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| 1 | Diversity of free-living nitrogen-fixing microorganisms in wastelands of copper mine tailings during the process of natural ecological restoration显示文摘Biological nitrogen fixing is an important source of nitrogen input in the natural ecological restoration of mine wastelands.The diversity of nifH genes in tailings samples under different plant communities in Yangshanchong and Tongguanshan wastelands in Tongling,was analyzed using polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) approach.The nitrogen-fixing microorganism community in the upper layer of tailings of Tongguanshan wasteland discarded in 1980 showed higher Shannon-Wiener diversity index than that in Yangshanchong wasteland discarded in 1991.The diversity of nifH genes in Yangshanchong wasteland of copper mine tailings did not display a consistent successional tendency with development of plant communities during the process of natural ecological restoration.Phylogenetic analysis of 25 sequences of nifH gene fragments retrieved from the DGGE gels indicated that there were mainly two taxa of free-living nitrogen-fixing microorganisms,Proteobacteria and Cyanobacteria living in the wastelands investigated,most of which were unique and uncultured.Canonical correspondence analysis (CCA) based on the relationship between band patterns of DGGE profile and physico-chemical properties of tailings samples showed that the diversity of nifH genes in different tailing samples was mainly affected by loss of ignition,water content,pH and available Zn contents of wastelands.The dominant plant species and development period of plant communities by ameliorating pH,reducing the toxicity of heavy metals,increasing organic matter and water content affected the diversity and structure of the free-living nitrogenfixing microorganisms in wastelands of copper mine tailings. | Jing Zhan Qingye Sun | 2011 | Journal of Environmental Sciences2011，23，3： | 11 |
| 2 | Changes of DOM and its correlation with internal nutrient release during cyanobacterial growth and decline in Lake Chaohu, China显示文摘The seasonal changes in dissolved organic matter(DOM),and its correlation with the release of internal nutrients during the annual cycle of cyanobacteria in the eutrophic Lake Chaohu,China,were investigated from four sampling periods between November 2020 and July 2021.The DOM fluorescence components were identified as protein-like C1,microbial humic-like C2,and terrestrial humic-like C3.The highest total fluorescence intensity(FT)of DOM in sediments during the incubation stage is due to the decomposition and degradation of cyanobacteria remains.The lowest humification of DOM and the highest proportion of C1 in waters during the initial cyanobacterial growth indicate that fresh algae are the main source.The highest molecular weight of DOM and FT of the C2 in sediments during cyanobacterial outbreaks indicate the concurrent deposition of undegraded cyanobacterial remains and microbial degradation.The components of DOM are affected mainly by the dissolved total phosphorus in waters,while the temperature drives the annual cycle of cyanobacteria.The decreasing C1 in sediments and increasing nutrients in waters from the cyanobacterial incubation to outbreak indicate that mineralization of algal organic matter contributes importantly to the release of internal nutrients,with the strongest release of phosphorus observed during the early growth of cyanobacteria.The humic-like C2 and C3 components could also affect the dynamics of internal phosphorus through the formation of organic colloids and organic–inorganic ligands.The results show that the degradation of DOM leads to nutrients release and thus supports the continuous growth of cyanobacteria in eutrophic Lake Chaohu. | Yan Bao Tao Huang Chengwu Ning Tingting Sun Pengliang Tao Jie Wang Qingye Sun | 2023 | Journal of Environmental Sciences2023，，2： | 2 |
| 3 | Assessment of trace metal bioavailability in garden soils and health risks via consumption of vegetables in the vicinity of Tongling mining area, China显示文摘 | Decong Xu Ping Zhou Jing Zhan Yi Gao Changming Dou Qingye Sun | 2013 | Ecotoxicology and Environmental Safety2013，，： | 1 |
| 4 | Chemical properties of the upper railings beneath biotic crusts显示文摘 | SUN Qingye AN Shuqing YANG Linzhang | 2004 | Eco- logical Engineering2004，23，1： | 1 |
| 5 | Chemical properties of the upper tailings beneath biotic crusts显示文摘 | SUN QINGYE AN SHUQING YANG LINGZHANG | 2004 | Ecological Engineering2004，23，： | 1 |
| 6 | The adsorption of basic dyes from aqueous solution on modified peat-resin particle 显示文摘 | SUN Qingye YANG Linzhang | 2003 | Water Research2003，37，7： | 1 |
| 7 | The adsorption of basic dyes from aqueous solution on modified peat-resin particle 显示文摘 | Sun Qingye Yang Linzhang | 2003 | Water Research2003，37，7： | 1 |
| 8 | The adsorption of basic dyes from a- queous solution on modified peat-resin particle 显示文摘 | Qingye Sun Linzhang Yang | 2003 | Water Research2003，37，7： | 1 |
| 9 | The adsorption of basic dyes from aqueous solution on modified peat-resin particle显示文摘 | SUN Qingye YANG Linzhang | 2003 | Water Research2003，37，7： | 1 |
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