree of Green Naturality of the area. In the terms of the Yeohangsan area of the Masan region, Jung and Kim (1999) has reported 321 plant species of 217 genera and 83 families in the 2nd National Natural Environment Research while Kim and Lee (1999) reported information regarding the flora of the GoseongHaman region.