南北过渡带典型地区参考作物蒸散估算方法适用性评价

季霖菲　朱文静　陈东芳　钟楚雯　管其菲　王林亮　孙朋

摘 要：基于南北過渡带典型地区蚌埠市1954—2019年的气象观测资料，运用FAO-56 Penman- Monteith（PM56）、Irmak-Allen（IA）、Makkink（Ma）和Priestley-Taylor（PT）等4种方法估算各站点参考作物蒸散量（ET0）。以PM56计算结果为标准，利用线性回归法（R）、均方根误差（RMSE）等不同数据模型开展蚌埠市年、月尺度蒸散计算精度评价。结果表明：年尺度上，PT法存在较大误差，IA法相关性较差，均不适于研究区;月尺度上，IA法在2月、5月、7—9月，Ma法在1—2月、10—12月，PT法在1—2月、11—12月适用性较好，其余月份误差较大。

关键词：参考作物蒸散;适用性评价;南北过渡带;蚌埠市

中图分类号 S161.4文献标识码 A文章编号 1007-7731（2021）17-0186-03

Adaptation Evaluation for Reference Evapotranspiration Calculation Methods in the Typical Area of North-South Transion Zone

JI Linfei et al.

（School of Environmental and Surveying Engineering， Suzhou University， Suzhou 234000， China）

Abstract： Based on the meteorological observation data of Bengbu，a typical area of North-South transition zone，from 1954 to 2019， four methods were used to estimate the reference evapotranspiration （ET0） of this station， including FAO-56 Penman-Monteith（PM56），Irmak Allen（IA）， Makkink（Ma） and Priestley-Taylor （PT）.Taking computed result of PM56 as the standard，the accuracy of annual and monthly evapotranspiration in Bengbu was evaluated by using different data models such as linear regression（R） and root mean square error（RMSE）.This results showed that：on the annual scale， PT method has a large error， and IA method has a poor correlation.Both of them are not suitable for the study area.On the monthly scale， IA method was applicable in February， May and July-September， MA in January-February and October-December， PT method in January-February and November-December， but the error was large in the other months. The results show that IA method is the best.

Key words： Reference crop evapotranspiration; Applicability evaluation; North-South transition zone; Bengbu City