Počet záznamů: 1

Proximal and distal control by pH of denitrification rate in a pasture soil

  1. 1.
    0361528 - BC-A 2012 RIV NL eng J - Článek v odborném periodiku
    Čuhel, Jiří - Šimek, Miloslav
    Proximal and distal control by pH of denitrification rate in a pasture soil.
    Agriculture, Ecosystems and Environment. Roč. 141, 1-2 (2011), s. 230-233 ISSN 0167-8809
    Grant CEP: GA AV ČR IAA600660605; GA MŠk LC06066
    Grant ostatní: Grantová agentura Jihočeské univerzity(CZ) GAJU 142/2010/P
    Výzkumný záměr: CEZ:AV0Z60660521
    Klíčová slova: denitrification * pH * nitrous oxide
    Kód oboru RIV: EH - Ekologie - společenstva
    Impakt faktor: 3.004, rok: 2011

    Soil pH can influence denitrification both proximally and distally. Proximal control by pH involves direct changes in denitrification reductase activity while distal control by pH involves changes in the denitrifier community, which is a key component affecting the denitrification rate. The current study separated the proximal and distal control by pH of the denitrification rate and of the relative proportion of two denitrification gas products (N2O and N2). The potential denitrifying enzyme activity (DEA) was measured in the presence or absence of acetylene in three pasture soils differing in pH management in the field. The pH of these soils was further manipulated just before DEA measurement to determine the effect of short-term changes in pH. DEA was driven by the pH management in the field rather than by current pH resulting from short-term changes in pH.
    Trvalý link: http://hdl.handle.net/11104/0198825