دانلود رایگان مقاله سیستم پشتیبانی تصمیم گیری مبتنی بر وب برای مدیریت آبیاری کانال

ABSTRACT

Irrigation plays an important role in agricultural production. In this paper, a Web-based irrigation decision support system (WIDSS) is designed for canal irrigation management in large irrigated districts. WIDSS has many functions including data acquisition and detection, real-time irrigation forecast, dynamic water allocation decision and irrigation information management. It uses technical methods to reduce the need for users’ specialized knowledge and can also take users’ managerial experience into account. As the system is developed by the Browser/Server model, it is possible to make full use of the Internet resources and to facilitate users at any place with access to the Internet. Two years’ application in the Zhanghe Irrigation System (Central China) indicates that the proposed WIDSS can achieve promising performance for canal irrigation.

5. Conclusions

This paper discussed the structure, design, objectives, development, and application of WIDSS. The developing process is integrated with infield sensor construction, software programming, data interface, and communication design. Browser/Server development architecture is adopted to realise automatic data acquisition, complicated computing process encapsulation, and input and output (IO) graphical display.

The application in YSD showed the practicability of the system. It will determine when irrigation is needed, how much water is required, and offer guidance on canal operation. The system can change the current irrigation situation (keeping small flow for a long time) and effectively save water in Southern China. However, the system still needs further research on (1) response of yield decrease corresponding to insufficient irrigation, (2) monitoring station construction site selection problems, and (3) irrigation risk assessment and system universality improvement.