南北過渡帶典型地區參考作物蒸散估算方法適用性評價

季霖菲　朱文靜　陳東芳　鐘楚雯　管其菲　王林亮　孫朋

摘 要：基于南北過渡帶典型地區蚌埠市1954—2019年的氣象觀測資料，運用FAO-56 Penman- Monteith（PM56）、Irmak-Allen（IA）、Makkink（Ma）和Priestley-Taylor（PT）等4種方法估算各站點參考作物蒸散量（ET0）。以PM56計算結果為標準，利用線性回歸法（R）、均方根誤差（RMSE）等不同數據模型開展蚌埠市年、月尺度蒸散計算精度評價。結果表明：年尺度上，PT法存在較大誤差，IA法相關性較差，均不適于研究區;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月適用性較好，其余月份誤差較大。

關鍵詞：參考作物蒸散;適用性評價;南北過渡帶;蚌埠市

中圖分類號 S161.4文獻標識碼 A文章編號 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