scholarly journals IDENTIFYING SUITABLE AREAS FOR SMALL FARM RESERVOIR IN AGUSAN DEL NORTE USING GEOGRAPHIC INFORMATION SYSTEM

2019 ◽  
Vol XLII-4/W19 ◽  
pp. 89-91
Author(s):  
A. O. Cacayan Jr ◽  
A. G. Apdohan ◽  
A. E. Bocobo ◽  
J. L. Ruta
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
The Philippines ◽  
Geographic Information ◽  
Small Time ◽  
Small Scale ◽  
Small Farm ◽  
Irrigation Project ◽  
Standardized Protocol ◽  
Suitability Map

Abstract. The Philippines, as a part of Southeast Asia, falls into the zone categorized with agricultural areas prone to drought. Mitigating the concerns due to such vulnerability and also catering the needs of small-time farmers, rainfall harvesting with the use of agricultural structures called Small Farm Reservoirs (SFRs) used for storing water for irrigation are being used and deployed. This study aims to identify ideal locations for SFR which is essential due to the concerns of its geographical appropriateness and its vulnerability to environmental and other concerns such as seepage, sustainability, and optimizing yield. Geographic Information System through the ArcMap software is a modern tool for decision making, especially in the concerns of suitability and vulnerability assessment and was used in creating the suitability map for SFR in this study. The suitability map was created with the use of pre-processed raster data sets for precipitation, soil texture, slope, irrigation status. Weights for the weighted overlay were acquired from the standardized protocol for Small Scale Irrigation Project (SSIP) standardized protocol for site suitability identification from the Department of Agriculture - Bureau of Soil and Water Management (DA-BSWM) Philippines. Existing SFRs in the study area were validated through site visitation and were evaluated for usability and performance. The suitability map created accurately identified suitable zones for establishing SFRs with a result of 7 out of 7 existing SFRs are within the suitable zones, six (6) sites in the moderately suitable and one (1) on marginally suitable.

scholarly journals Small and Micro-Hydropower Plants Location by Using Geographic Information System

Proceedings ◽  
2018 ◽  
Vol 2 (20) ◽  
pp. 1300
Author(s):  
Eva Gómez-Llanos ◽  
Pablo Durán-Barroso ◽  
Juana Arias-Trujillo ◽  
Jose M. Ceballos-Martínez ◽  
Jesús A. Torrecilla-Pinero ◽  
...  
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Alternative Energy ◽  
Geographic Information ◽  
Hydrologic Model ◽  
Small Scale ◽  
Water Supply Systems ◽  
Urban Water ◽  
Hydropower Plants ◽  
Hydropower Potential

Small-scale hydropower plants (SHP), and in particular the micro-hydropower plants (MHP) and pico-hydropower plants (PHP), are considering as an alternative energy resource based on the hydroelectric potential available in urban water cycle because of the excess of pressure existing in some urban water supply systems (WSS). Nowadays, pressure-reducing valves are necessary to reduce water pressure in WSS, so the use of a pump as turbine (PAT) can be considered as a proper way for reaching both an enough water head reduction and a hydropower generation possibility (self-consumption or energy recovery). MHPs are based on existing hydraulic resources where the PAT location is necessary, especially in those points with an excess of energy, which derives in an extra cost in terms of conservation and maintenance of the infrastructure or lead to the necessary installation of dissipation devices. The locations of these points are strongly influenced by the geographical and hydrological conditions, so a Geographic Information System (GIS) is a very useful tool for implementation of SHP and MHP or PHP projects. This paper describes the assessment and comparison of the methodology followed in the SHP and MHP locations: necessary data, GIS development, hydrologic model and hydropower potential.

scholarly journals Regional scale screening over selected regions of bangladesh to identify potential sites for the disposal of low and intermediate level radioactive waste

2021 ◽  
pp. 10-10
Author(s):  
Khondokar Sakib ◽  
Abu Haydar ◽  
Idris Ali ◽  
Debasish Paul ◽  
Shah Alam
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Radioactive Waste ◽  
Regional Scale ◽  
Geographic Information ◽  
Analysis Method ◽  
Continental Scale ◽  
Suitability Map ◽  
Suitability Maps ◽  
Multi Criteria Analysis

Disposal of radioactive wastes has been emerged as a vital issue for Bangladesh as the country is actively working to be the nuclear power plant operating country by 2023-2024. Current study aims to find out potential sites for a near-surface disposal facility using geographic information system software and multi-criteria analysis method. Previously six regions (Region-1 to Region-6) were identified upon performing continental scale screening over the whole territory of Bangladesh. In the current study, regional scale screening has been performed over the Region-1 and Region-2 using five criteria divided into fifteen sub-criteria, namely earthquakes, wind speed, rainfall, cultivated-vegetated land, forests, buildings-facilities-build up areas (area), buildings-facilities-Industries-institutions (Point), population density, medium-broad road and railway, narrow road, power line, ground water table, surface water body and lastly flood were used in the analysis. The suitability map and relative importance weighting of these sub-criteria were determined by using geographic information system and multi-criteria analysis method. The overlay analysis was performed over suitability maps of each sub-criterion and found final suitability map of the Region-1 and Region-2. These suitability maps were divided into six category, namely excluded area, most suitable, suitable, moderately suitable, unsuitable and completely unsuitable. Nineteen potential sites with maximum and minimum area of 7.90 km2 and 1.15 km2 were identified from these most suitable and suitable areas. Detailed field investigation and site characterization are needed to be performed on selected potential sites to choose a final disposal site for the low and intermediate levels of radioactive waste.

scholarly journals Participatory geographic information systems use in Copan Ruinas, Honduras: the development and evaluation of an environmental restoration public participatory Geographic Information System project

2018 ◽  
Vol 3 (61E) ◽  
pp. 505-522
Author(s):  
James M. Johnson
Keyword(s):  
Sustainable Development ◽  
Information System ◽  
Geographic Information System ◽  
Public Participation ◽  
Habitat Restoration ◽  
International Association ◽  
Geographic Information ◽  
Small Scale ◽  
Participatory Geographic Information System ◽  
System Project

Sustainable development is the challenge of the 21st century, and public administration will play a part in finding new ways of meeting human needs within the constraints of natural resource systems. The nature of sustainable development has led to expanded forms of governance and new partnerships among non-governmental organizations (NGOs), non-profits, and governments at all levels. This paper examines a participatory geographic information system project being developed in Copan Ruinas, Honduras and its effect on the community stakeholders. pecifically, the participatory geographic information system project will focus on the development of a geodatabase and usable maps that integrate: small-scale (less than five hectares on average) agroforestry projects, and highland habitat restoration projects. During this research, we will focus on the geographic information system project, public participation and how the project meets the standards of the International Association for Public Participation (IAP2) pillars of participation and core values.

scholarly journals Site selection for managed aquifer recharge in the city of Kabul, Afghanistan, using a multi-criteria decision analysis and geographic information system

2021 ◽  
Author(s):  
Mohammad Salem Hussaini ◽  
Asadullah Farahmand ◽  
Sangam Shrestha ◽  
Sanjiv Neupane ◽  
Manuel Abrunhosa
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Decision Analysis ◽  
Infiltration Rate ◽  
Managed Aquifer Recharge ◽  
Drainage Density ◽  
Geographic Information ◽  
Aquifer Recharge ◽  
Multi Criteria Decision Analysis ◽  
Suitability Map

AbstractWhile the success and sustainability of managed aquifer recharge (MAR) strongly depends on many characteristics of the site, it is necessary to integrate the site characteristics and develop suitability maps to indicate the most suitable locations. The objective of this study is to integrate geographic information system (GIS) and multi-criteria decision analysis (MCDA) techniques to identify the most suitable areas for a MAR project in the Kabul city area, Afghanistan. Data for six effective criteria, including slope, drainage density, surface infiltration rate, unsaturated zone thickness, soil type and electrical conductivity, were collected and then a classification map was produced for each criterion in the GIS environment. By applying MCDA techniques, the weights of the effective criteria were obtained. A suitability map was generated from each technique separately based on a combination of all criteria weights and thematic layers. The result of the analytical network process (ANP) method was found to be more precise and reliable compared with that of the analytical hierarchy process (AHP) method. Based on the final suitability map produced from the ANP model, there is 3.7, 15.0, 37.4, 33.1 and 10.3% of the total area that is unsuitable, of low suitability, moderately suitable, suitable and very suitable for MAR application, respectively. As a final result of this work, seven sites have been prioritized based on land use. The integration of multi-criteria decision analysis and GIS is recognized as an effective method for the selection of managed aquifer recharge sites.

scholarly journals Establishment of a Geographic Information System-Based Algorithm to Analyze Suitable Locations for Green Roofs and Roadside Trees

2021 ◽  
Vol 11 (16) ◽  
pp. 7368
Author(s):  
Heeju Kim ◽  
Kyushik Oh ◽  
Dongwoo Lee
Keyword(s):  
Information System ◽  
Ecosystem Services ◽  
Geographic Information System ◽  
Urban Areas ◽  
Green Roofs ◽  
Urban Ecosystem ◽  
Geographic Information ◽  
Green Spaces ◽  
Small Scale ◽  
Urban Green Spaces

Urban green spaces offer various ecosystem services such as those for controlling the urban microclimate, improving water circulation, and providing leisure and recreation opportunities. However, it is almost impossible to create new, large green spaces in cities where urbanization has been long underway. Consequently, small-scale green spaces such as green roofs and roadside trees are gaining attention as features that can increase the effects of ecosystem services. Although the area of individual buildings in urban areas is relatively small, the sum of building rooftop areas account for a large portion of urban areas. Moreover, there are areas widely available throughout cities where street trees could be planted. However, this requires large amounts of accurate databases (DBs) and long-term spatial analyses to identify specific locations suitable for small-scale green facilities on a citywide scale using a geographic information system (GIS). Consequently, in-depth research on this topic has been insufficient. Thus, this study presents an algorithm to analyze locations where green roofs and roadside trees could be introduced based on GIS spatial analysis and verifies the effectiveness of the algorithm built for the city of Seoul. In addition, computational fluid dynamics (CFD) modeling is performed to analyze the temperature reduction effect, the representative function of ecosystem control services that can be brought about by the potential green spaces. The results show that rooftop greening in study areas is possible in 311,793 of 742,770 buildings. The rooftop floor area of buildings that can apply rooftop greening is 33,288,745 m2, which is about 50% of the total area of the rooftop in Seoul. It was found that roadside trees could be planted on a sidewalk with an extension length of 872,725 m and an area of 838,864 m2. A total of 145,366 trees can be planted in the study area. In addition, it was shown that the introduction of green roofs reduced temperatures by 0.13 °C to 0.14 °C and roadside trees reduced temperatures by 0.14 °C to 0.6 °C. With the growing need to improve urban ecosystem services as a result of rapid climate change, the algorithm developed in this study can be utilized to create spatial policies that expand and manage urban green spaces and thereby contribute to the improvement of urban ecosystem services.

Improving the landscape scale management of Buffel Grass Cenchrus ciliaris using aerial survey, predictive modelling, and a Geographic Information System

2007 ◽  
Vol 13 (4) ◽  
pp. 264 ◽  
Author(s):  
Helen Puckey ◽  
Chris Brock ◽  
Cameron Yates
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Aerial Survey ◽  
Landscape Scale ◽  
Geographic Information ◽  
Small Scale ◽  
Surface Model ◽  
Native Plant ◽  
Cenchrus Ciliaris ◽  
Buffel Grass

Buffel Grass Cenchrus ciliaris is a major environmental threat to biodiversity in central Australia and is rapidly expanding its distribution on National Parks and other areas of conservation concern. Managers need appropriate mapping of the potential and current Buffel Grass distribution at a broad landscape scale in order to prioritize their use of limited resources for survey and control efforts. Watarrka National Park was used as a case study to trial the effectiveness of aerial survey for mapping Buffel Grass distribution. Over 7 000 aerial observations were recorded from transects across the whole Park. Ground truthing indicated an acceptable level of accuracy for the aerial derived data at 84%, and a Kappa coefficient of 49. The aerial survey data were used to build a surface probability model for the entire Park based on environmental variables using Generalized Linear Modelling and then applied using a Geographic Information System. Distance to drainage and distance to tracks, followed by ruggedness, hummock grass cover and soil texture were the most important explanatory variables in determining the probability of occurrence of Buffel Grass. The surface model was overlaid with available vegetation mapping to quantify the level of threat to native plant diversity, in particular rare plant species diversity. This information is useful in developing a strategy for managing Buffel Grass at a landscape scale that is based on invasive potential and known biodiversity values, where previous management has focused on small scale site specific control actions.

Pesticide toxicity assessment and geographic information system (GIS) application in small-scale rice farming operations, Thailand

2022 ◽  
Vol 12 (1) ◽  
Author(s):  
Ekarat Sombatsawat ◽  
Dana Boyd Barr ◽  
Parinya Panuwet ◽  
Mark Gregory Robson ◽  
Wattasit Siriwong
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Pesticide Exposure ◽  
Toxicity Assessment ◽  
Geographic Information ◽  
Gis Mapping ◽  
Small Scale ◽  
Rice Farming ◽  
Residential Areas ◽  
The Impact

AbstractThe objectives of the study were to evaluate the impact of pesticide exposure on farmer health during non-active rice farming and active rice farming periods and present the change in the individual cholinesterase activities (%reduction) on the geographic information system (GIS) mapping in Nakhon Ratchasima Province, Thailand. Acetyl- and butyryl-cholinesterase (AChE and BuChE) activities were monitored during both study periods using Test-mate ChE (Model 400). The location of paddy fields was specified using Garmin geographic positioning system MAP 62s. Fifty-eight farmers who participated in this study had an average age of 49.2 ± 6.9 years. Higher prevalence of all health symptoms was observed among farmer participants during the active rice farming period comparing to the non-active rice farming period (p < 0.01). Furthermore, farmers had significantly lower activities of AChE and BuChE during the active rice farming period comparing to the non-active rice farming period (p < 0.01). Our findings indicate that the GIS mapping indicate that the cases with a significant enzyme inhibition have dispersed across the agricultural and the nearby residential areas. This, investigation can be used to promote safer use of pesticides among farmers and mitigate pesticide exposure among residents living in close proximity to a rice field.

Sign in / Sign up

Export Citation Format

Share Document