Web-Based GIS Online Consulting System with Crop-Land Suitability Identification
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概要
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Modern technologies such as Geographical Information System (GIS) would be advantageous in land suitability analysis. Distributing geospatial information on the internet is an enforcing factor for information providers. Web-based GIS technologies can be promoted to share geospatial data with farming community, plantation sector, and academic community and also it helps to make the best decision with the available information on growing crops. This concept can be successfully applied to web-based online consulting system for crop-land suitability. The purpose of this study is to develop an interactive web-based GIS online consulting system with crop-land suitability analysis, which provides information on tomato and cabbage cultivation in Kandy, Matale, Nuwaraeliya and Badulla districts of Sri Lanka. Analysis of topography factor, soil properties, and climatic factors were considered as important criteria to determine crop-land suitability. Maps for each criteria and district map of Sri Lanka were digitized by using the ArcView 9.1. District layer map of Sri Lanka was used to get the study area map. Study area map was utilized to create each spatial characteristics layers (soil, topography, rain fall, temperature, land use). Feature layers were converted to raster format. Raster layers and crop requirement factors were analyzed by GIS spatial analysis tools. Suitability maps were created under four suitability criteria, that is, highly, moderately, marginally, and not suitable. Combination of ASP, VB Script, SQL, GIS, DBMS, Map Server, and Web Server component were used to develop a flexible and user friendly online crop consultation system with web-GIS tools. System facilitates to query out click area of the suitable map, would display information on the district name, suitability rank, suitability category, suitable land area, current vegetation and statistics data. This system also provides documentary consultation from field to marketing.
著者
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Jayasinghe P.
Graduate School Of Agriculture Ibaraki Univ.
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Machida Takemi
Graduate School of Agriculture, Ibaraki University