Time filter

Source Type

Wang X.,Biology Institute of Shanxi | Li J.-C.,Biology Institute of Shanxi | Yue J.-Y.,Biology Institute of Shanxi | Zhou X.-M.,Shanxi University | And 4 more authors.
Huanjing Kexue/Environmental Science | Year: 2013

Re-vegetation is mainly applied into regeneration in opencast mine to improve the soil quality. It is very important to choose feasible vegetation types for soil restoration. In this study, three typical forest restoration types were studied at Antaibao mine, namely, Medicago sativa, mixed forests Pinus taebelaefolius-Robinia pseudoacacia-Caragana korshinskii and Elaeagnus angustifolia-Robinia pseudoacacia-Caragana korshinskii-Hipophae rhamnoides, to determine the nutrient contents and enzyme activities in different soil layers. The results showed that re-vegetation markedly increased soil nutrient contents and the enzyme activities during the restoration process. The nutrient content of soil in the P. taebelaefolius-R. pseudoacacia-C. korshinskii mixed forest field was significantly higher than those in other plots. It was found that the soil of the P. taebelaefolius-R. pseudoacacia-C. korshinskii mixed forest had the highest integrated fertility index values. In conclusion, the restoration effects of the P. taebelaefolius-R. pseudoacacia-C. Korshinskii mixed forest was better than that of E. angustifolia-R. pseudoacacia-C. korshinskii-H. rhamnoides, while M. sativa grassland had the least effect.

Zhao Z.,University of Science and Technology of China | Zhao Z.,Key Laboratory of Land Consolidation and Rehabilitation | Bai Z.,University of Science and Technology of China | Bai Z.,Key Laboratory of Land Consolidation and Rehabilitation | And 5 more authors.
Ecological Engineering | Year: 2012

Afforestation of native-tree species is often recommended for ecological restoration, but the understanding of ecological processes of restored vegetation is limited. We investigated the population structure and spatial distribution patterns of restored forest in mine spoil of Pingshuo opencast mine, Shanxi Province, China. After 17 years' development, three planted species (ROPS, ULPU and AIAL) showed significant aggregation although they were regularly distributed at plantation and characterized with great variability in abundance (from 570 to 1817) although they had equal density at plantation. ROPS became the dominant species, especially in the naturally regenerated medium individuals with 3 < DBH ≤ 7. On the contrary, the abundance of medium individuals of ULPU was very low although there's a very high number of small individuals with DBH ≤ 3, indicating a very low survival rate of ULPU seedlings. The difference in survival rate of planting trees and natural regeneration observed in the plot suggested that the environmental adaptability of three species in this area may differ markedly, and therefore, differing species planting pattern may improve the population structure and reduce the economic investment for spoil reclamation. © 2012 Elsevier B.V.

Li J.,Shanxi University | Li J.,CAS Research Center for Eco Environmental Sciences | Zheng Y.,CAS Research Center for Eco Environmental Sciences | Yan J.,Shanxi University | And 4 more authors.
PLoS ONE | Year: 2013

The soil microbial community in reclaimed mining areas is fundamental to vegetative establishment. However, how this community responds to different regeneration scenarios and fertilizer treatments is poorly understood. This research evaluated plant and soil microbial communities from different regeneration scenarios and different fertilizer treatments. Regeneration scenarios significantly influenced soil bacterial, archaeal, and fungal rDNA abundance. The ratios of fungi to bacteria or archaea were increased with fertilizer application. The diversity of both plants and microbes was lowest in Lotus corniculatus grasslands. Regeneration scenario, fertilizer treatment, and their interaction influenced soil microbial richness, diversity and evenness indices. Labile carbon pool 2 was a significant factor affected plant and microbe communities in July, suggesting that plants and microbes may be competing for nutrients. The higher ratios of positive to negative association were found in soil bacteria and total microbe than in archaea and fungi. Stronger clustering of microbial communities from the same regeneration scenario indicated that the vegetative composition of regeneration site may have a greater influence on soil microbial communities than fertilizer treatment. © 2013 Li et al.

Li H.,Shanxi University | Li H.,Biology Institute of Shanxi | Song J.-P.,Shanxi University | Song J.-P.,Shanxi Datong University | And 3 more authors.
Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy | Year: 2012

The inclusion interaction between propranolol (PPL) and p-sulfonatocalix[6]arene (SCX6) was investigated by fluorescence and 1H NMR spectroscopy. Influences of pH, temperature, ionic strength and the concentration of SCX6 were examined in detail. In phosphate buffer solution with pH 7.5, the fluorescence of PPL dramatically quenched upon addition of SCX6 revealing the formation of inclusion complexes between PPL and SCX6. The stoichiometric ratio was verified to be 1:1 by the continuous variation method. The inclusion constant of PPL-SCX6 complexes was calculated as 2.2 × 104 L/mol by the nonlinear curve fitting method. 1H NMR titration spectra testified that the aliphatic chain of PPL may be partially penetrated into the hydrophobic cavity of SCX6. This was confirmed by molecular dynamics calculations. © 2012 Elsevier B.V. All rights reserved.

Jin X.-T.,Shanxi University | Chen M.-L.,Shanxi University | Li R.-J.,Shanxi University | An Q.,China Institute for Radiation Protection | And 6 more authors.
Archives of Toxicology | Year: 2015

PM2.5 (aerodynamic diameter ≤2.5 μm) has been a dominating and ubiquitous air pollutant and has become a global concern. Emerging evidences suggest a positive correlation between PM2.5 and leukemia, but the underlying molecular mechanisms remain unclear and need to be elucidated. Here, we assessed the impacts of PM2.5 on the progression and inflammation of human myeloid leukemia at lower environmental doses and explored the possible pathway. We showed that PM2.5 exposure significantly induced the leukemia cell growth and enhanced the release of inflammatory mediators in both in vitro and in vivo models. Additionally, NF-κB p65 and p-STAT3 were activated in PM2.5-treated leukemia cells, with a concomitant increase in both ROS formation and NADPH oxidase expressions. Strikingly, the supplement of inhibitors, including NAC (ROS), PDTC (NF-κB), or WP1066 (STAT3), contributed to a decline in leukemia cell growth. Furthermore, enhanced expressions of inflammatory cytokines were attenuated by the addition of NAC or PDTC, but not affected by WP1066. This study demonstrates that PM2.5 promotes leukemia progression, identifies a potential intervention target, and provides further understanding of the detrimental effect of PM2.5 exposure on human health. © 2015 Springer-Verlag Berlin Heidelberg

Discover hidden collaborations