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利用黄河上游宁蒙灌区近 5 0年气温、降水资料 ,分析揭示了气候干暖化的趋势 ,根据气温、降水和灌溉面积与耗水量的关系 ,建立了气候因素和灌溉面积等其他因素与耗水量的关系式 ,计算分析了近 2 0年气候因素和其他因素变化对灌溉耗水量的影响
The temperature and precipitation data of Ningmeng Irrigation District in the upper reaches of the Yellow River in the past 50 years have been analyzed to reveal the trend of climate warming and precipitation. Based on the relationship between temperature, precipitation and irrigated area and water consumption, other factors such as climatic factors and irrigated area and consumption The relationship between water consumption and irrigation water consumption is calculated and analyzed in the light of the change of climatic factors and other factors in recent 20 years