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Analysis and Evaluation of Heavy Metal Environmental Quality of Irrigation Water in Vegetable Farmlands of Shandong Province 被引量:7
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作者 刘苹 魏建林 +3 位作者 于淑芳 杨力 Jian-lin Shu-fang 《Agricultural Science & Technology》 CAS 2010年第5期165-167,186,共4页
[Objective] The aim was to evaluate heavy metal environmental quality of irrigation water in vegetable farmlands of Shandong Province. [Method] Heavy metal contents including Hg,Cd,As,Cr (+6),Pb,Cu and Zn in irrigatio... [Objective] The aim was to evaluate heavy metal environmental quality of irrigation water in vegetable farmlands of Shandong Province. [Method] Heavy metal contents including Hg,Cd,As,Cr (+6),Pb,Cu and Zn in irrigation water of main vegetable farmlands of Shandong Province were investigated by randomly sampling,and the environmental quality conditions of these heavy metals were evaluated by methods of single quality index and complex quality index. [Result] The results showed that the average contents of heavy metals in irrigation water of Shouguang,Laiyang,Jinxiang and Zhangqiu were all far lower than the limit values prescribed by 'Farmland Environmental Quality Evaluation Standards for Edible Agricultural Products' (HJ332-2006),and no heavy metal was found beyond the limit value in every sample. The single quality indices of the 7 elements in the studied 4 places were all lower than 0.5. The comprehensive quality index of the seven elements was 0.317 8 in Shouguang,0.320 4 in Laiyang,0.232 6 in Jinxiang,and 0.260 7 in Zhangqiu. The environmental quality of irrigation water in the studied four places were all set at the first class. [Conclusion] The environmental quality of irrigation water in the 4 places belonged to clean level and were fit for the plantation of no pollution vegetables. 展开更多
关键词 Vegetable irrigation water Heavy metal environmental quality
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Applying PP Model Based on RAGA in Water Environment Quality Evaluation
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作者 PANFeng FUQiang +1 位作者 LIANGChuan LIUDong 《Journal of Northeast Agricultural University(English Edition)》 CAS 2004年第2期171-175,共5页
Projection Pursuit (PP) model is a technique of falling high dimension. Real coding based on Accelerating Genetic Algorithm (RAGA) is a method of optimum. Through combining the PP model and RAGA, the paper applies the... Projection Pursuit (PP) model is a technique of falling high dimension. Real coding based on Accelerating Genetic Algorithm (RAGA) is a method of optimum. Through combining the PP model and RAGA, the paper applies the model in the water environment quality evaluation. The writer takes the water quality evaluated indexes of each sample as projection direction and turns high dimension data into low dimension projection value. Thus, the writer achieves on evaluating the grade of water samples and its optimum order. Based on this, the writer overcomes the jamming of weights calculated on fuzzy synthesize judge and gray system valuation. The paper can provide a new thought for water environment quality evaluation and other falling high dimension and optimum issue. 展开更多
关键词 RAGA PP model water environment quality evaluation
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Investigation and Evaluation on Water Environment Quality of Xiawan Reservoir and Its Adjacent Waters in Zhaoqing
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作者 Jianqiao QIN Lizhi LIANG +1 位作者 Dongni YU Jiali HUANG 《Meteorological and Environmental Research》 CAS 2021年第2期38-42,共5页
Town Planning Board of Zhaoqing passed the Planning and Design of Xiawan Urban Wetland Park in Zhaoqing City in 2012,and Xiawan Reservoir,located at the junction of Duanzhou District and Dinghu District,would be built... Town Planning Board of Zhaoqing passed the Planning and Design of Xiawan Urban Wetland Park in Zhaoqing City in 2012,and Xiawan Reservoir,located at the junction of Duanzhou District and Dinghu District,would be built into a wetland park at that time.To understand water quality status near the wetland park,according to relevant requirements of the Technical Guidelines for Environmental Impact Assessment:Surface Water Environment(HJ/T 2.3-93),the Environmental Quality Standards for Surface Water(GB 3838-2002),and the Technical Specification for Environmental Monitoring issued by the State Environmental Protection Administration,Xiawan Reservoir,Houlichong and the Xijiang River were investigated,monitored and evaluated. 展开更多
关键词 Xiawan Reservoir water environment quality Investigation and evaluation
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Hydrochemical characteristics and water quality evaluation of shallow groundwater in Suxian mining area,Huaibei coalfield,China 被引量:5
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作者 Hao Yu Herong Gui +5 位作者 Honghai Zhao Meichen Wang Jun Li Hongxia Fang Yaqi Jiang Yaru Zhang 《International Journal of Coal Science & Technology》 EI CAS 2020年第4期825-835,共11页
The aim of this study is to evaluate the hydrogeochemical characteristics and water environmental quality of shallow groundwater in the Suxian mining area of Huaibei coalfield,China.The natural formation process of sh... The aim of this study is to evaluate the hydrogeochemical characteristics and water environmental quality of shallow groundwater in the Suxian mining area of Huaibei coalfield,China.The natural formation process of shallow groundwater in Suxian is explored using Piper trilinear charts and Gibbs diagrams,and by examining the ratios between the major ions.United States Salinity Laboratory(USSL)charts,Wilcox diagrams,and the water quality index(WQI)are further employed to quantify the differences in water quality.The results reveal that the main hydrochemical facies of groundwater are HC03-Ca,and that silicate dissolution is the main factor controlling the ion content in shallow groundwater.The USSL charts and Wilcox diagrams show that most of the water samples would be acceptable for use in irrigation systems.The WQI results for each water sample are compared and analyzed,and the quality of groundwater samples around collapse ponds is found to be relatively poor. 展开更多
关键词 Shallow groundwater Hydrochemical characteristics water-rock interaction Evaluation of water environment quality Suxian mining area
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Study on Regulating Effects of "Aquatic Environment Protection Oriented Fishery" on Water Environment of Qiaodun Reservoir
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作者 Yuan Julin Gu Zhimin +2 位作者 Yang Yuanjie Xin Jianmei Liu Jindian 《Meteorological and Environmental Research》 CAS 2014年第9期47-52,共6页
In order to evaluate the regulating effect of " aquatic environment protection oriented fishery" on aquatic ecosystem,the water quality,plankton community structure,biomass,diversity index,eutrophication index and e... In order to evaluate the regulating effect of " aquatic environment protection oriented fishery" on aquatic ecosystem,the water quality,plankton community structure,biomass,diversity index,eutrophication index and ecosystem maturity evaluated with Ecopath model were compared from 2010 to 2012 in Qiaodun Reservoir of Zhejiang Province. It was indicated that the water quality had been improved obviously. The water transparency maximally increased by 130%,while TP,TN and CODCrwere reduced. The density and biomass of the plankton were decreased,so was the ratio of Cynobacteria in phytoplankton community. The Shannon-Weaver index was increased; the trophic level was decreased; the ecosystem maturity was improved. By all accounts,the " aquatic environment protection oriented fishery" had positive effects on maintaining the balance of reservoir ecosystem and ensuring the safety of drinking water. 展开更多
关键词 Aaquatic environment protection oriented fishery" water quality Plankton community Ecosystem maturity Ecopath model China
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Evaluation on Environment State of Breeding Area in Shuidong Bay by Using Fuzzy Comprehensive Evaluation Method 被引量:1
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作者 XU Yonghua 1,and SUN Yong 2 1 Heilongjiang Agriculture Polytechnic University,Jiamusi 154007,Heilongjiang,China 2 Engineering College,Northeast Agricultural University,Harbin 150030,China 《Journal of Northeast Agricultural University(English Edition)》 CAS 2010年第2期64-68,共5页
Fuzzy comprehensive evaluation method was used to develop a standard model to analyze and evaluate nearness degree of water environment quality at breeding area of Shuidong Bay in China.Results showed that certain env... Fuzzy comprehensive evaluation method was used to develop a standard model to analyze and evaluate nearness degree of water environment quality at breeding area of Shuidong Bay in China.Results showed that certain environment contamination factors in some areas seriously exceeded the standard value and led to the whole water quality at the third class level.The measurements should be taken to promote the sustainable development of breeding area in Shuidong Bay. 展开更多
关键词 fuzzy comprehensive evaluation method nearness degree water environment quality
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Determination of water environment standards based on water quality criteria in China:Limitations and feasibilities 被引量:2
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作者 Tieyu Wang Yunqiao Zhou +3 位作者 Cencen Bi Yonglong Lu Guizhen He John P.Giesy 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2017年第7期127-136,共10页
There is a need to formulate water environment standards(WESs) from the current water quality criteria(WQC) in China.To this end,we briefly summarize typical mechanisms applied in several countries with longer his... There is a need to formulate water environment standards(WESs) from the current water quality criteria(WQC) in China.To this end,we briefly summarize typical mechanisms applied in several countries with longer histories of developing WESs,and three limitations to formulating WESs in China were identified.After analyzing the feasibility factors including economic development,scientific support capability and environmental policies,we realized that China is still not ready for a complete change from its current nation-wide unified WES system to a local-standard-based system.Thus,we proposed a framework for transformation from WQC to WESs in China.The framework consists of three parts,including responsibilities,processes and policies.The responsibilities include research authorization,development of guidelines,and collection of information,at both national and local levels;the processes include four steps and an impact factor system to establish water quality standards;and the policies include seven specific proposals. 展开更多
关键词 water quality environmental criteria Standards Regulations
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Synergetic pathways of water-energy-carbon in ecologically vulnerable regions aiming for carbon neutrality:a case study of Shaanxi,China
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作者 Yingying Liu Hanbing Li +6 位作者 Sha Chen Lantian Zhang Sumei Li He Lv Ji Gao Shufen Cui Kejun Jiang 《Frontiers of Environmental Science & Engineering》 SCIE EI CSCD 2024年第9期1-15,共15页
Synergetic energy-water-carbon pathways are key issues to be tackled under carbon-neutral target and high-quality development worldwide,especially in ecologically vulnerable regions(EVRs).In this study,to explore the ... Synergetic energy-water-carbon pathways are key issues to be tackled under carbon-neutral target and high-quality development worldwide,especially in ecologically vulnerable regions(EVRs).In this study,to explore the synergistic pathways in an EVR,a water-energy-carbon assessment(WECA)model was built,and the synergistic effects of water-energy-carbon were comprehensively and quantitatively analyzed under various scenarios of regional transition.Shaanxi Province was chosen as the representative EVR,and Lower challenge(LEC)and Greater challenge(GER)scenarios of zerocarbon transition were set considering the technological maturity and regional energy characteristics.The results showed that there were limited effects under the zero-carbon transition of the entire region on reducing water withdrawals and improving the water quality.In the LEC scenario,the energy demand and CO_(2) emissions of Shaanxi in 2060 will decrease by 70.9%and 99.4%,respectively,whereas the water withdrawal and freshwater aquatic ecotoxicity potential(FAETP)will only decrease by 8.9%and 1.6%,respectively.This could be attributed to the stronger demand for electricity in the energy demand sector caused by industrial transition measures.The GER scenario showed significant growth in water withdrawals(16.0%)and FAETP(36.0%)because of additional biomass demand.To promote the synergetic development of regional transition,EVRs should urgently promote zero-carbon technologies(especially solar and wind power technologies)between 2020 and 2060 and dry cooling technology for power generation before 2030.In particular,a cautious attitude toward the biomass energy with carbon capture and storage technology in EVRs is strongly recommended. 展开更多
关键词 Carbon neutrality water withdrawals water environment quality Ecologically vulnerable region Typical regional transition
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Industrial development and land use/cover change and their effects on local environment:a case study of Changshu in eastern coastal China 被引量:14
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作者 Yurui LI Hualou LONG Yansui LIU 《Frontiers of Environmental Science & Engineering》 SCIE EI CSCD 2010年第4期438-448,共11页
The interactions among industrial development,land use/cover change (LUCC), and environmentaleffects in Changshu in the eastern coastal China wereanalyzed using high-resolution Landsat TM data in 1990,1995, 2000, and ... The interactions among industrial development,land use/cover change (LUCC), and environmentaleffects in Changshu in the eastern coastal China wereanalyzed using high-resolution Landsat TM data in 1990,1995, 2000, and 2006, socio-economic data and waterenvironmental quality monitoring data from researchinstitutes and governmental departments. Three phases ofindustrial development in Changshu were examined (i.e.,the three periods of 1990 to 1995, 1995 to 2000, and 2000to 2006). Besides industrial development and rapidurbanization, land use/cover in Changshu had changeddrastically from 1990 to 2006. This change was characterizedby major replacements of farmland by urban and ruralsettlements, artificial ponds, forested and constructed land.Industrialization, urbanization, agricultural structureadjustment, and rural housing construction were themajor socio-economic driving forces of LUCC inChangshu. In addition, the annual value of ecosystemservices in Changshu decreased slightly during 1990-2000, but increased significantly during 2000-2006.Nevertheless, the local environmental quality in Changshu,especially in rural areas, has not yet been improvedsignificantly. Thus, this paper suggests an increasedattention to fully realize the role of land supply inadjustment of environment-friendly industrial structureand urban-rural spatial restructuring, and translating theland management and environmental protection policiesinto an optimized industrial distribution and land-use pattern. 展开更多
关键词 industrial development land use/cover change(LUCC) driving forces environmental effects ecosystem services value(ESV) water environmental quality Changshu
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