Dehydrogenase and catalase activity of soil irrigated with municipal wastewater

• Autorzy: Brzezinska M , Stepniewska Z. , Stepniewski W.
• Języki publikacji: EN

Abstrakty

EN

Dehydrogenase and catalase activities were measured in a Eutric Histosol irrigated with municipal wastewaters (Lublin, Poland) purified by a two-step (mechanical and biological) treatment. Soil enzyme activity was used to test the biochemical status of the soil-plant system, the last step of wastewater purification. Three experimental fields, each of I ha area, were planted with Populus nigra, Salix americana, and grasses (with Alopecurus pratensis, Phalaris arundinacea, Festuca pratensis as dominating species). The fields were divided into three parts: not flooded control (A), flood-irrigated 10 times per year with 60-75 mm (B), and flood-irrigated 10 times per year with 120-150 mm (C) of wastewater per irrigation. The enzyme activity was measured several times during the first 2 years of wastewater application in soil sampled from control and flooded plots (0-10, 10-30, 30-50, 50-70 cm depth). Simultaneously, redox potential at the same depths was measured with permanently installed Pt electrodes. Irrigation with municipal wastewater elevated soil dehydrogenase activity on average by 44% and 27% for the low and high irrigation doses, respectively, but reduced catalase activity at the high irrigation dose on average by 12.4% (significant at P < 0.001). Plant cover significantly influenced soil dehydrogenase and catalase activities.

Słowa kluczowe

EN

catalase activity; waste water; Poland; soil; municipal waste water; redox potential; Lublin city; dehydrogenase activity

• Wydawca: -
• Czasopismo: Polish Journal of Environmental Studies
• Rocznik: 2001
• Tom: 10
• Numer: 5
• Opis fizyczny: p.307-311,fig.,ref.

Twórcy

autor

Brzezinska M

• Polish Academy of Sciences, Doswiadczalna 4, 20-290 Lublin 27, Poland

autor

Stepniewska Z.

autor

Stepniewski W.

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