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Determination and application of the dynamic drought-monitoring indexes for agriculture in Gansu province
Author(s): 
Pages: 144-148,156
Year: Issue:  1
Journal: AGRICULTURAL RESEARCH IN THE ARID AREAS

Keyword:  农业干旱动态监测干旱指标土壤含水量甘肃省;
Abstract: 用降水量、灌溉量、蒸发量、前期土壤湿度等因素建立计算武威、定西、西峰、成县四个代表站0~50 cm土壤总含水量模拟递推方程,计算逐旬土壤湿度,根据不同气候区各旱涝级别的指标值,判断农业干旱的发生发展过程.结果表明,该模型能较准确地监测出甘肃省不同气候区农业干旱的动态变化趋势,效果良好,用土壤含水量能较准确地反映农业的旱涝状况.
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