 ISSN 0235-7224 ISSN 2029-0586 (online) |
2009 m. Nr. 2 Comprehensive assessment of factors influencing the flow of water and substances in soils of natural forest ecosystems
The low level or air contamination in 1999–2007 allows to revise the relationship between changes of the chemical composition of natural water and the fluctuations of climate. Climate characteristics (duration of vegetation period), soil water flow and storage, filtration intensity and chemical composition were compared. Annual means of two integrated monitoring stations of natural territories in East and West Lithuania were used. Monthly means of soil water storage were related with soil water flow composition more closely than annual means. The increasing soil temperature was the most marked change in 1999–2007. Duration of negative soil temperature became shorter, being one of the reasons for intensified water filtration in soil and the increasing content of nitrates, total nitrogen and organic carbon flow. Keywords: vegetation period, duration of negative soil temperature, soil water, flow, storage, nitrogen, organic carbon, pH, filtration, intensity |
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