China Geology最新文献

{"title":"Preface to the special issue dedicated to the 37th International Geological Congress","authors":"Zi-guo Hao (Editor-in-Chief)","doi":"10.31035/cg2024083","DOIUrl":"10.31035/cg2024083","url":null,"abstract":"","PeriodicalId":45329,"journal":{"name":"China Geology","volume":"7 3","pages":"Page 381"},"PeriodicalIF":4.6,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419189","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Contamination assessment, source apportionment and associated health risks of PTEs in agricultural soil under five land-use patterns in Sanya, China","authors":"Jian-zhou Yang ,&nbsp;Yan-gang Fu ,&nbsp;Qiu-li Gong ,&nbsp;Sheng-ming Ma ,&nbsp;Jing-jing Gong ,&nbsp;Jian-weng Gao ,&nbsp;Zhenliang Wang ,&nbsp;Yong-wen Cai ,&nbsp;Shi-xin Tang","doi":"10.31035/cg2023078","DOIUrl":"10.31035/cg2023078","url":null,"abstract":"<div><div>To understand the levels of potentially toxic elements (PTEs) contamination in soils and their effects on human health from different agricultural land use in Sanya, China. 128 soil samples (64 topsoil samples and corresponding subsoil samples) were collected from the five representative land-use patterns. Inductively coupled plasma mass spectrometry (ICP-MS), Atomic fluorescence spectrometry (AFS), and Inductively coupled plasma optical emission spectrometry (ICP-OES) were used to determine the content of PTEs (As, Cd, Hg, Cu, Cr, Ni, Pb, Zn, Co, Mo, Sb, and V). Correlation analysis and factor analysis were used to determine the source of PTEs. Geo-accumulation index (<em>I</em>_geo), hazard quotient (HQ), and total carcinogenic risk index (TR) were used to measure the PTEs contamination and its relative health impacts. Results showed that the average values of 12 PTEs in topsoil were higher than the Hainan soil geochemical baseline, showing different degrees of PTEs accumulation effect. The concentration of PTEs in the topsoil was lower than those in the subsoil except for Cd and Hg. The <em>I</em>_geo revealed that the major accumulated element in soils was As followed by Mo. Source apportionment suggested that parent materials and agricultural practices were the dominant factors for PTEs accumulation in the topsoil. Non-carcinogenic risks of soil samples from five land-use patterns presented a trend of paddy field &gt; dry field &gt; woodland &gt; orchard &gt; garden plot. However, the HQ values of 12 PTEs were less than the recommended limit of HQ = 1, representing that there are no non-carcinogenic risks of PTEs for children and adults in the study area. The TR values are within 6.95×10^–6–1.38×10^–5, which corresponds to the low level. Therefore the PTEs in the agricultural soil of the study area show little influence on the health status of the local population.</div></div>","PeriodicalId":45329,"journal":{"name":"China Geology","volume":"7 3","pages":"Pages 469-479"},"PeriodicalIF":4.6,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Desert ecological control and ecological industrial construction: Practice and inspiration from China","authors":"Xue-zheng Gao ,&nbsp;Lu Liu ,&nbsp;Yun-tao Shang ,&nbsp;Fan-yu Qi","doi":"10.31035/cg2024081","DOIUrl":"10.31035/cg2024081","url":null,"abstract":"","PeriodicalId":45329,"journal":{"name":"China Geology","volume":"7 3","pages":"Pages 596-604"},"PeriodicalIF":4.6,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419128","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Eco-toxicity and health risk assessment of polycyclic aromatic hydrocarbons in surface sediments of Burullus Lake in Egypt","authors":"Hanan E Osman ,&nbsp;Mohamed H E El-Morsy ,&nbsp;Hazem T Abd El-Hamid","doi":"10.31035/cg2024065","DOIUrl":"10.31035/cg2024065","url":null,"abstract":"<div><div>Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous environmental contaminants of growing concern due to their potential ecological and human health risks. This study presents a comprehensive assessment of PAHs contamination in the surface sediments of Burullus Lake, a vital and second largest delta lake in Egypt. The aim was to evaluate the eco-toxicity and potential health risks associated with the presence of these compounds. Surface seven sediment samples were collected from various drains in the southern part of Burullus Lake. Soxhlet extraction method was employed to extract PAHs (16PAHs) from the sediment sample. Analytically, target compounds were located using HPLC. The results showed that samples contained PAHs levels ranging from 0.038×10^–6 to 0.459×10^–6, which is considered heavily polluted by the European standard for PAHs pollution. Additionally, there was no apparent source of PAHs in the El-Khashah drain or the Brinbal Canal, as HPLC found none of the compounds. The most prevalent compound in sediment samples along the study area was fluoranthene. The diagnostic indices in the present study indicated that the hydrocarbons in the region originated from pyrolytic and man-made sources along the drains of Burullus Lake. The principal component analysis (PCA) and diagnostic ratios revealed that coal combustion and pyrolytic sources were responsible for the PAHs contamination in the surface sediments. The non-carcinogenic risk (<em>HI</em>), which is the product of the <em>HQs</em> for the adult and child populations, respectively, was calculated. <em>HI</em> values under 1, therefore, demonstrated that they had no carcinogenic effects on human health. <em>TEQs</em> and <em>MEQs</em> in the sediments of Burullus Lake do not have a cancer-causing impact on people. For the safety of nearby wildlife, aquatic life, and people, all activities that raise petroleum hydrocarbon levels in Burullus Lake must be adequately regulated and controlled. According to the ecological risk assessment, there is little chance that PAHs will be found in the sediments of Burullus Lake. This study underscores the urgent need for effective pollution control measures and regular monitoring of PAHs levels in Burullus Lake sediments to protect the aquatic ecosystem and public health. It also highlights the importance of considering eco-toxicity and human health risks in integrated risk assessments of PAHs-contaminated environments.</div></div>","PeriodicalId":45329,"journal":{"name":"China Geology","volume":"7 3","pages":"Pages 460-468"},"PeriodicalIF":4.6,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimization of water-urban-agricultural-ecological land use pattern: A case study of Guanzhong Basin in the southern Loess Plateau of Shaanxi Province, China","authors":"","doi":"10.31035/cg2022068","DOIUrl":"10.31035/cg2022068","url":null,"abstract":"<div><div>Extensive land use will cause many environmental problems. It is an urgent task to improve land use efficiency and optimize land use patterns. In recent years, due to the flow decrease, the Guanzhong Basin in Shaanxi Province is confronted with the problem of insufficient water resources reserve. Based on the Coupled Ground-Water and Surface-Water Flow Model (GSFLOW), this paper evaluates the response of water resources in the basin to changes in land use patterns, optimizes the land use pattern, improves the ecological and economic benefits, and the efficiency of various spatial development, providing a reference for ecological protection and high-quality development of the Yellow River Basin. The research shows that the land use pattern in the Guanzhong Basin should be further optimized. Under the condition of considering ecological and economic development, the percentage change of the optimum area of farmland, forest, grassland, water area, and urban area compared with the current land use area ratio is +2.3, +2.4, −6.1, +0.2, and +1.6, respectively. The economic and ecological value of land increases by 14.1% and 3.1%, respectively, and the number of water resources can increase by 2.5%.</div></div>","PeriodicalId":45329,"journal":{"name":"China Geology","volume":"7 3","pages":"Pages 480-493"},"PeriodicalIF":4.6,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135549712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Risk assessment of coastal flooding disaster by storm surge based on Elevation-Area method and hydrodynamic models: Taking Bohai Bay as an example","authors":"Fu Wang ,&nbsp;Xue-zheng Liu ,&nbsp;Yong Li ,&nbsp;Heng Yu ,&nbsp;Ming-zheng Wen ,&nbsp;Yun-zhuang Hu","doi":"10.31035/CG2024074","DOIUrl":"10.31035/CG2024074","url":null,"abstract":"<div><div>The future inundation by storm surge on coastal areas are currently ill-defined. With increasing global sea-level due to climate change, the coastal flooding by storm surge is more and more frequently, especially in coastal lowland with land subsidence. Therefore, the risk assessment of such inundation for these areas is of great significance for the sustainable socio-economic development. In this paper, the authors use Elevation-Area method and Regional Ocean Model System (ROMS) model to assess the risk of the inundation of Bohai Bay by storm surge. The simulation results of Elevation-Area method show that either a 50-year or 100-year storm surge can inundate coastal areas exceeding 8000 km²; the numerical simulation results based on hydrodynamics, considering ground friction and duration of the storm surge high water, show that a 50-year or 100-year storm surge can only inundate an area of over 2000 km², which is far less than 8000 km²; while, when taking into account the land subsidence and sea level rise, the very inundation range will rapidly increase by 2050 and 2100. The storm surge will greatly impact the coastal area within about 10–30 km of the Bohai Bay, in where almost all major coastal projects are located. The prompt response to flood disaster due to storm surge is urgently needed, for which five suggestions have been proposed based on the geological background of Bohai Bay. This study may offer insight into the development of the response and adaptive plans for flooding disasters caused by storm surge.</div></div>","PeriodicalId":45329,"journal":{"name":"China Geology","volume":"7 3","pages":"Pages 494-504"},"PeriodicalIF":4.6,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419039","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"U-Pb dating of monazite in the Bainiuchang silver polymetallic deposit, Yunnan Province, and its limitation on Mesozoic mineralization","authors":"","doi":"10.31035/cg2023052","DOIUrl":"10.31035/cg2023052","url":null,"abstract":"","PeriodicalId":45329,"journal":{"name":"China Geology","volume":"7 3","pages":"Pages 592-595"},"PeriodicalIF":4.6,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79592059","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Planning and construction of Xiong'an New Area (city of over 5 million people): Contributions of China's geologists and urban geology","authors":"Bo Han ,&nbsp;Zhen Ma ,&nbsp;Liang-jun Lin ,&nbsp;Hong-wei Liu ,&nbsp;Yi-hang Gao ,&nbsp;Yu-bo Xia ,&nbsp;Hai-tao Li ,&nbsp;Xu Guo ,&nbsp;Feng Ma ,&nbsp;Yu-shan Wang ,&nbsp;Ya-long Zhou ,&nbsp;Hong-qiang Li","doi":"10.31035/cg2024055","DOIUrl":"10.31035/cg2024055","url":null,"abstract":"<div><div>China established Xiong'an New Area in Hebei Province in 2017, which is planned to accommodate about 5 million people, aiming to relieve Beijing City of the functions non-essential to its role as China's capital and to expedite the coordinated development of the Beijing-Tianjin-Hebei region. From 2017 to 2021, the China Geological Survey (CGS) took the lead in multi-factor urban geological surveys involving space, resources, environments, and disasters according to the general requirements of “global vision, international standards, distinctive Chinese features, and future-oriented goals” in Xiong'an New Area, identifying the engineering geologic conditions and geologic environmental challenges of this area. The achievements also include a 3D engineering geological structure model for the whole area, along with “one city proper and five clusters”, insights into the ecology and the background endowment of natural resources like land, geothermal resources, groundwater, and wetland of the area before engineering construction, a comprehensive monitoring network of resources and environments in the area, and the “Transparent Xiong'an” geological information platform that is open, shared, dynamically updated, and three-dimensionally visualized. China's geologists and urban geology have played a significant role in the urban planning and construction of Xiong'an New Area, providing whole-process geological solutions for urban planning, construction, operation and management. The future urban construction of Xiong'an New Area will necessitate the theoretical and technical support of earth system science (ESS) from various aspects, and the purpose is to enhance the resilience of the new type of city and to provide support for the green, low-carbon, and sustainable development of this area.</div></div>","PeriodicalId":45329,"journal":{"name":"China Geology","volume":"7 3","pages":"Pages 382-408"},"PeriodicalIF":4.6,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419032","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Geological reservoir and resource potential (1013 m3) of gas hydrates in the South China Sea","authors":"Pi-bo Su ,&nbsp;Wei Wei ,&nbsp;Yun-bao Sun ,&nbsp;Yao-yao Lü ,&nbsp;Huai Cheng ,&nbsp;Wei-feng Han ,&nbsp;Wei Zhang ,&nbsp;Jin-qiang Liang","doi":"10.31035/cg2024069","DOIUrl":"10.31035/cg2024069","url":null,"abstract":"<div><div>A detailed understanding of the distribution and potential of natural gas hydrate (NGHs) resources is crucial to fostering the industrialization of those resources in the South China Sea, where NGHs are abundant. In this study, this study analyzed the applicability of resource evaluation methods, including the volumetric, genesis, and analogy methods, and estimated NGHs resource potential in the South China Sea by using scientific resource evaluation methods based on the factors controlling the geological accumulation and the reservoir characteristics of NGHs. Furthermore, this study compared the evaluation results of NGHs resource evaluations in representative worldwise sea areas via rational analysis. The results of this study are as follows: (1) The gas hydrate accumulation in the South China Sea is characterized by multiple sources of gas supply, multi-channel migration, and extensive accumulation, which are significantly different from those of oil and gas and other unconventional resources. (2) The evaluation of gas hydrate resources in the South China Sea is a highly targeted, stratified, and multidisciplinary evaluation of geological resources under the framework of a multi-type gas hydrate resource evaluation system and focuses on the comprehensive utilization of multi-source heterogeneous data. (3) Global NGHs resources is nx 10¹⁵ m³, while the NGHs resources in the South China Sea are estimated to be 10¹³ m³, which is comparable to the abundance of typical marine NGHs deposits in other parts of the world. In the South China Sea, the NGHs resources have a broad prospect and provide a substantial resource base for production tests and industrialization of NGHs.</div></div>","PeriodicalId":45329,"journal":{"name":"China Geology","volume":"7 3","pages":"Pages 422-444"},"PeriodicalIF":4.6,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419034","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of geophysical methods in fine detection of urban concealed karst: A case study of Wuhan City, China","authors":"Dao-han Liu ,&nbsp;Lei Wang ,&nbsp;Lei Liu ,&nbsp;Jun-jie Xu ,&nbsp;Jian-qiang Wu ,&nbsp;Pan Liu","doi":"10.31035/cg2023046","DOIUrl":"10.31035/cg2023046","url":null,"abstract":"<div><div>The construction of modern livable cities faces challenges in karst areas, including ground collapse and engineering problems. Wuhan, with a population of 13.74×10⁶ and approximately 1161 km² of soluble rocks in the urban area of 8569.15 km², predominantly consists of concealed karst areas where occasional ground collapse events occur, posing significant threats to underground engineering projects. To address these challenges, a comprehensive geological survey was conducted in Wuhan, focusing on major karst-related issues. Geophysical methods offer advantages over drilling in detecting concealed karst areas due to their efficiency, non-destructiveness, and flexibility. This paper reviewed the karst geological characteristics in Wuhan and the geophysical exploration methods for karst, selected eight effective geophysical methods for field experimentation, evaluated their suitability, and proposed method combinations for different karst scenarios. The results show that different geophysical methods have varying applicability for karst detection in Wuhan, and combining multiple methods enhances detection effectiveness. The specific recommendations for method combinations provided in this study serve as a valuable reference for karst detection in Wuhan.</div></div>","PeriodicalId":45329,"journal":{"name":"China Geology","volume":"7 3","pages":"Pages 517-532"},"PeriodicalIF":4.6,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142419124","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}