检索结果-南通市图书馆

Journal of Geoscience and Environment Protection 2019年第2期7卷 49-61页

作者： tanina drissa soro Gbombélé soro Kouassi Ernest Ahoussi Yéi Marie Solange Oga Nagnin soro Unit Training and Research in Environment University Jean Lorougnon Guédé Daloa Ivory Coast Unit Training and Research in Earth Science University Félix Houphou&#235 t Boigny Abidjan Ivory Coast

Hydrochemical and groundwater quality of High Bandama watershed were investigated through thirty-five (35) samples composed of boreholes, hand pump wells and traditional wells. The analysis of physico-chemical parameters shows that groundwater is acidic with pH ranges from 3.2 to 6.9 and mean of 5.4. Electrical conductivity (EC) values were generally low and minimum and maximum were respectively 77 μS/cm and 553 μS/cm with an average of 250.3 μS/cm. Major cations (Ca2+, Mg2+, Na+ and K+) were also generally low. Ca2+ and Mg2+ are being the most dominants cations with concentration values ranges from 4 - 56 mg/l and 0 - 55 mg/l respectively with mean value of 18.11 and 15.31 mg/l. HCO3? is the most dominant anion with minimum and maximum values ranging from 5 to 215 mg/l. According to WHO guidelines, groundwater quality is good for drinking. Piper diagram classified the hydrogeochemical facies into Ca-HCO3 (48.57%), Ca-Mg-HCO3 (31.43%), Ca-Mg-Cl (17.14%) and Na-Cl (2.86%) water type with one sample for Na-Cl. Compositional relation with plot of Ca + Mg versus HCO3 + SO4 and Chloro Alkaline Indice (CAI) confirms that the majority of groundwater samples (66.67%) exchange their ions Ca and Mg with Na and K from aquifer materials. Gibbs diagram showed that the rock-water interaction or weathering is the dominant process responsible of water chemistry.

关键词： Groundwater Hydrochemical Methods Waters Types High Bandama Watershed

Mapping of Potential Recharge Areas of Fractured Aquifers in the Departments of Yamoussoukro and Toumodi (Central Côte d’Ivoire)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Geographic Information System 2022年第5期14卷 527-545页

作者： Kouassi Hervé Jacques Kokobou Arthur Brice Konan-Waidhet tanina drissa soro Jean Biemi Laboratory of Science and Technology of Environment Jean Lorougnon Guédé University Daloa C&ocirc te d’Ivoire UFR STRM/Felix Houphouet Boigny University Abidjan C&ocirc te d’Ivoire

Groundwater is an important natural resource for all human activity. Today, due to climate change and population growth, the demand has increased considerably, thus requiring their evaluation to ensure sustainability. However, one of the important but difficult to estimate parameters due to its variability is the recharge. This work aims to map the potential recharge of aquifers in the departments of Yamoussoukro and Toumodi. Saaty’s AHP (Analytical Hierarchy Process) multi-criteria analysis technique was used by integrating different thematic layers. First, a reclassification then weighting of these parameters was made according to their influence in the recharge process. Finally, they were integrated into a GIS to produce the map of potential groundwater recharge zones. The results indicate that the potential high recharge areas represent approximately 43.11% of the area of the study area. These areas appear scattered in the sub-prefecture of Yamoussoukro, Kokoumbo Attiegouakro, Toumodi et Kpouèbo.

关键词： Groundwater Recharge Multi-Criteria Analysis GIS Cote d’Ivoire

Mapping of Groundwater Potential by Multicriteria Analysis: Case of the Departments of Yamoussoukro and Toumodi (Central Cote d’Ivoire)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Geographic Information System 2022年第3期14卷 259-279页

作者： Atte Guillaume Atte Arthur Brice Konan-Waidhet tanina drissa soro Abé Parfait Sombo Jean Biemi Laboratory of Science and Technology of Environment Jean Lorougnon Guédé University Daloa C&#244 te d’Ivoire UFR STRM/Felix Houphouet Boigny University Abidjan C&#244 te d’Ivoire

This study focuses on the problem of access to drinking water in the fractured areas of the departments of Yamoussoukro and Toumodi. The problem has become more acute since most of the boreholes drilled have failed. The main objective of this study is to map the areas that are favorable for the installation of large boreholes in the departments of Yamoussoukro and Toumodi in order to increase the population’s drinking water needs. Hydroclimatic and cartographic data, technical surveys of boreholes and satellite images were used to conduct this study. The AHP multi-criteria analysis method was adopted. It consists in aggregating the criteria by weighting and allowed to combine these different data to generate maps of groundwater availability, accessibility and exploitability indicators. These different indicators were then considered as criteria and combined using the full aggregation technique to produce the water potential map. These results show that the study area has significant groundwater reserves with nearly 63% of these areas being favorable for the establishment of large flow boreholes. This study provides some answers to the question of groundwater resources and could be used as a decision support tool in the execution of groundwater collection works in the departments of Yamoussoukro and Toumodi in order to avoid the high percentage of drilling failures encountered in past projects.

关键词： Drilling Fissured Aquifer Groundwater GIS Cote d’Ivoire

Evaluation of Agricultural Practices Scenarios for Reducing Erosion in Buyo Lake Catchment (Sassandra;Cote d’Ivoire) by Use of GIS

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Geoscience and Environment Protection 2019年第7期7卷 154-171页

作者： Jean-Jacques Tanoh Koua Armand Kouao Anoh drissa tanina soro Jean Kan Kouame Roger Jean Patrice Jourda Environment Training and Research Unit Jean Lorougnon Guédé University Daloa Cote d’Ivoire Earth Sciences and Mineral Resources Training and Research Unit Felix Houphouet Boigny University Abidjan Cote d’Ivoire University Center for Research and Application in Remote Sensing Abidjan Cote d’Ivoire

This study has used RUSLE model factors within a GIS component to evaluate eroded soil and developed viable agricultural practices scenarios to reduce soil loss in Buyo Lake catchment in the Western region of Côte d’Ivoire. Consequently, five study cases were tested as following: scenario 1—association of dense forest and crops with a high percentage of mulch;scenario 2—corn and sorghum combination by considering a high yield without conventional tillage;scenario 3—establishment of an herbaceous meadow;and scenario 4—association of palm, coffee, and cocoa with green cover. Scenario P was the setting up of straw mulch after corn or sorghum harvest. The erosion map resulting from these study cases showed by estimation, an average of soil loss of about 95 t/ha/year. The respective values obtained for the scenarios 1, 2 and 3 are 28 t/ha/year, 66 t/ha/year and 30 t/ha/year. This indicates a decrease of 68%. By scenario 4, the estimated average was 2 t/ha/year corresponding to a decrease of 98%. The combination of scenario 2 with scenario P gave soil losses average of 5 t/ha/year, i.e. a 95% reduction. This study shows that the association of palm, coffee, and cocoa with green cover would be very effective in reducing soil loss.

关键词： Agricultural Practices Soil Erosion Scenarios Buyo Lake Catchment Cote d’Ivoire

Hydrogeochemical Characterization of Groundwater from Fissured Aquifers in the Angovia Mine Operating Permit Area (Central-West Côte d’Ivoire)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Water Resource and Protection 2024年第1期16卷 83-101页

作者： Kouadio Michel Yao tanina drissa soro Tanoh Jean Jacques Koua Akaie Jean Fabrice Tchakray Yao Emile Desmond Konan Brou Dibi Laboratory of Sciences and Technologies of Environment University Jean Lorougnon Guede Daloa C&ocircte d’Ivoire

The main objective of this study is to determine the hydrogeochemical specificities of the groundwater of the Angovia mine operating permit, located in the Yaouré mountains in the center-west of Côte d’Ivoire. To do so, descriptive and multivariate statistical analysis methods with the SOM (Self Organizing Maps) algorithm were applied to the physicochemical parameters of 17 boreholes using the calcite (ISC) and dolomite (ISD) saturation indices. The results obtained have shown that the groundwater in the Angovia mine operating permit area has an average temperature of 27.52°C (long rainy season) and 27.87°C (long dry season) and has an average pH of 7.09 ± 0.35 during the main rainy season and 7.32 ± 0.35 during the main dry season. They are mineralized with an average electrical conductivity of 505.98 ± 302.85 μS/cm during the long rainy season and with 450.33 ± 233.74 μS/cm as average during the long dry season. The main phenomena at the origin of groundwater mineralization are water residence time, oxidation-reduction and surface inflow. The study of the relative age of the water shows that the groundwater in the Angovia mine operating permit area is mainly undersaturated with respect to calcite and dolomite. They are therefore very old in the aquifer with a slow circulation speed during the long rainy season and the long dry season.

关键词： Hydrogeochemistry Mineralization Fissure Aquifers Operating Permits The Angovia Mine

Impact of Beekeeping on the Wild Bee Diversity in Northern Ivory Coast(West Africa)

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Research in Ecology 2024年第1期6卷 6-13页

作者： drissa Coulibaly Mouhamadou Koné Yalamoussa Tuo Kolo soro Kouakou Hervé Koua Department of Animal Biology Biological Sciences UnityUniversity Peleforo Gon CoulibalyBP 1328KorhogoIvory Coast Biosciences Unity Department of ZoologyAnimal Biology and EcologyUniversity Felix Houphouët-Boigny22 BP 1611 Abidjan 22Ivory Coast

In Ivory Coast,beekeeping takes an important place among the major economic *** contributes to improv-ing the population’s livelihoods thanks to its derived products which are honey,propolis,wax and royal ***-ever,the installation of honey bee hives could put pressure on wild bee species,which often live ***,these wild bees are excellent pollinators of cultivated and wild *** study aimed to assess the effect of honey bee hives on the diversity of wild *** methodology approach consisted of capturing bees in three different plots inside the forest fragment of the botanical garden located at the University Peleforo Gon *** first plot was chosen approximately from 10 m to an apiary containing ten *** two other plots were chosen to be 200 m and 400 m from the apiary,*** were captured once a month for three months using pan traps(UV—blue,yellow and white).A total of 17 bee species belonging to three families(Apidae,Megachilidae and Halictidae)were *** furthest plot from the apiary was the most diverse(H’=2.49)and that near the apiary was the least diverse(H’=0.11).Only,two wild bee species,Hypotrigona *** Thrinchostoma petersi,persisted inside the plot nearby the apiary where honey bees were most *** furthest plots from the apiary seem to have the highest diversity of wild *** findings are very relevant because they can be used for the policies of conservation of wild bees and the management of beekeeping activities.

关键词： Honey bee Apiary Hive Conservation Korhogo