본 연구는 소광리 일대의 관속식물상을 밝히고 주요 식물들의 분포를 조사하였다. 2009년 4월부터 2010년 9월까지 총 10회에 결쳐 조사를 수행하였다. 그 결과 관속식물은 89과 253속 367종 3아종 53변종 7품종의 430분류군이 확인되었다. 그 중 산림청 지정 희귀식물은 11분류군, 특산식물은 13분류군이 조사되었다. 또한 식물구계학적 특정식물종은 54분류군, 국외반출 승인대상 식물에는 19분류군이 조사되었다. 한편 귀화식물은 15분류군으로 확인되었으며, 귀화율은 3.4%로 나타났다. 조사된 430분류군의 유용도는 식용이 176분류군(40.9%), 약용 145분류군(33.7%), 목초용 114분류군(26.5%), 관상용 63분류군(14.6%), 목재용 15분류군(3.4%), 섬유용 11분류군(2.5%) 그리고 공업용이 4분류군(0.9%)으로 나타났다.
The field survey to investigate the flora in Sogwang-ri, Uljin-gun, was carried out 10 times, from April 2009 to September 2010, and The results summarized as 430 taxa, 89 families, 253 genera, 367 species, 3 subspecies, 53 varieties, and 7 forms. Among these, 13 taxa were recorded as Korean endemic plant species and 11 taxa as rare plant species, which applied by the Korean Forest Service. Furthermore, 54 taxa were listed as specific plant species based on phytogeographical points of view and based on the list of those plants approved for delivery overseas, 17 taxa were recorded as such in the investigated area. There were 15 taxa identified as naturalized plants, and their naturalization ratio was found to be 3.4%. Among the 430 taxa, 178 taxa (40.9%) were categorized as edible plants, 145 taxa (33.7%) as medicinal plants, 114 taxa (26.5%) as pasture plants, 63 taxa (14.6%) as ornamental plants, 15 taxa (3.4%) as timber plants, 11 taxa (2.5%) as fiber plants, and 4 taxa (0.9%) as industrial plants.