Adaptability between Agricultural Irrigation and Groundwater Carrying Capacity in Central Hebei Piedmont Plain
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Abstract:
Aiming at the problems of the water resources shortage and serious groundwater overexploitation for agricultural irrigation in the central Hebei piedmont plain, based on the precipitation, water resources and agricultural irrigation data since 1978, the evaluation index system and the evaluation method for the adaptability between agricultural irrigation and groundwater carrying capacity were established at an accuracy of 0.49 km2 by applying the earth science module concept, equilibrium theory and MapGIS technology. Evaluation results showed that the agricultural irrigation water intensity was in "serious incommensurate" status in most areas of the Hebei Taihang Piedmont Plain and the agricultural irrigation water was in "very serious incommensurate" state in most groundwater overdraft areas of Hebei plain, in which the summer crops such as wheat crop had an irrigation water intensity of more than 50%, and the ratio of the irrigation water strength of the vegetable crop and the consumption fruit trees in total agricultural irrigation water increases showed a significant percentage increase trend. We should avoid this kind of irrational continuous increase.
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