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Titel |
Assessing the use of treated waste water for irrigation agricultural lands by using soil quality indices |
VerfasserIn |
V. Arcenegui, A. Morugán, F. García-Orenes, R. Zornoza, J. Mataix-Solera, M. A. Navarro, C. Guerrero, J. Mataix-Beneyto |
Konferenz |
EGU General Assembly 2009
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Medientyp |
Artikel
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Sprache |
Englisch
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Digitales Dokument |
PDF |
Erschienen |
In: GRA - Volume 11 (2009) |
Datensatznummer |
250019885
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Zusammenfassung |
The use of treated wastewater for the irrigation of agricultural soils is an alternative to
utilizing better-quality water, especially in semiarid regions where water shortage is a very
serious problem. However, this practise can modify the soil equilibrium and affect its quality.
In this work two soil quality indices (models) are used to evaluate the effects of long-term
irrigation with treated wastewater in soil. The models were developed studying
different soil properties in undisturbed forest soils in SE Spain, and the relationships
between soil parameters were established using multiple linear regressions. Model
1, that explained 92% of the variance in soil organic carbon (SOC) showed that
the SOC can be calculated by the linear combination of 6 physical, chemical and
biochemical properties (acid phosphatase, water holding capacity (WHC), electrical
conductivity (EC), available phosphorus (P), cation exchange capacity (CEC) and
aggregate stability (AS)). Model 2 explains 89% of the SOC variance, which can be
calculated by means of 7 chemical and biochemical properties (urease, phosphatase, and |
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