关键词: Web服务, 封装, 地理模型, 土壤和水文评估工具(SWAT), 分布式地理建模环境

Abstract: This paper takes the hydrological model SWAT as an example, explores the encapsulation technology which encapsulates a Fortran source code into a Web Service. In the geographical models, there are a great many of global variable parameters and internal file readings, which is different from the traditional encapsulation situation. To solve this problem, this paper puts forward a method which makes use of file to transport global variables and file pointer parameters. This encapsulation work is the basis of creating the distributed geographical model environment.

Key words: Web Service, encapsulation, geographical model, soil and water assessment tool (SWAT), distributed geographical model environment