Analysis of Weed Vegetation in Vicinity of Abandoned Mines
2010
Hong, S.H., Korea University, Seoul, Republic of Korea | Lee, Y.H., Korea University, Seoul, Republic of Korea | Na, C.S., Korea University, Seoul, Republic of Korea | Kim, D.Y., Korea University, Seoul, Republic of Korea | Kim, J.G., Korea University, Seoul, Republic of Korea | Kang, B.H., Korea University, Seoul, Republic of Korea | Shim, S.I., Gyeongsang National University, Jinju, Republic of Korea
Field study to find appropriate species for phytoremediation and phytomonitoring with higher plants was carried out at four abandoned metalliferous mines. In order to know the tolerant degree of plant resources collected at heavy metal polluted sites, soil and plants were sampled at same sites and metal concentrations were determined. Most serious heavy metal polluted in the sites was As that showed range from 29.1 to 1372.2 mg kg-¹ in investigated area. The dominant species were Oenothera biennis, Commelina communis, Persicaria senticosa, Conyza annuus, Artemisia princeps, and Erigeron canadensis. These species were predominant species that were proliferated in any survey area. Compared with other sites, vegetational characteristics of Dal-Seong, a mine site abandoned early in 1973, showed higher diversity index and lower dominance index. Distributions of weed species according to life cycle indicated that the proportions of perennial plants were lowered in every investigated site. Although the polluted areas were distant from each other, similarity indices among these vegetation were relatively similar. These results means the vegetations of abandoned mine areas were begining stage of vegetational succession, and the vegetations were adversely affected by disturbance with heavy-metals and lack of water in soil.
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