CAJ | 학술논문

各类潜在蒸散发经验估算法具有区域性的特点，实际运用时需要进行修正。常用的修正方法是通过线性回归法对经验公式的计算结果进行修正，并没有将修正反映到经验公式中的系数上。本研究提出一种系数修正的方法，通过逐月误差比例校正来修正经验公式中的参数，称之为误差比例校正法。以FAO推荐的Penman-Monteith法为标准，比较经线性回归法、误差比例校正法2种方法修正前后6种经验估算法（ Blaney-Criddle、 Hargreaves、 Hamon、 Mak-kink、 Priestley and Taylor、 Rohwer ）在闽江流域的计算精度，从而对误差比例校正法的修正效果及稳健性进行探讨。结果表明：逐月误差比例校正法整体上具有较好的修正效果，可以较大程度提高6种经验方法在该区域的计算精度；常用的线性回归法虽计算较误差比例校正法稍复杂，但其修正效果及稳健性略优于误差比例校正法。
각류잠재증산발경험고산법구유구역성적특점，실제운용시수요진행수정。상용적수정방법시통과선성회귀법대경험공식적계산결과진행수정，병몰유장수정반영도경험공식중적계수상。본연구제출일충계수수정적방법，통과축월오차비례교정래수정경험공식중적삼수，칭지위오차비례교정법。이FAO추천적Penman-Monteith법위표준，비교경선성회귀법、오차비례교정법2충방법수정전후6충경험고산법（ Blaney-Criddle、 Hargreaves、 Hamon、 Mak-kink、 Priestley and Taylor、 Rohwer ）재민강류역적계산정도，종이대오차비례교정법적수정효과급은건성진행탐토。결과표명：축월오차비례교정법정체상구유교호적수정효과，가이교대정도제고6충경험방법재해구역적계산정도；상용적선성회귀법수계산교오차비례교정법초복잡，단기수정효과급은건성략우우오차비례교정법。
As the application of different empirical equations for computing potential evapotranspira-tion ( ET0 ) has been regionally restricted , modification is needed .A commonly used modification method is to correct the results of empirical equations by liner regression without amending their coeffi -cients .This study is providing a new way to modify the coefficients using monthly relative error correc-tion, namely the relative error modification method .To study the effect and stability of the relative er-ror modification method, six different representative empirical equations , including those of Blaney-Criddle, Hargreaves, Hamon, Makkink, Priestley-Taylor and Rohwer , were compared with Penman-Monteith equation which was set as the standard for testing the effect of applicability and the stability for each equation in Minjiang River Basin .The results showed that 1 ) performances of the six empiri-cal equations could be significantly improved by the relative error modification method , and 2 ) the commonly used linear regression method performed a little better than the relative error correcting meth -od though it was a bit more complicated than the relative error modification method .