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Dominance and diversity of forest plant species growth on post coal mining soil in the Samarinda City, East Kalimantan Province, Indonesia

Selly Oktashariany Ayub, Yohanes Budi Widianarko, Munifatul Izzati

Doctoral Program of Environmental Science, Postgraduate Program, Diponegoro University, Semarang City, Central Java, Indonesia

The Central of Watershed Management of Mahakam Berau, The Ministry of Environment and Forestry of Indonesia, Samarinda City, East Kalimantan, Indonesia

Department of Food Technology, Agricultural Technology Faculty, Soegijapranata Catholic University, Semarang City, Central Java, Indonesia

Department of Biology, Faculty of Mathematics and Science, Diponegoro University, Semarang City, Central Java, Indonesia

Key words: Forest plant species, Post coal mining soil, Dominance, Diversity, soil remediation


Sinharaja111A post coal mining land contains soil physicochemical properties that are not suitable for plant growth as well as contained high heavy metal. Only resistance plants species would be able to survive in those conditions. Utilization of forest plant species to rehabilitate and remedy an ex-coal mining land at the same time supports biodiversity conservation for Indonesian forest. This study aimed to analyze dominance and diversity of forest plant species growth in post coal mining soil for plant selection in metal phytoremediation. Forest plant density, frequency, dominance, Important Value Index (IVI), diversity index, dominance index and Summed Dominance Ratio (SDR) were analyzed. Forest plant species found in post coal mining site were Acacia mangium Willd., Trema sp, Macaranga gigantea (Reichb.f.& Zoll.), Terminalia cattapa L., Pometia pinnata J.R. & G. Forst., Mangifera indica L., Samanea saman (Jacq.) Merr., Arthocarphus Integra Merr. and Anthocephalus cadamba (Roxb.) Miq. Post coal mining land had homogenous forest plant species due to low diversity. However dominance forest plant species found in those sites were A. mangium, A. cadamba and S. saman. Among those species, A. cadamba is a new potential endemic species in Indonesia for metal remediation in post coal mining soil. Those species had resistances to low soil pH, low soil fertility and high metal content. On the other hand, they also had a potency to be utilized as plants for metal remediation on post coal mining land as well as their economical potencies.

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