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Assessment of surface and subsurface waterlogging, water level fluctuations, and lithological variations for evaluating groundwater resources in Ganga Plains

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International Journal of Digital Earth 2013年第3期6卷 276-296页

作者： Arvind Chandra Pandey Suraj Kumar Singh M.S.Nathawat Dipankar Saha Department of Remote Sensing Birla Institute of TechnologyMesraRanchiIndia Central Ground Water Board Ministry of Water ResourcesPatnaIndia

In the present study,the multi-temporal satellite images of IRS P6 LISS III were used to map waterlogging dynamics over different *** area of 594.36 km2(6.75%)and 4.17 km^(2)(0.04%)was affected by surface waterlogging during pre and postmonsoon season,*** average annual groundwater level fluctuations were calculated using 18 years(1990-2007)pre and postmonsoon groundwater level data to identify the areas which are under groundwater induced waterlogging *** soil map clearly indicates that salinity and sodicity exhibit the highest severity and occur in areas with shallow groundwater *** hydrogeomorphical units mapped using IRS P6 LISS III satellite images are flood plain,alluvial plain,paleochannels,and oxbow *** study revealed that 44.65%areas have very good to excellent groundwater *** litholog data clearly indicate an alternating sequence of clay and sand in which deep aquifers made up of coarse sand would be best suited for adequate water supply and good groundwater *** integrated study utilizing digital spatial data pertaining to waterlogging,soil salinity,water level fluctuation,and lithological variation proved that planning of any surface and subsurface water resources development activity should be taken up after assessments of said parameters.

关键词： waterlogging salinity Ganga plain digital earth groundwater resources digital data

Climate change and groundwater resources in Thailand

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Journal of groundwater Science and Engineering 2017年第1期5卷 67-75页

作者： SRISUK Kriengsak NETTASANA Tussanee groundwater Research Center Faculty of Technology Khon Kaen University Department of groundwater resources Ministry of Natural Resources and Environment

The average temperature of Thailand is projected to increase by 2-3 °C, and the annual rainfall is projected to increase by 25% and up to 50% in certain areas. The climate change in future is expected to provide changes in hydrological cycle and therefore impacts the groundwater resources too. In this study, we analyzed the general climate change trends and reviewed the groundwater conditions of Thailand. The climate changes, hydrologic variability and the impact of climate change on groundwater sustainability are also discussed based on a national groundwater monitoring program. Currently, there are 864 groundwater monitoring stations and 1 524 monitoring wells installed in Thailand. Moreover, the impact of climate change on groundwater-dependent systems and sectors is also discussed according to certain case studies, such as saline water intrusion in coastal and inland areas. Managing aquifer recharge and other projects are examples of groundwater adaptation project for the future.

关键词： Climate change Hydrologic variability groundwater resources groundwater sustainability Thailand

Exploitation of groundwater resources and protection of wetland in the Yuqia Basin

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Journal of groundwater Science and Engineering 2017年第3期5卷 222-234页

作者： ZHANG Chun-chao LI Xiang-quan GAO Ming HOU Xin-wei LIU Ling-xia WANG Zhen-xing MA Jian-fei Institute of Hydrogeology and Environmental Geology Shijiazhuang 050061 China

In Yuqia Basin, the climate is arid and the ecologic environment is fragile, and shortage of water resources has seriously restricted the sustainable development of local economy. In order to meet the needs of industrial and domestic water in the Yuqia Basin, numerical simulation was used to evaluate the groundwater resources and potential for exploitation. The results showed that the mathematical model and calculation parameters used were mainly in accordance with practical situation. The calculated value of the underground water level is consistent with measured value during the period of identification and validation. The total recharge of groundwater resources was 22.02×10~4 m^3/d, and the total drainage was 21.95×10~4 m^3/d at present. The Yuqia River leakage is the main supply source of groundwater. There is no significant effect on area of wetland when water source place exploited by 2.5×10~4 m^3/d at alluvial-diluvial fan of Yuqia River. After long-term exploitation, the spring flow reduces from 1.42×10~4 m^3/d to 1.01×10~4 m^3/d and wetland area reduces by 32.7% of original area. The calculation of water balance shows that it is safe to the Yuqia Basin, Da Qiadam Lake, the Mahai Basin at downstream of Yuqia River and wetland under the condition of water source place exploited by 2.5×10~4 m^3/d.

关键词： Yuqia Basin groundwater resources Numerical simulation Water source Wetland

Risk Analysis on groundwater resources Carrying Capacity Based on Blind Number Theory

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Wuhan University Journal of Natural Sciences 2007年第4期12卷 669-676页

作者： ZHANG Ji1,2,YU Sujun31. Key Laboratory of Mountain Hazards and Surface Process,Chinese Academy of Sciences/Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu 610041,Sichuan,China 2. Graduate University of the Chinese Academy of Sciences,Beijing 100049,China 3. School of Environmental Science and Engineering,Southwest Jiaotong University,Chengdu 610041,Sichuan,China Key Laboratory of Mountain Hazards and Surface Process Chinese Academy of Sciences Chengdu China Graduate University of the Chinese Academy of Sciences Beijing China Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu China School of Environmental Science and Engineering Southwest Jiaotong University Chengdu China

Blind numbers of evaluation indices about groundwater resources carrying capacity are defined from the concomitancy of randomness, fuzziness, grey property and unascertainment of groundwater system. Based on fuzzy theory, a comprehensive evaluation model on groundwater resources carrying capacity is constructed with blind information. Then a risk assessment model of surcharge about groundwater resources carrying capacity is established on blind reliability theory. The probable value ＂＊＂ matrix of fuzzy membership degree about carrying capacity corresponding to each judgment level can be obtained with the aid of blind algorithm as well as the subjective reliability ＂×＂ matrix. And then a graph of ＂groundwater carrying capacity v.s. accumulative reliability＂ can be gained Based on the graph, fuzzy membership degree of groundwater resources carrying capacity to each judgment level under different risk probability can be got. Thus, a comparatively reasonable judgment to groundwater resources carrying capacity might be obtained, with comprehensive analysis to the state of society, economy technology and ecology.

关键词： blind number theory groundwater resources carrying capacity evaluation risk analysis

Dynamic evaluation of groundwater resources in Zhangye Basin

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Research in Cold and Arid Regions 2016年第3期8卷 250-262页

作者： LiNa Mi HongLang Xiao ZhengLiang Yin ShengChun Xiao Key Laboratory of Ecohydrology of Inland River Basin Cold and Arid Regions Environmental and Engineering Research InstituteChinese Academy of Sciences/Heihe Key Laboratory of Ecohydrology and Integrated River Basin ScienceLanzhouGansu 730000China University of Chinese Academy of Sciences Beijing 100049China

groundwater resource is vital to the sustainable development of socio-economics in arid and semi-arid regions of Northwest China. An estimation of the groundwater resources variation in Zhangye Basin was made during 1985-2013 based on long-term groundwater observation data and geostatistical method. The results show that from 1985 to 2013, groundwater storage exhibited tremendous dissimilarity on temporal and spatial scale for the whole Zhangye Basin, especially before and after implementation of the water diversion policy. Trend of groundwater storage varied from quick to slow decline or increase. The accumulative groundwater storage decreased nearly 47.52~ 108 m3, and annual average depletion rate reached 1.64x 108 m3/a. Among which, the accumulative groundwater storage of the river and well water mixed irrigation district decreased by 37.48x 108 m3, accounting for about 78.87% of the total groundwater depletion of the Zhangye Basin. Accumulative depletion of groundwater storage varied in respective irrigation districts. Though groundwater resources depletion rate slowed down from 2005, the overall storage in the whole basin and re- spective districts during 1985-2013 was still in a severe deficit such that, the groundwater resource was in a rather negative balance, which could threaten the local aquifer. This is the joint effect of climate change and human activities, however human activities, such as water diversion policy and groundwater exploitation, became increasingly intense. Our research results could provide a reasonable estimation for the groundwater balance in Zhangye Basin, providing a scientific basis for water resources unified planning and, this method can provide a relatively reliable way of estimation for large scale groundwater resources.

关键词： groundwater resources dynamic evaluation grotmdwater storage Zhangye Basin

Stratigraphic Data and groundwater resources in the Coastal Sedimentary Basin of the Pointe-Noire Region (Republic of Congo)

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Journal of Water Resource and Protection 2020年第12期12卷 1019-1033页

作者： Guy Dieudonne Moukandi N’Kaya Louis Okotaka Ebale Christian Tathy Jean De Dieu Nzila Jean Luc Mouthou Bernard Mabiala LMEI/CUSI/Ecole Nationale Supérieure Polytechnique Marien Ngouabi University Brazzaville Congo LARGEN/Ecole Normale Supérieure Marien Ngouabi University Brazzaville Congo Faculté des Lettres et des Sciences Humaines Département de Géographie Université Marien Ngouabi Brazzaville Congo

The synthesis of geological and petroleum research undertaken in the coastal Sedimentary Basin of the Pointe-Noire region enabled the establishment of a lithostratigraphic scale. It has been observed that the order in which the series observed in outcrop and those encountered by deep wells succeed each other has allowed a value to be given to this relative scale. The study area corresponds to a longitudinal tectonic accident, fault or flexure. It belongs to the Cretaceous and Tertiary coastal sedimentary basin covered by the Plio-Pleistocene age formations (series of circuses), formed of highly permeable sands comprising multiple resistant horizons that store large bodies of water whose reserves are considered very important. Hydrographic network is composed of four main basins with a mediocre size. The quality of this groundwater is considered to be satisfactory for household consumption, but the sustainable management of these reserves requires constant checks on their quality as well as on the level of the reserves. All these resources put the agglomeration of Pointe-Noire close to large exploitable water reserves that meet the need for drinking water, even if, on the whole, the agglomeration is still experiencing many difficulties in terms of its drinking water supply.

关键词： Geological Stratigraphic Scale groundwater resources Coastal Aquifers Sedimentary Basin Pointe-Noire

Progress on the mapping of groundwater resources and environment in Asia

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Journal of groundwater Science and Engineering 2015年第2期3卷 105-117页

作者： ZHANG Fa-wang CHENG Yan-pei Institute of Karst Geology Chinese Academy of Geological Sciences Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological Sciences

With the ever-accelerating economic and social growth in Asia,the sustainable development of environment,economy and society of Asia and beyond,is severely constrained by a series of grave issues,such as global climate change,population explosion,resource shortage,and rampant *** need for study on groundwater resources and environment in Asia as part of the efforts to tackle global climate change looms even *** analyzing how global changes of modern times and human activities are related to primary geo-environment,the groundwater environment serial maps of Asia introduces a new concept for mapping geo-environment of Asia that connects the geological background to groundwater *** serial maps reveal the geographic environment that is closely related to groundwater,the special-temporal features of the geo-environment and how it is *** study is vital not only to the harmonious development among environment,economy and society as well as ecological progress in Asia,but also to the strategic requirements posed by the'One Belt One Road'.

关键词： Asia groundwater resources groundwater environment Serial maps of groundwater

groundwater Systems and resources in the Ordos Basin,China

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Acta Geologica Sinica(English Edition) 2008年第5期82卷 1061-1069页

作者： HOU Guangcai LIANG Yongping SU Xiaosi ZHAO Zhenghong TAO Zhengping YIN Lihe YANG Yuncheng WANG Xiaoyong Xi＇an Institute of Geology and Mineral resources Xi＇an Shaanxi 710054 Institute of Karst Geology Chinese Academy of Geological Sciences Guilin Guangxi 541004 Institute of Water resources and Environment Jilin University Changchun Jilin 130026

The Ordos Basin is a large-scale sedimentary basin in northwestern China. The hydrostratigraphic units from bottom to top are pre-Cambrian metamorphic rocks, Lower Paleozoic carbonate rocks, Upper Paleozoic to Mesozoic clastic rocks and Cenozoic deposits. The total thickness is up to 6000 m. Three groundwater systems are present in the Ordos Basin, based on the geological settings, i.e. the karst groundwater system, the Cretaceous clastic groundwater system and the Quaternary groundwater system. This paper describes systematically the groundwater flow patterns of each system and overall assessment of groundwater resources.

关键词： groundwater system circulation and evolution groundwater resources Ordos Basin

groundwater and environmental challenges in Asia

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Journal of groundwater Science and Engineering 2024年第2期12卷 223-236页

作者： Yan-pei Cheng Fa-wang Zhang Hua Dong Xue-ru Wen Institute of Hydrogeology and Environmental Geology Chinese Academy of Geological SciencesShijiazhuang 050061China Key Laboratory of groundwater Sciences and Engineering Ministry of natural ResourcesZhengding 050803HebeiChina Center for Hydrogeology and Environmental Geology Survey China Geological SurveyBaoding 071051HebeiChina

Asia stands out as the most populous and geographically diverse region *** pressing issues of water resource development and the resulting ecological impacts are exacerbated by the region's rapid population growth and economic ***,a vital source of water in Asia,faces significant disparities in distribution and suffers from unsustainable exploitation *** study applies groundwater system theory and categorizes Asia into 11 primary groundwater systems and 36 secondary ones,based on intercontinental geological structures,climate,terrain,and hydrogeological *** of the end of 2010,Asia's assessed groundwater resources totalled 4.677×10^(9) m^(3)/a,with exploitable resources amounting to 3.274×10^(9) m^(3)/*** considering the geological environmental impacts of groundwater development and the distinctive characteristics of terrain and landforms,six categories of effect zones with varying distribution patterns are *** current research on Asia's groundwater resources,environmental dynamics,and human impacts aims to provide a theoretical foundation for sustainable groundwater management and environmental conservation in the region.

关键词： Asia groundwater resources groundwater quality Ecological environment Environmental impacts