Changes in soil carbon in response to flooding of the floodplain of a semi-arid lowland river

Autor: Warren L. Paul, Annaleise R. Klein, Gavin N. Rees, Jessica S. Wilson, Tara L. Pitman, Darren S. Baldwin
Rok vydání: 2015
Předmět:
Zdroj: Freshwater Science. 34:431-439
ISSN: 2161-9565
2161-9549
Popis: Soil C is a key factor influencing soil health and, by inference, ecosystem condition. In arid and semi-arid regions, soil moisture limits accumulation and decomposition of soil C. On floodplains, soil moisture can come from rainfall events or periodic flooding. The effect of flooding on soil C decomposition has received some attention in the literature but mostly through the study of agricultural systems or mesocosms. Field studies of actual floods are not common. We measured soil C response to a managed flood on a semi-arid lowland river floodplain in southeastern Australia before and after inundation at control (unflooded), floodplain (low hydraulic energy), and flood runner (high hydraulic energy) sites. At control sites, soil C changed little from before to 16 d after the onset of the flood. At flooded sites, most measures of soil C (total soil organic matter [floodplain sites only], permanganate-oxidizable C, persulfate-extractable C, water-extractable C [flood runner sites only], microbial ...
Databáze: OpenAIRE
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