Journal of Food, Agriculture and Environment

The changes of the filtration of precipitation in soil in southeastern Lithuania under the influence of climate conditions 

Author(s):

Liudmila Tripolskaja, Ingrida Verbyliene, Saulius Marcinkonis, Almantas Razukas, Eugenija Baksiene, Danuta Romanovskaja

Recieved Date: 2012-07-20, Accepted Date: 2012-10-06

Abstract:

Influence of climate conditions on change of a filtration of atmospheric precipitation in southwest Lithuania is analyzed. Filtration observations are carried out in lysimeters in Voke Branch of the Lithuanian Research Centre for Agriculture and Forestry in 1987-2007. Fixed, round, lysimeters (n = 11; each covering 1.75 m²) were packed (0.6 m depth) with a sandy loam soil. The period of 1987-2007 in southeastern Lithuania was characterized by increasing atmospheric precipitation. Increased precipitation amount and air temperature in winter (+1.3°C) and spring (+0.9°C) affected the regime of precipitation filtration in sandy loam soil. Compared with the averages of 1987-2007, during the period of 2003-2007 the average annual precipitation filtration increased by 59.1 m^-2 (18.2%). During the last period (2003-2007) the intensity of filtration during separate seasons of a year has changed. According to the average of 2003-2007, the tendency of increase in filtration during the spring period by 28.8% was established. More significant increase was recorded in March and May. During the summer period, filtration in comparison with the average data of 1987-2007 has increased by 50.2% and more strongly - in August. The change trend is described by function y = 0.7259x² - 14.354x + 86.803 R₂ = 0.2336. The regression analysis revealed the trend of atmospheric precipitation filtration change during autumn and winter periods; it shows filtration increase. During the period of 2003-2007, as compared with 1987-2007, the average precipitation filtration decreased by 8.3% in the autumn and by 10.4% in winter. 

Keywords:

Precipitation, filtration, climate conditions, sandy soils, lysimeters, seasons of the year

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Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 3&4
Category: Environment
Pages: 1359-1363

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