| Summary: | 碩士 === 國立中興大學 === 土木工程學系所 === 99 === This study analyzed by Changhua Irrigation District irrigation water under the impact of climate change, the change in water demand periods. In this study, Changhua Irrigation Association Shetou and Dacheng Workstation years 1965 to 1990, collected rainfall data, combined with the date of Taichung weather station temperature data. Use the TaiWAP of agricultural irrigation water demand model to IPCC SRES scenarios, through the weather data generator to generate future climate change conditions of temperature and rainfall, simulated assessment of climate change under the change in the amount of irrigation water demand. The results show that the trend of growing period was shorter, resulting in two for the early harvest, some results also showed that one for the February, March and May, because the increase in crop water requirements, water levels may increase. The results show that the future rainfall under the influence of climate change presents an increasing trend, but in the dry season compared to the current situation and trends in order to reduce significantly in the wet season, rainfall is more concentrated in the next wet period showed uneven distribution of rainfall The situation is more serious, shows the future use of water resources is bound to be more difficult
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