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Type of publication: conference paper
Type of publication (PDB): Tezės kituose recenzuojamuose leidiniuose / Theses in other peer-reviewed publications (T1e)
Field of Science: Agronomija / Agronomy (A001)
Author(s): Volungevičius, Jonas;Vaisvalavičius, Rimantas;Amalevičiūtė, Kristina;Jakubauskaitė, Ieva;Mikučionienė, Daina;Šlepetienė, Alvyra
Title: Transformations of typical soil profile and organic matter in western lithuania agroecosystems
Is part of: Long-term Agroecosystem Sustainability: Links between Carbon Sequestration in Soils, Food Security and Climate Change : International scientific conference : AgroEco2016 : Programme and abstracts. Akademija, 2016
Extent: p. 80-81
Date: 2016
Keywords: Retisols;Agroecosystem;Soil tillage;Organic matter transformation
ISBN: 978-609-449-104-7
Abstract: Soil is a multicomponent and multifunctional system, with definable operating limits and a characteristic spatial configuration. Thus, the major challenge within sustainable soil management is to preserve soil multifunctionality for other ecosystem services while optimizing agricultural yields. The aim of the work is to determine the changes of morphological and chemical properties in Western Lithuania agroecosystems Retisols caused by their agrogenic transformation. Several methods used to study above mentioned transformations: a) particle size distribution of the soil particles in the liquid dispersion was determined using the light-scattering technique, b) soil pH was determined in 1M KCl (soil-solution ratio 1:2.5) using potentiometric method, c) soil organic carbon (SOC) content was determined by the Tyurin method modified by Nikitin (1999) with spectrophotometric measure procedure, d) mobile humic substances were extracted using 0.1M NaOH solution and determined according Ponomariova and Plotnikova (1980), e) water extractable organic carbon (WEOC) was determined in water extract (soil–water ratio 1:5) and measured by IR-detection method after UV-catalysed persulphate oxidation. Our study revealed a clear evidence of soil profile morphological and chemical changes to a depth of 40-50 cm, however, the most distinct transformations take place in the upper 30 cm layer of agrogenically changed Retisols. Thus, here it needs to be highlighted: when Ah horizon is deepening (by ploughing) from 10-15 cm up to 25-30 cm thick the El horizon becomes disturbed and partially incorporated/mixed into Ah horizon; the features of Ahp horizon changes Ah horizon and AhEl horizon develops (caused by soil deep loosening) at a later. Afterwards, due to the long-term deep plough practice and soil erosion (where it takes place)
Affiliation(s): Lietuvos agrarinių ir miškų mokslų centro Vėžaičių filialas
Lietuvos agrarinių ir miškų mokslų centro filialas Žemdirbystės institutas
Lietuvos agrarinių ir miškų mokslų centro Žemdirbystės institutas
Vilniaus universitetas
Vytauto Didžiojo universitetas
Žemės ūkio akademija
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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