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| MacGillivray, C.M.I.; Donovan, S.K.. |
| This research introduces a Geographical Information Systems (GIS) model that predicts the location and relative susceptibility of humid subtropical hillslopes to sheetwash erosion. The extent of the erosion was based on the conservation potential of the existing vegetation cover. This is an original deductive and deterministic model (Potential Erosion Detection, PED) incorporating regionally applicable physical and land use factors thought to be influential. These were climate (agroclimatic zones), topography (aspect and slope angle), soil (texture, drainage, depth, aggregation), vegetation cover and land use (tillage activity). The study looked at surface erosion as a perceived problem in a post-colonial economy. The processes, cause and effect of... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Jamaica; Buff Bay; Geographical Information Systems; IDRISI; Geomorphology; Soil; Erosion; 38.42. |
| Ano: 2007 |
URL: http://www.repository.naturalis.nl/record/217419 |
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| Chiodo, Emilio; Salvioni, Cristina. |
| The AgroGeoTrace (AGT) project makes use of Geographical Information Systems and multichannel information technologies to facilitate the access of final consumers to local food speciality products. The project builds a prototype of an informative system designed, first, to help consumers to understand the agronomic and technological characteristics that make the targeted products special ones, and, second, to precisely and easily locate the sites (farms and oil mills) where they can buy them. The information made available through the project is intended to the symbolic relocalization of the regional products, hence to promote them and to create added value. The final outcomes of the project are the virtual maps of on-farm shops made available on Digital... |
| Tipo: Conference Paper or Presentation |
Palavras-chave: Food speciality products; Short agro-food chains; Geographical Information Systems; Agribusiness. |
| Ano: 2008 |
URL: http://purl.umn.edu/43940 |
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| Burnett, Kimberly M.; Kaiser, Brooks A.; Roumasset, James A.. |
| The optimal size and location of an invasive species population depend upon spatially differentiated biological growth, economic costs, and damages. Although largely absent from most economic models, spatial considerations matter because the likelihood and magnitude of the invasion vary spatially and the threatened assets may be unevenly distributed across space. We map the current and future populations of an invasive species, Miconia calvescens, on Oahu, Hawaii, and the potential damages to water quantity, quality, and endangered-species habitat, and weigh these against treatment costs. We find that optimal densities vary from approximately 1% to 18% cover throughout the island. |
| Tipo: Journal Article |
Palavras-chave: Geographical Information Systems; Hawaii; Invasive species; Miconia calvescens; Oahu; Spatial analysis; Watershed; Q23; Q25; Q28; Q51; Q57. |
| Ano: 2007 |
URL: http://purl.umn.edu/37274 |
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