Please use this identifier to cite or link to this item:https://hdl.handle.net/20.500.12259/93283
Type of publication: conference paper
Type of publication (PDB): Tezės kituose recenzuojamuose leidiniuose / Theses in other peer-reviewed publications (T1e)
Field of Science: Ekologija ir aplinkotyra / Ecology and environmental sciences (N012)
Author(s): Baležentienė, Ligita;Mikša, Ovidijus
Title: Environment Impact on Plant Respiration in Ecological Agroecosystems
Is part of: The vital nature sign [electronic resource] : 13th international scientific conference, May 16-17, 2019, Kaunas, Lithuania : abstract book / editors Nicola Tiso, Vilma Kaškonienė. Kaunas : Vytautas Magnus university, 2019, [no. 13]
Extent: p. 40-40
Date: 2019
Keywords: Plant respiration;Emissions;Environment;Crop
Abstract: Plant respiration forms small inputs to CO2 emissions in agroecosystem’ C cycle. Nonetheless, agricultural land area occupied 4889 Mha, and thus respirational emissions from agroecosystems became evident at global scale [1]. Agriculture and plant respiration are influenced by environment conditions such as temperature and precipitation [2]. This paper was aimed on the validation of effects of environment conditions on plant respiration in different crops of ecological farming. Investigations of soil respirational emissions in ley, wheat, vetch + oat mixture and barley + ley undercrop agroecosystems were carried out at the Training Farm of Agricultural Academy (former Aleksandras Stulginskis University) in 2014–2016. Plant respiration rates (R) depended on crop species and ranged between 0.354 μmol m-2 s-1 in ley and 1.593 μmol m-2 s-1 in wheat agroecosystems due to different biological peculiarities. The observed seasonal variation in respiration strongly correlated to environmental changes. Between them meteorological conditions generally forced the plant respiration rates. Optimal temperature stimulates biological processes, therefore a strong positive correlations were determined between plant respiration and air and soil temperature (r=0.3-0.6, p=0.004-0.01). While increased precipitation and soil moisture decreased temperature and compose anaerobic conditions in soil and thus had negative impact on respiration. Thus, negative correlation between plant respiration and precipitation and soil moisture confirmed this unfavourable impact
Internet: http://vns.microsep.org/wp-content/uploads/2019/05/Abstract-book_2019.pdf
Affiliation(s): Miškų ir ekologijos fakultetas
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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