基于WebGIS的多指标灌溉信息管理系统

【目的】提高灌溉决策精度，实现水资源的高效利用。【方法】从精确灌溉的角度出发，采用系统工程和软件工程的原理和方法，将计算机、数据库、网络技术和地理信息系统等多种技术相融合，建立了以WebGIS为基础的多指标灌溉信息管理系统。【结果】以作物需水信息为基础，综合考虑土壤、作物、田间监测、灌排信息和气象等因素的影响，构建了单指标和多指标决策模型，利用SuperMap IS.NET的网络发布功能，将灌区信息、实时气象、作物需水量、有效降雨量、决策结果、土壤墒情分布等信息进行发布，实现信息的动态可视化表达。本系统可使操作人员既能够通过地图宏观了解灌区和决策结果的总体情况，又能对离散资料进行分析和整合。【结论】系统在人民胜利渠灌区和广利灌区推广应用的结果表明,系统的应用在一定程度上提高了灌溉管理水平和决策精度, 实现了灌溉管理与决策的智能化和信息化。

Multi-Index Irrigation Information Management System Based on WebGIS

【Objective】The objective of this study is to improve the precision of irrigation decision and high efficient utilization of water resources.【Method】Based on precise irrigation, a system for multi-index irrigation management was developed by using the principle and method of system engineering and software engineering, which mixed with various technologies, such as the computer, database, networks and geographic information system, etc. 【Result】Taking the crop water requirement as the foundation, the decision models of single factor and multiple factors were constructed through considering the influence of the soil, crop, field monitoring, irrigation and drainage information, meteorological factors and so on. The information data such as irrigation area, real-time meteorological factors, crop water requirements, effective rainfall, the decision results, and soil moisture distribution were published by using the function of SuperMap IS.net. The operation personnel could get the total situation of the irrigation district and the decision results through the map Also, the system could analyze and integrate the discrete data of irrigation district. 【Conclusion】 The system was applied in the irrigation district of the Renmin Shengli Canal and Guangli. The results showed that application of the system improved the irrigation management level and decision accuracy, and also realized the intelligence and information of irrigation management and decision.