| Autor: |
Attah, Ubuoh Emmanue, Chinwendu, Ofoegbu Clara, Ekene, Boise |
| Předmět: |
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| Zdroj: |
Jordan Journal of Earth & Environmental Sciences; Jun2022, Vol. 13 Issue 2, p130-145, 16p |
| Abstrakt: |
The study assessed soil nutrients and heavy metals in agricultural soils along Nworie River watershed at three depths: 0 - 15, 15 - 30, and 30 - 45cm. The results indicated that the soil was predominantly sandy with a moderate acidity of 5.2. Except for base saturation, other physicochemical parameters were below the WHO/FAO critical limits. Ratings of soil nutrients in agricultural soils recorded low nitrogen, moderate available P, very low to low exchangeable K+, and low to moderate exchangeable Ca+. Positive and negative correlations exist between physicochemical characteristics and heavy metals. Geo-accumulation (I-geo) ranges from uncontaminated to moderately contaminated. The pollution load index (PLI) recorded = 1 signifying no pollution. The potential risk factors (prf) ranged from low potential to considerably potential risks in order of Cd = Pb = Cu = Zn = Cr. The potential ecological risk index and risk assessment code examined indicated that of the metals sampled, Cd posed the most significant environmental risk associated with complex human activities like indiscriminate application of inorganic fertilizer, waste disposal, and ill-farming practices along the slopes of the watershed. Therefore, anthropogenic sources that degraded agricultural soils within the watershed should be avoided through enforcement of the existing environmental laws. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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