Impacts of Precipitation Changes on Water Resources in Jiaodong Region, Shandong Province

35-year precipitation and water resources data (1960 -1994) in Jiaodong region are used. The precipitation data are divided into two periods by means of change-point analysis. Marked shifts between the two periods are revealed for both rainfall and water resources. The variation trends of precipitation and total amount of water resources are identical, but the former's varia tional rate is smaller than the latter's. The ground water has a sustaining feature. which means the end of drought in meteorology does not show the end of dry period in hydrology. The supply and demand analysis for the year of 2000 indicates that the utilization efficiency of water resources must be raised at least 30% in order to meet the needs of the economic development basically. The study is of practical importance and provites scientific basis for the rational exploitation and utilization of water resources and for the design of economic development plan in Jiaodong.

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