Reference Evapotranspiration and the Factors Affecting It in Fenhe Irrigation District
LI Haijun
LIU Haijun
ZHANG Zhijun
Abstract：Climate change has a great impact on hydrological cycle and water resource management in catch-ments. Under standing the change in reference evapotranspiration (ET0) in a catchment can improve its water re-source management. In this paper, the change of ET0 in Fenhe Irrigation District and the factors affecting it were analyzed using long-term climatic data in this region. The results showed that the annual ET0 in Fenhe Irrigation District did not show a significant (P>0.05) change from 1951 to 2014, because the positive effect of the in-creased temperature and decreased relative humidity on ET0 was compensated for by the negative effect due to the decreased wind speed and sunshine time. Changes in temperature, relative humidity and wind speed affected ET0 considerably from April to June, while sunshine hours impacted ET0 from May to September. Our results can help to efficiently allocate water resources in Fenhe Irrigation District as well asin the Fen River basin.
Keywords：Fenhe irrigation districtclimate changereference evapotranspirationchange trendsensitive anal-ysis
Publication Date：2017-01-01
Online Publishing Date：2026-09-12(First online date of this platform, not the publication date of the document)
Pages：8( 86-93 )