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Landfill site suitability Assessment Using Geographic Information System (GIS) and Analytic Hierarchy Process (AHP) in Butuan City, Philippines

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Journal of Environmental & Earth Sciences 2023年第1期5卷 95-107页

作者： Francis Jhun T.Macalam Kaleb P.Arreza Angelica T.Magpantay Kristine Y.Rabaño Department of Environmental Science and Technology College of Science and MathematicsUniversity of Science and Technology of Southern PhilippinesCagayan de Oro Campus9000Philippines Department of Environmental Science College of Forestry and Environmental StudiesMindanao State University9023Philippines Interdisciplinary Studies Center for Integrated Natural Resources and Environment Management College of Forestry and Natural ResourcesUniversity of the Philippines Los BañosLaguna4031Philippines School of Environmental Science and Management University of the Philippines Los BaňosLaguna4031Philippines

Landfilling is one of the most effective and responsible ways to dispose of municipal solid waste(MSW).Identifying landfill sites,however,is a challenging and complex undertaking because it depends on social,environmental,technical,economic,and legal *** study aims to map the optimal sites that were environmentally suitable for locating a landfill site in Butuan City,*** reference to the policy requirements from DENR Section I,Landfill site Identification Criteria and Screening Guidelines of National Solid Waste Management Commission,the integration of a Geographic Information System(GIS)model builder and Analytical Hierarchy Process(AHP)has been used in this study to address the aforementioned challenges related to the landfill site suitability *** on the generated sanitary landfill suitability map,results showed that Barangay Tungao(1131.42967 ha)and Florida(518.48 ha)were able to meet and consider the three(3)main components,namely economic,environmental,and physical criteria,and are highly suitable as landfill site locations in Butuan *** is recommended that there will conduct a geotechnical evaluation,involving rigorous geological and hydrogeological assessment employing a combination of site investigation and laboratory *** addition,additional specific social,ecological,climatic,and economic factors need to be considered(*** impact on humans,flora,fauna,soil,water,air,climate,and landscape).

关键词： Geographic information system Sanitary landfill Analytic hierarchy process Butuan City site suitability

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Spatial Analysis and Modelling of Wind Farm site suitability in Nasarawa State, North-Central Nigeria

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Journal of Geographic Information System 2021年第5期13卷 603-630页

作者： Chukwunonso Emmanuel Ozim Anita Odionyenfe Nweke Salamatu Abraham Ekpo Olufemi Stephen Oladeinde Haruna Kuje Ayuba Udochukwu Michael Mbanaso GIS Unit Enugu Electricity Distribution Company Enugu Enugu State Nigeria Federal Ministry of Mines and Steel Development Abuja FCT Nigeria Department of Environmental Management Faculty of Environmental Science Nasarawa State University Keffi Nigeria National Space Research and Development Agency Obasanjo Space Centre Abuja FCT Nigeria Department of Urban and Regional Planning Faculty of Environmental Science Nasarawa State University Keffi Nigeria

There has been an increasing global and local interest in developing renewable, clean, and cheap energy towards achieving Goal number 7 of the Sustainable Development Goals (SDG). However, decisions involving suitable and sustainable locations for renewable energy projects remain an important task. This study employed Geographic Information System (GIS) and Multi-Criteria Decision Analysis (MCDA) to spatially analyze and model wind farm site suitability in Nasarawa State. The aim is to integrate the environmental, social, and economic aspects of decision-making for identifying sustainable wind farm sites. The study distinguished between two sets of decision criteria: decision constraints and decision factors. The former defined the exclusion zones while the latter were standardized based on fuzzy logic to depict varying degrees of suitability across the State. The MCDA applied the weighted linear combination method, with relative weights generated through pairwise comparisons of the analytic hierarchy process to analyze three policy scenarios: equal weights, environmental/social priority, and economic priority scenario. A combination of resulting composite maps from the constraints and the factors gave the final suitability maps. The resulting suitability index (SI) for the respective policy scenario describes the degrees of suitability: Ideal locations were denoted by one (1) and the not suitable locations by zero (0), with values in-between depicting varying degrees of wind farm site suitability. Based on the SI, priority locations indicating areas with good prospects, in addition to the most suitable parcels of land, were identified and delineated. The composite decision constraint revealed that wind farm projects would not be viable in more than half (57.58%) of the State. Wind speed was the major constraint and accounted for the exclusion of 46.25%, with a mean fuzzy membership value of 0.2008 indicating low suitability across the State. Also, the average accep

关键词： GIS Multi-Criteria Spatial Analysis and Modelling Wind Energy Farm site suitability Nasarawa State Nigeria

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suitability evaluation on marine ranching in Guangdong,South China

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Journal of Oceanology and Limnology 2023年第2期41卷 778-791页

作者： Anning SUO Weiguo ZHOU Dewen DING Key Laboratory of Tropical Marine Bio-resources and Ecology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China

The ecological suitability of marine resources and environmental conditions for marine ranching in Guangdong,South China was *** theory was used to establish an ecological suitability evaluation model for marine ranching site selection,and suitability evaluation of marine ranching was conducted *** show that the ecological suitability index of marine ranching site selection was greater than 64.0 in 20 sites,including offshore Shantou Bay,offshore Zhanjiang Port,and Longdou Bay etc.,which are the priority areas for marine *** other 13 sites,the ecological suitability index ranged between 8.0 and 32.0,including Houjiang Bay,Haimen Bay,and Jieshi Bay etc.,indicating the suitability for marine ***,the ecological suitability index was 0 in Shantou Bay,Zhujiang(Pearl)River estuary,Huangmao Sea,Guanghai Bay,Zhanjiang Port,Qiongzhou Strait,and Anpu *** sites are thus unsuitable for marine *** study provides a theoretical basis for site selection and planning of marine ranching in Guangdong Province.

关键词： marine ranching site suitability evaluation ecological niche Guangdong Province

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