非参数的Mann-Kendall检验法广泛应用于水文,气候,化学,矿物成分检验等各个方面。尤其是对气候水文要素时间序列显著性检验,定量反映变化趋势的显著性。D2=0D3=COUNTIF(C$2:C2,&C3)-COUNTIF(C$2:C2,&C3)D3复制至D4…D13G3==SUM(D2:D13)G4=A13G5==(G4*(G4-1)*(2*G4+5))/18G6==IF(G30,(G3+1)/SQRT(G5),IF(G30,(G3-1)/SQRT(G5),0))G7=0.05G8==ABS(G6)I8==NORM.S.INV(1-G7/2)H8==IF(G8I8,,)F9==IF(H8=,IF(G60,拒绝虚无假设(有显著下降趋势),拒绝虚无假设(有显著上升趋势)),接受虚无假设(没有显著趋势))050100150200250300350400450500JanFebMarAprMayJunJulAugSepOctNovDecdatamonth