期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 26, 期 28, 页码 28829-28841出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-019-06086-x
关键词
Forest species; Heavy metals; Salinity; Soil; TWW; Waterlogging
资金
- International Center for Biosaline Agriculture (ICBA, Dubai)
- Arab Center for the Studies of Arid zones and Dry lands (ACSAD, Syria)
- Ministry of Higher Education and Scientific Research in Tunisia
Irrigation with treated waste water (TWW) in combination with plantation of agroforest species was tested in the Kalaat Landelous region for the reclamation of salt affected soils. Five species (Atriplex nummularia, Eucalyptus gomphocephala, Acacia cyanophylla, Casuarina glauca, Pinus halepensis) were cultivated in saline soils that are affected by shallow, saline groundwater and were irrigated with TWW during the summer season. The results after 4 years of experimentation show a distinct decrease in soil pH and salinity accompanied by a decrease in Cl and Na concentrations. Irrigation decreased the heavy metal concentrations in the topsoil but an increase in deeper layers indicate to leaching due to TWW irrigation. The investigated plant species were differently affected in growth performance by salinity and TWW irrigation. Atriplex nummularia appeared to be the most resistant species and Pinus halepensis the most sensitive one to hydro-pedological conditions of the Kalaat Landelous plot. In conclusion, salt-tolerant plant species seem to be good candidates for the reclamation of salt-affected, waterlogged sites in combination with TWWirrigation, as the adaptations of such species seem to operate under different abiotic stress conditions.
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