Prospect of indigenous plant species for revegetation in the tailings area of ex community gold mine

Abstract

Ekyastuti W, Astiani D, Roslinda E. 2016. Prospect of indigenous plant species for revegetation in the tailings area of ex community gold mining. Biodiversitas 17: 764-768. One of the reclamation activities in the tailings area of ex community gold mine is revegetation. The success of revegetation is strongly influenced by the selection of suitable plant species. The purpose of this research was to determine the prospects of indigenous plant species for revegetation in the tailings area of ex community gold mine. Research has been conducted at the tailings area of ex community gold mining in Menjalin subdistricts Landak District West Kalimantan, using an experiment method with randomized complete block design (RCBD). Used ss basic for blocking is the difference of tailings area age: 2 years old and 10 years old after mining activities. In both locations, seven indigenous plant species were planted, i.e: Dillenia suffruticosa, Vitex pinnata, Archidendron pauciflorum, Anacardium occidentale, Shorea leprosula, Alstonia scholaris and Hevea brasiliensis. The results showed that the seven indigenous plant species are tolerant to mercury and can grow well in the tailing areas of ex community gold mine of both 2-years and 10-years after mining. Five indigenous plant species use phytostabilization to remediate mercury in the plant tissue, while two others species use phytoextraction. Therefore, the prospect of using indigenous plant species for revegetation in tailings area of ex community gold mine is very well.

Arbuscular mycorrhizal fungi and Rhizobium enhance the growth of Samanea saman (trembesi) planted on gold-mine tailings in Pongkor, West Java, Indonesia

“…Nodule number/plant 24.0 a 20.0 a 52.0 b 22.0 a Note: Numbers followed by the different letters in the same line show significant differences based on the DMRT test with an error rate of 5% The 95% of survival rate of S. saman was greater than that was reported for other local plant species in West Kalimantan, such as Hevea brasiliensis, Archidendron pauciflorum, Shorea leprosula and Vitex pinnata (Ekyastuti et al, 2016;Jusran 2016). The dominance of plant species and the growth rate of certain plants in a mining area, especially tailings, is strongly influenced by the level of contamination, soil physical and chemical properties, the level of plant adaptation, and other environmental factors in mine tailings (Anawar et al, 2013;Ekyastuti et al, 2016;Setyaningsih 2018b, Lestari et al, 2019, including the adaptability of plants to limit the absorption of heavy metals at the roots (Reichman 2002;Setyaningsih et al, 2012) Dual inoculations with AMF and Rhizobium triggered a better growth of the S. saman seedlings than single inoculation treatment, as previously reported in a number of different plant species (Yaseen et al, 2016;Havugimana et al, 2016). AMF and Rhizobium inoculations can also play a pivotal role in increasing plant growth in areas with high heavy metal content through improved plant nutrition (Pierre et al, 2014).…”

Molecular identification of endophytic fungi isolated from the tuber of Dahlia variabilis and exploration of their ability in producing ß-galactosidase

“…Results show that forest degradation, beside it shifted forest structure spesies composition (Astiani 2016), it reduced carbon stock of each forest type. Lowland, peatland, and swamp forest reduced their stand biomass by 58%, 31%, and 26% consecutively.…”

“…The biomass quantity losses approximately depend on degrees of forest degradation. Eventhough some indigenous species could regrowth even in very insufficient physical and fertility soil (Ekyastuti et al 2016), the tree biomass grow very slow. Forest land use changes to oilpalm (3 years old) and shrub land decreased aboveground biomass by ~75-86%.…”

“…The changes are not only in forest vegetation density, structure, and their potential to stock and emit carbon but also in species composition. The condition could lead to reduce their productivities (Lambin 1999;Astiani 2016;Astiani et al 2016). Since tropical forests play a major role in regulating global carbon, fluxes and stocks-especially in peatland (Anderson 1983;Maltby and Immirzi 1993;Brown 2002;Hooijer et al 2010), even a very small alteration to carbon balance in a biome, could have a significant effect on atmospheric greenhouse gasses especially carbon dioxide (Rieley and Page 2005;Hooijer et al 2006;Uryu et al 2008;Wood et al 2012).…”

Chemical Characteristic of Forest Soil and Gold Mine Tailings and Their Effect to the Plant Growth of Two Leguminous Trees

“…Important step of the activities for reclamation in post gold mining is revegetation, however revegetation is not easy. Since gold mine tailings area of post gold mine has limitation as medium for planting a successful revegetation would be quite challenging [7]. These factors slow down or prevent the revegetation process and consequent stabilization of mine tailings [2].…”