GIS-BASED DISASTER WARNING SYSTEM OF LOW TEMPERATURE AND SPARE SUNLIGHT IN GREENHOUSE

摘要

The disaster that low temperature and spare sunlight occurred in North China is a major weather hazards to the sunlight greenhouse vegetable growing. The establishment of disaster warning system of low temperature and spare sunlight for greenhouse is of great significance to the disaster mitigation and prevention. According to the climate characteristics of Hebei Province and regional distribution of greenhouse, under the support of GIS and computer technology, using C/S structure, the early warning system was developed with multi- functions such as data acquisition automatically, disaster early warning, documentation services generating, early warning test and so on. This paper introduced briefly about the system operating environment, structure, function, operational process, as well as disaster warning results displaying. Operational applications showed that GIS-based system can describe the occurrence, distribution and intensity of disasters objectively, also provide a scientific basis for disaster prevention and mitigation.