物質循環モデル解析におけるリモート・センシングとGISの役割

抄録

Studies of the agricultural production, the vegetative productivity and the environmental change on a continental/global scale have been possible using remote sensing data and geographical information. This paper describes roles of remote sensing and geographical information system (GIS) in running a material cycle model, and introduces an example of analysis of nitrogen cycle in East and Southeast Asia, combining the nitrogen cycle model with remote sensing and GIS. The nitrogen cycle model was constructed using findings on geochemistry and socioeconomics, and some of its parameters were tuned to chemical analysis values of water sample. The results from the model simulation study clarified the regional differences of nitrogen load and concentration. GIS can help a model- based analysis to change the spatial resolution of data used and sum up the nitrogen load for each category.