Plant diversity in selected mine tailings areas [from the following mining corporations in the Philippines: United Paragon Mining Corp., Paracale, Camarines Norte, Atlas Consolidated Mining Corp., Toledo City, Cebu, Balatoc Mine-Benguet Mining Corp., Itogon, Benguet, VICLODE Mining Corp., a subsidiary of APEX (Ayala-Puyat Exploration) Mining Corp., Compostela Valley, Maco, Davao del Norte]
2005
Cadiz, N.M.
One of the major problems faced by environmentalists concerning rehabilitation of areas barren by the presence of heavy metals is the insufficient information on the appropriate planting materials to use. More often, scientists results to trial and error method. The present study showed that the best indicator for potential phytoremediation species are those plants already growing around areas contaminated by heavy metals (e.g. mine tailings damp). These plants already possess the genetic potential necessary for survival in sites laden with toxic and hazardous wastes. Plants for phytoremediation can tolerate heavy metal-rich soil, are fast growing, have high biomass production, produce extensive root system and establish synergism with beneficial microorganisms. Some of the species identified to be potential phytoremediation species are Acacia auriculiformis (auri) Astrocalyx calycina (tanghan), Casuarina equisetifolia (agoho), Saccharum spontaneum (talahib), Imperata cylindrica (cogon), Lantana camara (sapirit), Mimosa pudica (makahiya), and Leucaena leucocephala (ipil-ipil). Two fern species grow well in copper contaminated sites, namely, Pteris sp. and Nephrolepis sp.
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