scholarly journals Introduction to the native plant species with phytoremediation potential growing in a high Fe and Zn contaminated site in the copper mine of Dehmadan, Iran

Author(s):  
Shokoofeh Hajihashemi ◽  
Shakiba Rajabpoor ◽  
Marian Brestic

Abstract Mining activity is one main source of heavy metal pollution. In this study, Al, Ba, Be, Ca, Cd, Co, Ce, Cr, Cu, Fe, Ga, Gd, K, La, Li, Mg, Mn, Na, Nb, Nd, Ni, P, Pb, S, Sc, Si, Sr, Ti, V, Y, Zn and Zr were measured by ICP-OES analyzing of the soils taken in the Dehmadan mining area, Chaharmahal and Bakhtiari, Iran. Al, Fe, Cu, Si and Zn were the most frequent metals in the mining area. Phytoremediation is one of the eco-friendly methods to effectively remediate soils contaminated with heavy metals. Consequently, the wild plants were collected from the mining area and subjected to ICP-OES analysis to determine the elements concentrations. A reverse relation was observed between the metals concentrations and vegetation density in the mining area. Finally, the bioconcentration factor (BCF) of the root and shoot, and translocation factor (TF) were determined to assess phytoremediation potential of species. The shoot elements concentrations in combination with BCF and TF greater than 1 were assess to determine hyperaccumulators and plants with excluder potential. Overall, the results showed that BCF in parallel with TF and metals concentrations can advance the knowledge of recognizing hyperaccumulators for phytoremediation of polluted environment.

2021 ◽  
Vol 261 ◽  
pp. 04015
Author(s):  
Fengli Mou ◽  
Jingmin Yang ◽  
Biwen Li ◽  
Jianjun Chen ◽  
Jixiu Wang

In order to screen out the plants used to repair heavy metal pollution in the soil, five plants and surface soil were collected in the Huize lead-zinc mine area, centered on the hyperaccumulator plant Arabis alpina L. var. parviflora Franch, measured the heavy metal content of in shoot and root of plant and surface soil, and analyzed the characteristics of heavy metal accumulation in plants. The results showed that the soil Cd pollution in the Huize lead-zinc mining area was the most serious; among the five plants, the Cd bioconcentration factor(BCF) and translocation factor(TF) of A. alpina were more than 1, and the TF of Pb was more than 1; the TF of Anaphalis margaritacea, Cyananthus inflatus and Arenaria orbiculata to Cu and Zn were more than 1, the TF of Juncus effusus to Cd and Zn were more than 1. These five plants had good tolerance to heavy metals and were of great significance to the remediation and restoration of heavy metal contaminated soil in lead-zinc mining areas.


2017 ◽  
Vol 24 (34) ◽  
pp. 26839-26850 ◽  
Author(s):  
Aikelaimu Aihemaiti ◽  
Jianguo Jiang ◽  
De’an Li ◽  
Tianran Li ◽  
Wenjie Zhang ◽  
...  

2021 ◽  
Author(s):  
Lei Wang ◽  
Xiaorong Xie ◽  
Qifeng Li ◽  
Zhifeng Yu ◽  
Guangde Hu ◽  
...  

Abstract Though gold mines provide significant economic benefits to local governments, mining causes soil pollution by potentially toxic trace elements (PTEs) in mining areas, especially in the Qinghai-Tibet Plateau. Screening of native plant species from mining areas is now an effective, inexpensive, and eco-friendly method for the remediation of PTEs in situ. In the present study, we conducted experiments to assess the accumulation of As, Cd, Pb, and Zn in 12 native plant species growing on a typical gold mining area in Qinghai-Tibet Plateau. Our results showed that rhizosphere soils have high soil organic matter content, high levels of As, and moderate levels of Cd. G. pylzowianum accumulated relatively higher As in its shoots and exhibited TF higher than 1 for As (4.65), Cd (1.87), and Pb (1.36). P. saundersiana had BCF-S higher than 1 for Cd (4.52) and Pb (1.70), whereas its TF was higher than 1 for As, Cd, Pb, and Zn. These plant species also exhibit strong tolerance to these PTEs. Furthermore, E. nutans accumulated low levels of As, Cd, Pb, and Zn in their shoots and exhibited TF values lower than 1 for the four PTEs. Therefore, G. pylzowianum could be used for the in situ phytoextraction of As, and P. saundersiana can be used as an effective plant for Cd and Pb phytoextraction. E. nutans is better suited for the phytostabilisation of multiple PTEs. Our study is of significant importance for introducing native plant species to remediate PTE-contaminated soils, particularly As and Cd, and has a good potential for developing PTE phytoremediation strategies at mining sites.


2019 ◽  
Vol 27 (3) ◽  
pp. 199-206
Author(s):  
Rafael Gustavo Becker ◽  
Gabriela Paise ◽  
Marco Aurélio Pizo

AbstractNatural grasslands are declining due to loss, fragmentation and degradation, resulting in the decline of grassland-associated bird species. The Pampas Biome in south Brazil is not exception to this worldwide trend, facing the expansion of croplands and afforestation with exotic tree plantations for cellulose production. To cope with the continuous degradation and loss of grasslands, restoration is an important conservation strategy, but basic information regarding the response of the fauna to restoration practices in southeastern South America grasslands is lacking. Here we compared the structure of bird communities in natural grasslands and revegetated grasslands after mining by planting native and exotic grasses. We sampled birds using 5-min point counts with unlimited radius in three replicates of each habitat (natural and revegetated grasslands; average size 22.2 ± 2.3 ha). We also compared the vegetation density between the two habitat types. The structure of bird communities at natural and revegetated grasslands differed, with natural grasslands presenting higher species richness (42 vs. 35 species) and abundance (1459 vs. 839 records) than revegetated areas, and also a distinct species composition. Ten of the 11 grassland species that were associated to one of the two habitat types occurred more frequently in natural grasslands, which had higher vegetation density than revegetated areas. Even a decade after the beginning of the restoration process, revegetated areas did not resemble natural grasslands in bird species richness, abundance, and composition. These results differed from another study conducted in the Brazilian Pampas in which native plant species were used to actively restore a grassland. Therefore, until we have additional studies addressing the use of exotic grasses for the recovery of bird communities in South America grasslands, we encourage greater representation of native plant species in restoration projects.


2021 ◽  
Author(s):  
Thays Afonso ◽  
Carolina Demarco ◽  
Simone Pieniz ◽  
Maurízio Quadro ◽  
Flávio Camargo ◽  
...  

Abstract The aim of this study was to investigate the phytoremediation potential promoted by Baccharis dracunculifolia DC. and Baccharis trimera (Less.) DC. incopper mining tailings area, Southern Brazil. The plants were selected considering their spontaneous growth on tailings. The phytoremediation indexes as a translocation factor (TF), bioconcentration factor (BCF), metal extraction ratio (MER) and plant effective number (PEN) were carried out. Both species showed higher concentration of heavy metals in the roots in relation to the shoots. B. trimera showed potential for phytoextraction of Zn, Cd, Cr, Pb and phytostabilization of Ba and Ni, whereas B. dracunculifolia showed potential for phytoextraction Pb and phytostabilization of Cu, Zn, and Ba. B. trimera showed higher potential in phytoremediation of the metals Cu > Zn > Cr > Ni and Cd than the B. dracunculifolia. B. trimera requires a smaller number of plants to remove 1 g of Cu, Zn, Cr, Pb, Niand Cd than the B. dracunculifolia. The values of PENs for Cu were close to those estimated for B. dracunculifolia, but the PENs (Cu) and PENt (Cu) in B. trimera are much lower, meaning that a smaller number of plants are required for decontamination. Both species showed potential for phytoremediation of metals and grew spontaneously in the tailing mining area.


EDIS ◽  
2017 ◽  
Vol 2017 (5) ◽  
Author(s):  
Mary C. Bammer ◽  
Josh Campbell ◽  
Chase B. Kimmel ◽  
James D.. Ellis ◽  
Jaret C. Daniels

The establishment of native wildflower plantings in Florida can benefit agricultural producers as well as native pollinators and other beneficial insects (predators and parasitoids). The plantings do this by:  providing forage and nesting sites for bees, butterflies, and other pollinators, increasing wild bee numbers possibly across the farm, and increasing natural enemies of insect pests (that also depend on forage and nesting sites). This document discusses choosing the right mix of native plant species to benefit many pollinator species, as well as proper site selection, planting practices, and weed control techniques. Wildflower plots should be practical to manage, maximize benefits to wildlife, and fit into the overall management practices of the property. 


2015 ◽  
Vol 16 (2) ◽  
pp. 87-95 ◽  
Author(s):  
N. Grant-Hoffman ◽  
S. Parr ◽  
T. Blanke

2017 ◽  
Vol 18 (3) ◽  
pp. 227-234
Author(s):  
Jessica D Lubell ◽  
Bryan Connolly ◽  
Kristina N Jones

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