가축분뇨실태조사를 위한 양분수지 산정 모델 개발

Nutrient (i.e., nitrogen and phosphorus) budgets are required under a 'Livestock Excreta Survey'. Nutrient budget is one of the agri-environmental indicators that calculates the difference between inputs and outputs of amount of nutrients within a certain boundary and for a period (e.g., 1 year). In this study, a nutrients budget model was developed to effectively determine the surplus of nutrients within a region in Korea. C# program language was used in order to facilitate the deployment of graphical user interface (GUI) and to enhance compatibility. Also the model was developed on Windows OS which is the commonly used operating system in Korea. The model was based on the OECD/Eurostat nutrient budget method and modified to consider manure composting procedures as well. There are key features of the nutrient budget model including directly use of original data sets from various input and output sources, and collectively exchange of the address in different formats. The model can quickly show the results in various spatial and temporal resolutions with the same data, perform the sensitivity analysis with coefficients and easily compare the results using tables and graphs. Further it would be necessary to study the extension of the scope of utilization, such as the application of various nutrient budget methods, and both pre and post processings such as linking input data through online etc.