Article
Environmental Sciences
Wanzhou Wang, Njagi Felix Mwiathi, Chengcheng Li, Wenting Luo, Xin Zhang, Yonghui An, Mengnan Zhang, Peili Gong, Juanjuan Liu, Xubo Gao
Summary: By modifying the DRASTIC model, this study established an AHP-DRASTICH model to assess the vulnerability of groundwater to fluoride contamination. Application in the Yuncheng basin in northern China showed that areas with higher vulnerability were mainly located in the central part, which is crucial for protecting groundwater from fluoride pollution.
Article
Environmental Sciences
Shou Wang, Jing Chen, Wei Jiang, Shuxuan Zhang, Ran Jing, Shengyun Yang
Summary: Understanding groundwater formation and evolution is crucial for water resource exploitation. This study used hydrochemistry and stable isotope tracing techniques to determine the key factors influencing groundwater chemical evolution in Feng County. The results showed that groundwater is primarily recharged from atmospheric precipitation, with dominant cations including Na+ and Mg2+, and dominant anions including HCO3- and SO42-. The groundwater hydrochemical facies are mainly HCO3-Ca-Mg and SO4-Cl-Na types, controlled by water-rock interaction and cation exchange reactions. In addition to natural sources, human activities also contribute to the enrichment of fluoride ions in shallow groundwater.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Microbiology
Zhonglin Ma, Long Gao, Mingxue Sun, Yongjie Liao, Shijie Bai, Zijun Wu, Jiangtao Li
Summary: This study investigated the microbial communities in the aquifers of the coastal area of Beihai City in China and found that seawater intrusion is one of the primary factors shaping the bacterial composition of groundwater in this area. Additionally, the structure of microbial communities is influenced by the extent of seawater intrusion and shows spatial heterogeneity.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Environmental Sciences
Xianglong Chen, Guangcai Wang, Yizhi Sheng, Fu Liao, Hairu Mao, Bo Li, Hongyu Zhang, Zhiyuan Qiao, Jiahui He, Yingxue Liu, Yilun Lin, Ying Yang
Summary: Nitrate and ammonia overload in groundwater can cause eutrophication of surface water in regions where surface water is recharged by groundwater. The complex interaction between hydrogeochemical conditions and N-cycling microbial communities governs the groundwater N cycling process, making it difficult to understand. A study in Ganjing Delta, Poyang Lake area, China, revealed that as groundwater flows from recharge to discharge areas near the lake, the levels of oxidation-reduction potential, NO3-N, and NO2-N decrease, while NH3-N, total organic carbon (TOC), Fe2+, sulfide, and TOC/NO3- ratio increase. Anthropogenic influences, such as sewage and agricultural activities, drive the distribution of nitrate in the groundwater.
Review
Genetics & Heredity
Sara Shakir, Syed Shan-e-Ali Zaidi, Franciska T. de Vries, Shahid Mansoor
Summary: The phyllosphere microbial communities interact with host plants through complex molecular interactions, with researchers exploring how the host genotype shapes these communities and seeking stable and well-adapted microbiomes. Understanding the assembly and function of phyllosphere microbiomes is crucial for harnessing them to improve plant growth and health in managed systems.
TRENDS IN GENETICS
(2021)
Article
Environmental Sciences
Jiutan Liu, Yuanyuan Ma, Zongjun Gao, Yuqi Zhang, Zengbing Sun, Tianzhu Sun, Haibin Fan, Bin Wu, Mingbo Li, Lili Qian
Summary: Using GIS, this study analyzed the spatial variation characteristics of groundwater fluoride in Weifang City and evaluated the health risks associated with drinking water. The concentration of fluoride in the groundwater exceeded China's standards in certain areas, mostly influenced by rock weathering and seawater intrusion. Health risk assessment showed that infants face the highest health risk while adults face the lowest risk.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Xing Chen, Chunlu Jiang, Liugen Zheng, Liqun Zhang, Xianjie Fu, Shigui Chen, Yongchun Chen, Jie Hu
Summary: This study is the first attempt to combine hydrochemical, isotope, and multivariate statistical analysis methods to explore the origin, control, and influence of fluoride enrichment in mining cities. The results show that mineral dissolution, cation exchange, and evaporation are the main driving processes for groundwater salinization in the study area, with mine drainage inputs exacerbating the increasing salinity of the groundwater.
ENVIRONMENTAL POLLUTION
(2021)
Article
Engineering, Environmental
Katarina Kajan, Helena Osterholz, James Stegen, Marija Gligora Udovic, Sandi Orlic
Summary: Lakes play a crucial role in the global carbon cycle, and understanding the interactions between microbial and dissolved organic matter (DOM) diversity is essential for predicting the function of lake ecosystems. This study used high-throughput sequencing and mass spectrometry to investigate the structure and patterns of DOM and microbial communities in six lakes. The results showed a strong correlation between molecular-level DOM diversity and the diversity of microbial communities, indicating a dynamic feedback mechanism. The study also found that deterministic assembly processes governed DOM composition, while microbial community composition was highly variable across lakes with different environmental conditions. Overall, understanding the coupling between DOM and microbial communities is important for predicting future lake ecology and function.
Article
Geosciences, Multidisciplinary
Jia Huang, Lianhai Cao, Furong Yu, Xiaobo Liu, Lei Wang
Summary: The study revealed the importance of understanding the groundwater drought cycle for comprehensively grasping the development characteristics of groundwater drought, which is vital for the development, utilization, and protection of groundwater.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Engineering, Environmental
Sandrine Veloso, David Amouroux, Laurent Lanceleur, Christine Cagnon, Mathilde Monperrus, Jonathan Deborde, Cristiana Cravo Laureau, Robert Duran
Summary: The fluctuation of environmental conditions in estuaries drives the structure of microbial communities, which play a key role in ecosystem functioning. In this study, the microbial communities in the Adour Estuary were investigated using gene sequencing and chemical analysis. The results showed a strong seasonal organization and spatial distribution of microbial communities, influenced by biogeochemical parameters and micropollutants. Network analysis revealed specific modules linked to pollutant types, providing important insights into estuarine microbial ecology.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Environmental Sciences
Mingjie Xu, Kuankuan Zhang, Yiduo Wang, Bin Zhang, Kang Mao, Hua Zhang
Summary: In industrial site groundwater, heavy metal pollution is common and harmful to the environment and human health. This study focuses on the relationships between heavy metal concentration, health risks, and microbial community distribution in polluted groundwater in Hezhou City, China. The research utilizes a recommended health risk assessment model and high-throughput sequencing technology. The results demonstrate varying levels of heavy metal pollution in different monitoring wells and significant carcinogenic and noncarcinogenic risks to human health. The study also highlights the presence of particular bacteria with tolerances to heavy metal pollution and variations in microbial community composition caused by different types and concentrations of heavy metal contamination.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2023)
Article
Environmental Sciences
Liwen Huang, Ziyong Sun, Aiguo Zhou, Junbo Bi, Yunde Liu
Summary: This study investigated the distribution characteristics and controlling processes of fluoride enrichment in groundwater in arid inland irrigated areas. The results showed that fluoride concentration in groundwater was generally high and positively correlated with salinity. River water was identified as the main source of fluoride in groundwater, and anthropogenic inputs were found to contribute to fluoride enrichment.
ENVIRONMENTAL POLLUTION
(2022)
Article
Multidisciplinary Sciences
Biao Zhao, Xu Xi
Summary: Administrative division plays an important role in promoting urbanization and economic growth in China. This study examines the impact of converting counties into municipal districts on economic growth using panel data from 1998 to 2016. The results demonstrate that this conversion significantly promotes economic growth, especially in larger cities. However, in smaller cities, the conversion may have a negative impact on economic development. Additionally, the reform in eastern and central regions shows more significant effects compared to western and northeast regions. The study suggests that the optimal range of development intensity for municipal districts is between 15% and 20%.
Article
Environmental Studies
Dingpan Chen, Yuzhe Wu, Zhou Lin, Zhiyi Xu
Summary: Shrinkage in China's cities is receiving more attention, and there are numerous county-level shrinking cities in Zhejiang Province. City shrinkage is the result of various factors, including declining traditional industries and population structure changes. In response to this phenomenon, we proposed several countermeasures and suggestions.
Article
Genetics & Heredity
Karine Villeneuve, Michel Violette, Cassandre Sara Lazar
Summary: Groundwater recharge and discharge rates and zones have a significant impact on the microbial community of aquifer systems. This study used gene sequencing to analyze the microbial composition in various aquifers and found distinct community variations between different geological characteristics. The study also revealed little contribution from surface recharge to groundwater communities and vice versa, highlighting the need for further in-depth temporal studies to understand the connectivity between surface and subsurface microbiomes.
Article
Green & Sustainable Science & Technology
Seema Anjum Khattak, Abdur Rashid, Muhammad Tariq, Liaqat Ali, Xubo Gao, Muhammad Ayub, Asif Javed
Summary: The study identified high mercury concentration in groundwater in District Swabi, Pakistan, with most samples exceeding the WHO recommended limit. The findings suggest potential health risks for the local residents.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2021)
Review
Environmental Sciences
Chengcheng Li, Xubo Gao, Siqi Li, Jochen Bundschuh
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2020)
Review
Green & Sustainable Science & Technology
Chunfang Jiang, Xubo Gao, Baojun Hou, Songtao Zhang, Jianyou Zhang, Chengcheng Li, Wanzhou Wang
JOURNAL OF CLEANER PRODUCTION
(2020)
Article
Environmental Sciences
Liaqat Ali, Abdur Rashid, Seema Anjum Khattak, Xubo Gao, Shah Jehan, Asif Javed
Summary: The study aimed to assess the contamination of potentially toxic metals in the sediment of the Chitral River in Pakistan. Statistical tools were used to analyze the origin and exposure level of PTMs, identifying PB, Ni, Cu, Co, Cr, and Zn as major contaminants in the area. The results highlighted the ecological risk posed by these metals and the dominance of geogenic contamination in the study area.
INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
(2021)
Article
Engineering, Civil
Chengcheng Li, Xubo Gao, Wanzhou Wang, Xin Zhang, Xiaobo Zhang, Chunfang Jiang, Yanxin Wang
Summary: This study investigated surface water leakage and anthropogenic inputs into karst groundwater in the Jinci karst system. The results showed that groundwater along the Fenhe River has been affected by oxygen and hydrogen enrichment, anthropogenic components, and nutrient leakage from surface water, leading to changes in the microbial community of the groundwater. The hydrogeochemical evolution in the study area is mainly controlled by dissolution of calcite, dolomite with gypsum, and dedolomitization, with contributions from coal mine drainage and unregulated disposal of domestic sewage.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
Xiao Wu, Xubo Gao, Ting Tan, Chengcheng Li, Ruyao Yan, Zeyong Chi, Yu Feng, Peili Gong, Jiancong Fang, Xingzhou Zhang, Kaisaerjiang Aihemaiti, Dong Xu
Summary: This study investigated the pollution of polycyclic aromatic hydrocarbons in karst water in the Liulin karst water system of northern China, revealing that the main sources are local combustion of fuels and surface runoff. The concentration of polycyclic aromatic hydrocarbons in karst water gradually increased along the flow path, with the highest concentrations observed in coal mining and discharge areas. The study suggests a new technical method for tracing the sources and pollution paths of organic pollution in karst water systems.
JOURNAL OF CONTAMINANT HYDROLOGY
(2021)
Article
Environmental Sciences
Wanzhou Wang, Njagi Felix Mwiathi, Chengcheng Li, Wenting Luo, Xin Zhang, Yonghui An, Mengnan Zhang, Peili Gong, Juanjuan Liu, Xubo Gao
Summary: By modifying the DRASTIC model, this study established an AHP-DRASTICH model to assess the vulnerability of groundwater to fluoride contamination. Application in the Yuncheng basin in northern China showed that areas with higher vulnerability were mainly located in the central part, which is crucial for protecting groundwater from fluoride pollution.
Article
Environmental Sciences
Njagi Felix Mwiathi, Xubo Gao, Chengcheng Li, Abdur Rashid
Summary: The study focuses on the occurrence and origins of high-fluoride groundwater in regions with volcanic bedrocks, using Kenya Rift Valley as a case study. It finds that fluoride in groundwater is mainly derived from the weathering of volcanic rocks, which leads to high fluoride concentrations in shallow groundwater. The alkaline condition and clay minerals play a crucial role in controlling fluoride release and accumulation in these groundwater systems.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Engineering, Civil
Chengcheng Li, Xubo Gao, Xin Zhang, Yanxin Wang, Ken Howard
Summary: This study applies integrated hydrogeochemical parameters and multiple isotopes to investigate the sources, evolutions, and solubilization of fluoride and arsenic in deep groundwater in the Yuncheng Basin, northern China. The results show that over 80% of the deep samples have elevated levels of fluoride and/or arsenic above the WHO guideline values. Different types of deep groundwater have distinct characteristics, with deep saline water influenced by paleoclimate. The ionic ratios and isotopic compositions reveal the sources of solutes in deep aquifers and the effects of vertical leakage on the evolution of deep groundwater.
JOURNAL OF HYDROLOGY
(2022)
Article
Environmental Sciences
Abdur Rashid, Muhammad Ayub, Zahid Ullah, Asmat Ali, Seema Anjum Khattak, Liaqat Ali, Xubo Gao, Chengcheng Li, Sardar Khan, Hamed A. El-Serehy, Prashant Kaushik
Summary: Contamination of groundwater by potentially harmful elements (PHEs), originating from the weathering of rock, poses a global public health concern. This study investigated the distribution, source, speciation, and health hazard of PHEs in the groundwater system and mine water of the Adenzai flood plain region in Pakistan, using the human health risk assessment (HHRA) model. The findings suggest that remedial measures are needed to ensure health safety and address public health concerns regarding groundwater sources.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2022)
Article
Geochemistry & Geophysics
Changsuo Li, Xingzhou Zhang, Xubo Gao, Chengcheng Li, Chunfang Jiang, Wen Liu, Guangqi Lin, Xin Zhang, Jiancong Fang, Lijun Ma, Xiubo Zhang
Summary: This study investigates the factors and processes leading to karst water quality degradation through a hydrogeochemical investigation and modeling. The main findings include the influence of human activities and global changes on the degradation of karst water quality.
Article
Environmental Sciences
Abdur Rashid, Muhammad Ayub, Sardar Khan, Zahid Ullah, Liaqat Ali, Xubo Gao, Chengcheng Li, Hamed A. El-Serehy, Prashant Kaushik, Atta Rasool
Summary: This study evaluates the presence of potentially toxic elements (PTEs) and bacterial contamination in groundwater in the Hindukush ranges of Pakistan, assessing their health hazards and impact using various analysis methods.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Dawei Cai, Shuqiong Kong, Yixian Shao, Juanjuan Liu, Ruiqi Liu, Xiaguo Wei, Bing Bai, David Werner, Xubo Gao, Chengcheng Li
Summary: Irrigation activities can cause fluctuations in the unsaturated zone and affect the migration and transformation of arsenic. The study found that the release of arsenic is influenced by exogenous substances, redox conditions, and intermittent flow.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Geochemistry & Geophysics
Peili Gong, Chengcheng Li, Qianqian Yi, Xubo Gao, Chong Dai, Jiangkun Du, Juanjuan Liu, Xin Zhang, Yan Duan, Ting Tan, Shuqiong Kong
Summary: Mg-calcite has a higher adsorption capacity for arsenic (As), especially for As(III). The adsorption mechanisms of Mg-calcite include the substitution of CO3/OH groups with As-O groups and the formation of complexes on the surface. The doping of Mg results in lattice contraction and provides additional space for larger As oxyanions to replace carbonate ions. Additionally, Mg presence increases the density of surface positive charges, promoting the adsorption of negatively charged As.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Environmental Sciences
Chengcheng Li, Jochen Bundschuh, Xubo Gao, Yong Li, Xin Zhang, Wenting Luo, Zhendong Pan
Summary: This study investigates the occurrence and speciation of arsenic in groundwater and sediments in Qiji county, as well as the mechanisms responsible for arsenic mobilization. The results show that arsenic concentrations in groundwater exceed the maximum permissible limits for drinking water, posing a health risk to humans. The high arsenic content in sediments and the release of arsenic due to irrigation intensity highlight the need for systematic management and regulation to prevent further deterioration of groundwater resources.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
