scholarly journals Erratum to: An application of a new method in permafrost environment assessment of Muli mining area in Qinghai-Tibet Plateau, China

2010 ◽  
Vol 63 (3) ◽  
pp. 617-617
Author(s):  
Wei Cao ◽  
Yu Sheng ◽  
Yinghong Qin ◽  
Jing Li ◽  
Jichun Wu
2014 ◽  
Vol 8 (10) ◽  
pp. 840-860 ◽  
Author(s):  
Zhen Li ◽  
Panpan Tang ◽  
Jianmin Zhou ◽  
Bangsen Tian ◽  
Quan Chen ◽  
...  

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.


2017 ◽  
Vol 28 (3) ◽  
pp. 1-10
Author(s):  
Cao Wei ◽  
Sheng Yu ◽  
Wu Jichun ◽  
Wang Shengting

AbstractThe coal mining has brought a series of ecological problems and environmental problems in permafrost regions. Taking Muli coal-mining area as an example, this article attempts to analyse the environmental harms caused by coal mining and its protection measures in permafrost regions of Qinghai–Tibet Plateau. This article analyses the influence of open mining on the surrounding permafrost around the open pit by using the numerical simulation. The results show that (1) based on the interrelation between coal mining and permafrost environment, these main environmental harm include the permafrost change and the natural environment change in cold regions; (2) once the surface temperature rises due to open mining, the permafrost will disappear with the increase of exploitation life. If considering the solar radiation, the climate conditions and the geological condition around the pit edge, the maximum thaw depth will be more than 2 m; (3) the protection measures are proposed to avoid the disadvantage impact on the permafrost environment caused by coal mining. It will provide a scientific basis for the resource development and environment protection in cold regions.


2007 ◽  
Vol 53 (8) ◽  
pp. 1000-1010 ◽  
Author(s):  
Gaosen Zhang ◽  
Fujun Niu ◽  
Xiaojun Ma ◽  
Wei Liu ◽  
Maoxing Dong ◽  
...  

The Qinghai-Tibet Plateau in east Asia is a unique and important permafrost environment. However, its microbiology remains largely unexplored to date. In this study, sediment samples were collected from the Qinghai-Tibet Plateau permafrost region, bacteria isolation procedures were performed 8 times, and the samples incubated at 4 °C for nearly 3 months. The number of colony forming units (cfu) ranged from 0 to 107/(g dry soil). The quantity of culturable bacteria grew exponentially within the first few weeks, and then slowed gradually to a plateau. Phylogenetic analyses indicated that all the isolates fell into 6 categories: high G+C Gram-positive bacteria, low G+C Gram-positive bacteria, α-Proteobacteria, β-Proteobacteria, γ-Proteobacteria, and Cytophaga–Flavobacterium–Bacteroides group bacteria. The isolates belong to 19 genera, but the genera Arthrobacter and Pseudomonas were predominant. With the increase in incubation time, the isolated populations changed in terms of both species and their respective quantities. Of the 33 analyzed isolates, 9 isolates related to 8 genera might be new taxa. These results suggest that the Qinghai-Tibet Plateau permafrost region is a specific ecologic niche that accommodates an original microbial assemblage.


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