黄河中游区水、沙变化趋势及其预测
THE TENDENCY AND PREDICTION OF WATER AND SEDI-MENT AT THE MIDDLE REACHES OF THE HUANGHE RIVER
胡荣轩, 毛荣生, 陈小红 . 黄河中游区水、沙变化趋势及其预测[J]. 地理学报, 1992 , 47(4) : 315 -324 . DOI: 10.11821/xb199204003
Key words: Grey model; Double summation Curve; Second order summation curve
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