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Acta Oceanologica Sinica 2011年第3期30卷 92-99页

作者： LI Jialin BAI Jie GAO Huiwang LIU Guangxing Key Laboratory of Marine environmental Science and Ecology of Ministry of Education College of Environmental Science and Engineering Ocean University of China Qingdao 266100 China Yantai Institute of Coastal Zone Research Chinese Academy of Sciences Yantai 264003 China

The spatial distribution of ammonia-oxidizing Betaproteobacteria （βAOB） was investigated by FISH （fluorescence in situ hybridization） and DGGE （denaturing gradient get electrophoresis） techniques in the sediment off the Changjiang River Estuary. Sediment samples were collected from eight stations in June before the formation of hypoxia zone in 2.06. The abundance of βAOB ranged from 1.87× 10^5 to 3.53.10^5 cells/g of sediment. βAOB abundance did not present a negative correlation with salinity, whereas salinity was implicated as the primary factor affecting nitrification rates. The DGGE profiles of PCR-amplified amoA gene fragments revealed that the βAOB community structure of sample S2.separated from other samples at the level of 40% similarity. The variations in composition ofβAOB were significantly correlated with the salinity, temperature, absorption ability of sediments and TOC. The statistical analysis indicates that theβAOB abundance was a main factor to influence nitrification rates with an influence ratio of 87.7% at the level of 40% biodiversity similarity. Considering the good correlation between βAOB abundance and nitrification estimates, the abundance and diversity of βAOB community could be expected as an indirect index of nitrification activity at the study sea area in summer.

关键词： ammonia-oxidizing Betaproteobacteria (βAOB) diversity abundance nitrification surface sediment Changiiang River Estuarv (CRE)

Phytoremediation for cutslope of quarry mountain by climber plant

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Phytoremediation for cutslope of quarry mountain by climber ...

Pollen record from red clay sequence in the central Loess Plateau between 8.10 and 2.60Ma

International Symposium on Phytoremediation and Ecosystem Health

作者： Zhongqiang Wang 1 2.and Lianghuan Wu 1 1 moe Key Lab of environmental Remediation and Ecosystem Health {2. of environmental and Resource sciences Zhejiang university Hangzhou 3.002. china 2.{2. of Urban and environmental sciences Northeast Normal university Changchun 13.02. china

＜正＞Rock exploitation has resulted in a number of mountain cutslopes of slope angle being higher than 70 degree,rough and soilless surface in *** has aesthetic impacts on the local *** cutslope revegetation has beco... 详细信息

关键词： Cutslope phytoremediation quarry mountain parthenocissus tricuspichata Plach

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Science Bulletin 2005年第19期 116-125页

作者： MA Yuzhen1, WU Fuli1,3. FANG Xiaomin3.1, LI Jijun1, AN Zhisheng2.& WANG Wei1 1. Key Laboratory of Western china’s environmental Systems ({2.) and college of Resources and Environment, Lanzhou university, Lanzhou 73.000, china 2. State Key Laboratory of Loess and Quaternary Geology, Institute of earth Environment, Chinese Academy of sciences, Xi’an 710054, china 3. Institute of Tibetan Plateau Research, Chinese Academy of sciences, Beijing 100085, china

The Late Miocene and Pliocene are the key periods for understanding the origin and development of the present Asian monsoon circulations and ecologic environ-ments. Here we present a pollen record from Chaona Red Clay section located in the central Loess Plateau in attempt to establish the histories of vegetation and associated climate changes between 8.10 and 2.60 Ma. Our results show that Gramineae-dominated woodland-grasslands developed in this region with Cedrus- and Pinus-characterized montane coniferous forests distributing in higher elevations from 8.10 to 6.73.Ma, probably suggesting a semi-humid climate in a warm-temperate zone. A subsequent expansion of Ulmus- dominated deciduous forests and a synchronous increase of Gramineae-dominated grassland reflect a warmer and more humid climate between 6.73.and 5.67 Ma. The vegetation changed to an Artemisia- and Gramineae-characterized steppe in lower elevations and to a coniferous forest in higher elevations from 5.67 to 3.71 Ma, implying probably a warm and semiarid climate in lowland and hill, and a colder and moister climate in mountain. During this period, a consider-able warmer and more humid climate occurred between 4.61 and 4.07 Ma as indicated by pollen assemblages. The period between 3.71 and 2.58 Ma was characterized by the disap-pearance of Cedrus and Tsuga and also by an abrupt expan-sion of Cupressaceae, reflecting a drastic enhancement of monsoon-related climatic seasonality.

关键词： Loess Plateau red clay pollen record vegetation evolu-tion winter and summer monsoon

Catalytic performance of Pt/HY-β in n-octane hydroisomerization

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Petroleum Science 2009年第3期6卷 299-305页

作者： Jin Changlei MA Bo Zhang Xiwen Ling Fengxiang Zhang Zhizhi Qin Bo college of Petrochemical Engineering Liaoning University of Petroleum and Chemical Technology Fushun Liaoning 113001 China Department of environmental and Chemical Engineering Tangshan College Tangshan 063000 Hebei China Fushun Research Institute of Petroleum and Petrochemicals SINOPEC Fushun Liaoning 113001 China

A bifunctional catalyst Pt/HY-β was prepared from a bimicroporous composite zeolite Y-β. Characterization results showed that the specific surface area, pore volume, and acid amount of the catalyst Pt/HY-β all decreased compared to the original zeolite. The catalytic performance of this catalyst in n-octane hydroisomerization was investigated in a fixed bed stainless steel tubular reactor. The results showed that at a hydrogen/n-octane volume ratio of 1000, pressure of 0.6 MPa, temperature of 2.0 ℃ and LHSV of 3.h^-1, the conversion of n-octane, yield of liquid, hydrocracking rate and yield of iso-octane were 52.3.1}, 88.66%, 12.60%, 3..51%, respectively.

关键词： Composite zeolite Pt/HY-β catalyst n-octane hydroisomerization

Evolution of the Xiaotian-Mozitan fault and its implications for exhumation of Dabie HP-UHP rocks

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Progress in Natural Science:Materials International 2008年第6期18卷 713-722页

作者： Biwei Xianga,Yongsheng Wanga,*,Changcheng Li b,Guang Zhu a,Yonghong Shi a aSchool of Resource and environmental Engineering,Hefei university of Technology,Hefei 2.0009,{2. bDepartment of earth sciences,university of Western Ontario,Ont.,London,Canada N6A5B7 School of Resource and environmental Engineering Hefei University of Technology Hefei 230009 China Department of earth sciences University of Western Ontario Ont. London Canada N6A5B7

The Xiaotian-Mozitan fault(XMF)located north of the Dabie orogenic belt separates the North Dabie complex to the south from the Beihuaiyang low-grade metamorphic rocks to the *** comprises several NW-striking ductile shear zones and brittle *** brit-tle faults obviously overprinted on the ductile shear zones and promoted the development of the volcanic basins in early Cretaceous to the north,which suggests that the brittle faults were normal faults formed in early Cretaceous during doming of the Dabie orogenic *** ductile shear zone superposed on the north Dabie gray gneiss,and it is an important channel where the Dabie HP-UHP rocks *** obtaining new structural constraint on exhumation of the HP-UHP rocks,we present here experimental results on the microstructure,quartz C-axis fabrics and the microprobe analyses of *** ductile shear zone was determined to be formed at a temperature of 600-650°C and pressure of 1.1 GPa by the mineral deformation,microprobe analyses and geobarometry of Si-in-phengite of the mylonite,the results suggest that the mylonite now exposed on the surface experienced an upper amphibolite-facies metamorphism in the lower *** mineral stretching lineation varies from horizontal in the east segment to sub-dip in the *** sense indicators from outcrop and thin sections of orientated specimen and quartz C-axis fabrics suggest that the XMF is a sinis-tral normal *** kinematics analysis of the ductile shear zone indicates that the exhumation of Dabie HP-UHP rocks is the results of a SE-directed extrusion and an anticlockwise rotation around its eastern pivot simultaneously.

关键词： Xiaotian-Mozitan fault zone Exhumation boundary Ductile shear zone Brittle normal fault

Fluorometric enzyme immunosensing system based on natural product resveratrol for horseradish peroxidase and Ag/SiO_2.nanoparticles

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Science china Chemistry 2008年第3期51卷 233-240页

作者： GONG FuChun, CAO Zhong, TAN ShuZhen, TAN YaFei & HE XiaoChun college of Chemistry and environmental Engineering, Changsha {2. of Science and Technology, Changsha 410076,{3. 1. college of Chemistry and environmental Engineering Changsha University of Science and Technology Changsha 410076 China

The properties of resveratrol (3., 4′, 5-trihydroxystlbene, RST) were for the first time evaluated as a potential substrate for horseradish peroxidase (HRP)-catalyzed fluorogenic reaction. The properties of RST for use as fluorogenic substrates for HRP and its application in immunoassays were compared with commercially available substrates such as p-hydroxyphenylpropionic acid (pHPPA), chavicol and Amplex red by a fluoroimmunosensing method in the use of Schistosomia japonicum antibody (SjAb) as a model analyte. The fluoroimmunosensing device was constructed by dispersing Schistosomia japonicum antigen (SjAg), nano-Ag/SiO2.particles and sol-gel at low temperature. In pH 5.8 Britton-Robinson buffer (B-R), HRP-SjAb conjugates can catalyze the polymerization reaction of RST by H2.2.forming fluorescent dimmers. The increase of the fluorescence intensity of the dimmers product at emission of 462.nm (excitation: 3.5 nm) is proportional to the concentration of HRP-SjAb binding to the SjAg entrapped in the nano-Ag/SiO2.particles-sol-gel matrix. A competitive binding assay has been used to determine SjAb in rabbit serum with the aid of SjAb labeled with HRP. Substrate RST showed comparable ability for HRP detection and its enzyme-linked immunosensing reaction system, in a linear detection ranging of 1.5×10-6-7.3.10-4 g/L and with a detection limit of 1.5×10-6 g/L. The immobilized biocomposites surface could be regenerated by simply polishing with an alumina paper, with an excellent reproducibility (RSD = 4.7%). The proposed method has been successfully used for analysis of the rabbit serum sample with satisfactory results.

关键词： resveratrol HRP fluorogenic substrate Ag/SiO2 nanoparticles enzyme-linked immunosensing Schistosomia japonicum

Heavy Metal Runoff in Relation to Soil Characteristics

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Pedosphere 2001年第2期11卷 137-142页

作者： ZHAO XIULAN, QING CHANGLE and WEI SHIQIANG college Of Resources and environmental Science, Southwest Agricultural {2., Chongqing 400716 ({3.) 西南农业大学重庆 400716

Cu, Zn, Pb and Hg runoff from yellow limestone soil and purple soils and the relationships between the mobility of the heavy metals and the soil characteristics were studied in laboratory using a rainfall simulator. The results showed that the concentrations of soluble Zn in surface runoff were significantly negatively correlated with the contents of 2.mm particles and CEC of the soils, indicating that Zn was mostly adsorbed by clays in the soils. The contents of Cu and Hg in surface runoff were positively related to their contents in the soils. The amounts of Cu, Zn, Pb and Hg removed by surface runoff were influenced by the amounts of soil and water losses and their contents in the soils, and were closely related to the contents of soil particles 1-0.02.mm in size.

关键词： heavy metal mobility soil characteristics surface runoff

Characteristics of the subglacially-formed debris-rich chemical deposits and related subglacial processes of Qiangyong Glacier,Tibet

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Journal of Geographical sciences 2003年第4期13卷 455-462页

作者： LUO Risheng, CAO Jim, LIU Gengnian, GUI Zhijiu(college of environmental {2.,{3., Beijing 100871, china) college of environmental {2. Peking University Beijing China

Subglacially-formed debris-rich chemical deposits were found both on bedrock surface and in bedrock crevice on the edge of Qiangyong Glacier, one of the continental glaciers in Tibet. Grain size distribution, internal structures and chemical components of the chemical deposits were analyzed. It can be inferred that the temperature of some part of the ice-bedrock interface is close to the melting point and there exists pressure melting water under Qiangyong Glacier. Debris, especially those from continental aerosols, can release Ca++ in the water. At the lee-side of obstacles on glacier bed the CO2.in the melting water might escape from the water and the melting water might refreeze due to the dramatically reduced pressure, making the enrichment and precipitation of CaCO3. The existence of subglacial melting water and the process of regelation under Qiangyong Glacier indicate that sliding could contribute some proportion to the entire movement of Qiangyong Glacier and it belongs to multiplex cold-temperate glaciers.

关键词： Qiangyong Glacier, Tibet subglacially-formed chemical deposits subglacial process continental glacier

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植物物种多样性的垂直分布格局

生物多样性 2004年第1期12卷 20-28页

作者：唐志尧方精云北京大学环境学院生态学系

生物多样性沿环境梯度的变化趋势是生物多样性研究的一个重要议题 ,而海拔梯度包含了多种环境因子的梯度效应 ,因此研究生物多样性的海拔梯度格局对于揭示生物多样性的环境梯度变化规律具有重要意义。在不同的研究尺度 ,植物多样性沿海... 详细信息

生物多样性沿环境梯度的变化趋势是生物多样性研究的一个重要议题 ,而海拔梯度包含了多种环境因子的梯度效应 ,因此研究生物多样性的海拔梯度格局对于揭示生物多样性的环境梯度变化规律具有重要意义。在不同的研究尺度 ,植物多样性沿海拔梯度具有不同的分布格局 ,而形成这种格局的因素有很大差异。本文从α多样性 ,β多样性和γ多样性三个尺度总结了植物物种多样性沿海拔梯度分布格局及其环境解释。α多样性沿海拔梯度的分布格局在不同生活型的物种之间差异很大 ,但对于木本植物来说 ,虽然也存在其他格局 ,但α多样性随海拔升高而降低是被广泛接受的一种格局。在一般情况下 ,β多样性随着海拔的升高而降低 ,并且对于不同生活型的物种 ,β多样性沿海拔梯度具有相似的分布格局。γ多样性沿海拔梯度具有两种分布格局 :偏峰分布格局和显著的负相关格局 ;特有物种数往往随着海拔的升高而减少 ,而特有度则随着海拔的升高而增加。

关键词：物种多样性海拔梯度 α多样性 β多样性 γ多样性

A numerical study of the wintertime double-warm-tongue structure in the Huanghai(Yellow) Sea

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Acta Oceanologica Sinica 2009年第4期28卷 8-15页

作者： SHAN Feng QIAO Fangli LU Xingang XIA Changshui college of Physical and environmental Oceanography Ocean University of China Qingdao 266003 China First Institute of Oceanography State Oceanic Administration Qingdao 266061 China

Satellite remote sensing observations show that during winter, sea surface temperature （SST） presents the structure of double warm tongues in the Huanghai Sea trough： the western and the eastern warm tongues. Numerical experiments based on POM are carried out to study the forming mechanism of this thermal structure and its relation to the Huanghai Sea Warm Current （HSWC）. The control experiment reproduces this phenomenon quite well, and comparing experiments investigate the effect of wind and tide. It is found that the western warm tongue is mainly caused by the HSWC, which can be strengthened by wintertime southward wind. The eastern warm tongue develops under the influence of an anti-clockwise circulation which is induced by the temperature front of the Huanghai Sea Cold Water Mass （HSCWM） in summer and autumn. In the eastern portion of this circulation, the northward current carries warm water to the north, forming the eastern warm tongue, which remains till winter.

关键词： two-warm-tongue structure Huanghai Sea Warm Current Huanghai Sea Cold Water Mass POM