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Study of Organochlorine Pesticides in Eco-geochemical Survey of Soil in shandong Province

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Agricultural Biotechnology 2019年第2期8卷 196-200,204页

作者： Qing CAI Fang LIU Chunlan LI Shixin CAO Binbin LIU Jingjing WANG shandong Institute of Geological Survey land quality geochemistry and pollution prevention engineering Technology research center of shandong Province Geological Environment Monitoring Master Station of shandong Province

Based on a comprehensive eco-geochemical survey of shandong Province, the differences in pesticide residue situation and contents of DDTs and HCHs in the soils of Yantai City and Southwest shandong Province(abbreviated as SSP) were studied in this paper. The results showed that the detection rates of DDTs and HCHs in the soil of SSP were apparently higher than Yantai City. However, the mean contents of DDTs and HCHs in the soil of Yantai were 9 and 25 times of SSP, respectively, and higher than the mean contents of many other cities and areas. p,p′-DDE was the main pesticide residual form in the soil of SSP. It is recognized as the degradation product of DDTs in oxidation environment in past, nevertheless, 5.52% of the soils in Yantai City still have a little of DDT input recently, which has posed a big impact on soil environment quality. β-HCH was the main form of the four isomers of HCHs in Yantai City, and α-HCH/γ-HCH in SSP was low. These reveal that the residual time of HCHs in the soils of both the two areas has a long period. After primary analysis, the risk of DDTs and HCHs in the soil of SSP is low, but DDTs in the soil of Yantai City still has a certain risk.

关键词： Soil Organochlorine pesticides Ecological risk Yantai City Southwest shandong Province

Potential Ecological Risks of Heavy Metals in Soils of shandong Peninsula Blue Economic Zone

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Agricultural Science & Technology 2019年第1期20卷 42-48页

作者： DAI Jie-rui shandong Institute of Geological Survey Shandong Engineering Research Center of Land Quality Geochemistry and PollutionPrevention Jinan 250013 PRC

In this research, soil samples were collected from shandong Peninsula Blue Economic Zone to investigate heavy metal pollutions in this region and to evaluate the potential ecological risks of heavy metal pollutants based on Hakanson Potential Ecological Risk Indexes. According to the results, Hg was the primary heavy metal pollutant in Blue Economic Zone, followed by Cd, Cu, and Pb as prevalent pollutants. Heavy metals ranked in order of their pollution degrees are: Hg>Cd>Cu>Pb>Zn>Cr>As;the potential ecological risks of heavy metals follow the order of Hg>Cd>As>Pb>Cu>Cr>Zn. Heavy metal pollutions did exist in this region to a certain extent, and the percentage of potential ecological risk in “strong” and “severe” degree reached up to 13.75%. This composite risk characteristic was subject to the restriction of Hg and Cd mainly distributed in Laizhou-Zhaoyuan- Yantai, Muping-Rushan Goldmine, and other densely-populated regions, threatening the safety production of crops. The combined effects of geological background and human activities, e.g. gold mining and domestic pollutants, were the main causes of high potential ecological risks of heavy metals in local environment.

关键词： Soil Heavy metal pollution Potential ecological risk shandong Peninsula Blue Economic Zone

Geochemical Characteristics and pollution Source Identification of the Near-surface Atmosphere Dust-fall in Jining City,Eastern China

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Agricultural Biotechnology 2019年第1期8卷 199-205页

作者： Jierui DAI shandong Institute of Geological Survey shandong engineering research center of land quality geochemistry and pollution prevention

Samples of near-surface atmosphere dust-fall and different pollution end-members were collected in the urban area of Jining City. The element characteristics of the near-surface atmosphere dust-fall and pollution end-members were analyzed systematically and the spatial distribution of the dust-fall and its pollution sources were studied. The results showed that the contents of elements varied obviously in different pollution end-members. The contents of As,Cd,Cu,F,Pb,S and Se within coal dust-fall were the highest,higher than those in atmosphere dust-fall and had great influences on the environment. The contents of Cd,Pb,Se,Zn,Hg and CaO within near-surface atmosphere dust-fall were affected by human activities to different degrees. Results of correlation analysis and factor analysis showed that Cd,Pb,Se and Zn mainly came from enterprise coal consumption,with a contribution ratio of 26. 32%. The contents of the above four elements near chemical factories,steel factories and high populated regions were generally high,which was consistent with the spatial distribution of the coal pollution *** was related to traffic pollution,with a contribution ratio of 10. 06%. Hg was mainly due to automobile emissions,with a contribution ratio of 8. 12%. The contents of As,Cr,F and Ni within dust-fall were seldom influenced by human activities and mainly came from soil sedimentation( natural sources),with a contribution ratio of 30%. The above four pollution sources( enterprise coal consumption,traffic pollution,automobile emissions and soil sedimentation) were the main sources of atmosphere dust-fall in Jining City. The enrichment coefficients of As,Cr,F and Ni were smaller and the spatial correlations of the four elements were better,while the enrichment coefficients and variable coefficients of elements influenced by human activities,such as Cd,Pb,Se and Hg were larger,and the spatial distributions of these elements were consistent with those of the pollution sources.

关键词： pollution end-member Atmosphere dust-fall Enrichment degree Factor analysis Jining City

research and Application of High-Density Resistivity Method in Seawater Intrusion Investigation in Laizhou Bay

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Agricultural Biotechnology 2023年第6期12卷 88-92页

作者： Yuhai HE Hongjin WANG Zengcai ZHAO Biao WANG Bin ZHANG Xiaodan WANG shandong Institute of Geophysical and Geochemical Exploration Jinan 250013China shandong engineering and Technology research center of Geological Exploration Jinan 250013China shandong Institute of Geological Surveying Jinan 250014China shandong engineering research center for geochemistry and pollution prevention and control of land quality Jinan 250014China

The disaster of seawater intrusion seriously affects people's lives and restricts economic development,so the detection and treatment of seawater intrusion is a long-term *** the basis of field investigation and water quality analysis,according to the change characteristics of apparent resistivity of groundwater after Cl-reaches 250 mg/L,the theoretical basis for the application of high-density resistivity method was determined,and the characteristic values of apparent resistivity for seawater intrusion interfaces in different geological characteristic regions in Laizhou Bay area were determined by typical profile *** with water quality investigation and other means,profiles for the high-density resistivity method were arranged,and the interfaces between saline and fresh water were accurately divided.

关键词： High-density resistivity method Seawater intrusion Laizhou Bay Characteristic value

Discussion on the Method of land quality Geochemical Evaluation Database : A Case Study of Diao Town and Xinzhai Town of Zhangqiu City

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Agricultural Biotechnology 2021年第2期10卷 107-112页

作者： Qing CAI shandong Institute of Geological Survey Jinan250013China land quality geochemistry and pollution Prevevtion engineering Technology research center of shandong Province Jinan 250013China

The land quality geochemical evaluation database was mainly based on soil geochemical *** its construction process,geochemical survey data involving atmospheric dry(wet)sediments,irrigation water,fertilizers and crops was simultaneously collected,analyzed and compiled into result maps using *** was used to manage standardized result data to establish an evaluation *** database included a basic spatial database involving regional geography,topography,soil type and land use,a spatial evaluation database centered on the sampling layout of the work areas of soil,irrigation water,crops and other media,the distribution and changes of soil chemical elements,the classification of soil pollution and the classification of soil element environment and nutrients,and an evaluation database of various result maps such as land planning map,characteristic agricultural product planting plan suggestion map and fertilization suggestion *** database realized the scientific and effective management of the samples and corresponding numerous laboratory analysis data,and provides basic information for the geochemical survey and evaluation of the land quality in the evaluation areas and the overall comprehensive research,and an important basis for promoting the adjustment of agricultural economic planning,the development of modern green agriculture and the development and utilization of high-quality characteristic land resources.

关键词： land quality Geochemical evaluation Database Zhangqiu City

Three-Dimensional Water quality Model Based on FVCOM for Total Load control Management in Guan River Estuary,Northern Jiangsu Province

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Journal of Ocean University of China 2016年第2期15卷 261-270页

作者： ZHANG Li LIN Weibo LI Keqiang SHENG Jianming WEI Aihong LUO Feng WANG Yan WANG Xiulin ZHANG Longjun Key Laboratory of Marine Chemistry Theory and Technology MOECollege of Chemistry and Chemical EngineeringOcean University of ChinaQingdao 266100P.R.China College of Environmental Science and engineering Ocean University of China Jiangsu Marine Environmental Monitoring Forecasting center Tidal Flat Research Center of Jiangsu

Guan River Estuary and adjacent coastal area(GREC) suffer from serious pollution and eutrophicational problems over the recent ***,reducing the land-based load through the national pollutant total load control program and developing hydrodynamic and water quality models that can simulate the complex circulation and water quality kinetics within the system,including longitudinal and lateral variations in nutrient and COD concentrations,is a matter of *** this study,a three-dimensional,hydrodynamic,water quality model was developed in GREC,Northern Jiangsu *** complex three-dimensional hydrodynamics of GREC were modeled using the unstructured-grid,finite-volume,free-surface,primitive equation coastal ocean circulation model(FVCOM).The water quality model was adapted from the mesocosm nutrients dynamic model in the south Yellow Sea and considers eight compartments:dissolved inorganic nitrogen,soluble reactive phosphorus(SRP),phytoplankton,zooplankton,detritus,dissolved organic nitrogen(DON),dissolved organic phosphorus(DOP),and chemical oxygen *** hydrodynamic and water quality models were calibrated and confirmed for 2012 and 2013.A comparison of the model simulations with extensive dataset shows that the models accurately simulate the longitudinal distribution of the hydrodynamics and water *** model can be used for total load control management to improve water quality in this area.

关键词： water quality model FVCOM total load control management Guan River Estuary Yellow Sea

Satellite-observed significant improvement in nearshore transparency of the Bohai Sea during pollution control

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Acta Oceanologica Sinica 2023年第12期42卷 51-62页

作者： Xuyan Li Jinzhao Xiang Liudi Zhu Zhibin Yang Ting Wei Bing Mu Xiaobo Zhang Tingwei Cui School of Atmospheric Sciences Sun Yat-Sen University/Key Laboratory of Tropical Atmosphere-Ocean SystemMinistry of Education/Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Faculty of Information Science and engineering Ocean University of ChinaQingdao 266071China

The Bohai Sea(BS)is the unique semi-closed inland sea of China,characterized by degraded water quality due to significant terrestrial pollution *** order to improve its water quality,a dedicated action named“Uphill Battles for Integrated Bohai Sea Management”(UBIBSM,2018–2020)was implemented by the Chinese *** evaluate the action effectiveness toward water quality improvement,variability of the satelliteobserved water transparency(Secchi disk depth,Z_(SD))was explored,with special emphasis on the nearshore waters(within 20 km from the coastline)prone to terrestrial influence.(1)Compared to the status before the action began(2011–2017),majority(87.3%)of the nearshore waters turned clear during the action implementation period(2018–2020),characterized by the elevated Z_(SD)by 11.6%±12.1%.(2)Nevertheless,the improvement was not spatially uniform,with higher Z_(SD)improvement in provinces of Hebei,Liaoning,and shandong(13.2%±16.5%,13.2%±11.6%,10.8%±10.2%,respectively)followed by Tianjin(6.2%±4.7%).(3)Bayesian trend analysis found the abrupt Z_(SD)improvement in April 2018,which coincided with the initiation of UBIBSM,implying the water quality response to pollution *** importantly,the independent statistics of land-based pollutant discharge also indicated that the significant reduction of terrestrial pollutant input during the UBIBSM action was the main driver of observed Z_(SD)improvement.(4)Compared with previous pollution control actions in the BS,UBIBSM was found to be the most successful one during the past 20 years,in terms of transparency improvement over nearshore *** presented results proved the UBIBSM-achieved remarkable water quality improvement,taking the advantage of long-term consistent and objective data record from satellite ocean color observation.

关键词： Secchi disk depth transparency water quality nearshore Bohai Sea satellite ocean color remote sensing pollution control