Spatio-Temporal Variability and Trends of Penman-Monteith Reference Evapotranspiration (FAO-56) in 1971-2010 under Climatic Conditions of Poland (vol 23, pg 2083, 2014)

被引:0
作者
Labedzki, Leszek
Bak, Bogdan
Smarzynska, Karolina
机构
[1] Institute of Technology and Life Sciences, Kujawsko-Pomorski Research Center, Glinki 60, Bydgoszcz
来源
POLISH JOURNAL OF ENVIRONMENTAL STUDIES | 2015年 / 24卷 / 01期
关键词
Climate change; Crop water requirement; Evapotranspiration; Irrigation; Observed trend;
D O I
10.15244/pjoes/27816
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The trends of the seasonal (April-September) and monthly reference evapotranspiration time series were analyzed using linear regression. In addition, the trends of air temperature and sunshine hours also were investigated to show possible causes of the increase in reference evapotranspiration. The spatial variability of reference evapotranspiration was lower than the temporal variability and is similar to the spatial distribution of precipitation in the area of Poland. The highest reference evapotranspiration was recorded in the region with the lowest rainfall. The statistically significant linear increasing trends of reference evapotranspiration were determined at each analyzed station in 1971-2010. The increase in the growing season sum of reference evapotranspiration, averaged over 18 stations, was 30 mm per 10 years. The significant increase in reference evapotranspiration can be explained by the statistically significant increasing trends of air temperature and sunshine hours. © 2014, HARD Publishing Company. All rights reserved.
引用
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页码:439 / 439
页数:1
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  • [1] Labedzki L, 2014, POL J ENVIRON STUD, V23, P2083