American Journal of Environmental Science and Engineering

Volume 4, Issue 1, March 2020

  • Assessment and Mapping of Soil pH and Available Phosphorus Status in Wuchale District, North Shewa Zone, Oromia

    Endale Bedada, Ajema Lemma, Wubalem Abera, Abera Donis, Dereje Girma

    Issue: Volume 4, Issue 1, March 2020
    Pages: 1-6
    Received: 19 March 2020
    Accepted: 7 April 2020
    Published: 29 April 2020
    Abstract: The lack of site specific fertilizer recommendation to replenish declining soil fertility has been the major challenge to boost crop production in Ethiopia. Therefore, an investigation was conducted on soil pH and Av. P status assessment and mapping at wuchale district. About One hundred sixty one (161) geo–referenced soil samples were collected by... Show More
  • Modification of AQI as an Effective Representation of Air Quality by Considering Weighting Factors

    Li Wei Lai, Wan Li Cheng

    Issue: Volume 4, Issue 1, March 2020
    Pages: 7-12
    Received: 18 April 2020
    Accepted: 9 May 2020
    Published: 28 May 2020
    Abstract: Controversy persists because residents in regions where air quality is poor are always dissatisfied with the presentation of the air quality index (AQI). To make management policies acceptable, it needs to be determined whether adding the various weighting factors can make the AQI more reasonable and practical. The authors selected three indices i.... Show More