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Analysis of the Spatial Variability of Soil Texture in a Tropical Highland: The Case of the Jema Watershed, Northwestern Highlands of Ethiopia

Author

Listed:
  • Mintesinot Taye

    (Institute of Disaster Risk and Food Security Studies, Bahir Dar University, Bahir Dar 5501, Ethiopia)

  • Belay Simane

    (College of Development Studies, Addis Ababa University, Addis Ababa 11079, Ethiopia)

  • Yihenew G. Selsssie

    (College of Agriculture and Environmental Sciences, Bahir Dar University, Bahir Dar 5501, Ethiopia)

  • Benjamin Zaitchik

    (Department of Earth and Planetary Sciences, Johns Hopkins University, Baltimore, MD 21218, USA)

  • Shimelis Setegn

    (Environmental and Occupational Health, Florida International University, 11200 S.W. 8th St., Miami, FL 33199, USA)

Abstract

This study sought to analyze the degree of spatial association of soil texture with agro-climatic zones and slope classes on the farmlands of the Jema watershed, in the Northwestern Highlands of Ethiopia. The agro-climatic zones (elevation zones) determine the micro-climate and biota of the study area. Thirty six soil composite samples for texture (the proportion of clay, silt and sand) analysis from four agro-climatic (elevation) zones and seven slope classes were collected. One-Way-ANOVA was employed to compute the mean variability of texture among the identified terrain classes, and linear regression was used to analyze the degree of association between texture and the terrain attributes. The measured values of sand, silt and clay in the watershed ranged from 11.4 to 43.4, 6.0 to 34.8, and 21.8 to 77.8, respectively. The One-Way-ANOVA indicated a significant ( p < 0.05) soil texture variation in both slope and agro-climatic zone classes. Heavy clay, clay and clay loam were identified as the major texture classes in the lower, middle and upper parts of the watershed, respectively. The regression analysis showed that texture was more influenced by the difference in the elevation values than in slope values in the watershed. The standardized beta coefficients of slope and elevation for clay particles were 0.499 and 0.767, respectively. For sand, the regression coefficients for slope and agro-climatic zone were 0.485 and 0.812, respectively. This implies that an interactive effect of micro-climate and biota governed by elevation influenced the spatial distribution of soil texture more than slope.

Suggested Citation

  • Mintesinot Taye & Belay Simane & Yihenew G. Selsssie & Benjamin Zaitchik & Shimelis Setegn, 2018. "Analysis of the Spatial Variability of Soil Texture in a Tropical Highland: The Case of the Jema Watershed, Northwestern Highlands of Ethiopia," IJERPH, MDPI, vol. 15(9), pages 1-10, September.
    • Handle: RePEc:gam:jijerp:v:15:y:2018:i:9:p:1903-:d:167145
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    References listed on IDEAS

    as
    1. Belay Simane & Benjamin Zaitchik & Jeremy Foltz, 2016. "Agroecosystem specific climate vulnerability analysis: application of the livelihood vulnerability index to a tropical highland region," Mitigation and Adaptation Strategies for Global Change, Springer, vol. 21(1), pages 39-65, January.
    2. Belay Simane & Benjamin F. Zaitchik & Desalegn Mesfin, 2012. "Building Climate Resilience in the Blue Nile/Abay Highlands: A Framework for Action," IJERPH, MDPI, vol. 9(2), pages 1-22, February.
    3. Benjamin F. Zaitchik & Belay Simane & Shahid Habib & Martha C. Anderson & Mutlu Ozdogan & Jeremy D. Foltz, 2012. "Building Climate Resilience in the Blue Nile/Abay Highlands: A Role for Earth System Sciences," IJERPH, MDPI, vol. 9(2), pages 1-27, January.
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    Cited by:

    1. Renwei Chen & Xiaoyu Zhang & Yu Yang & Yonge Yang & Jing Wang & Hongying Li, 2023. "Analyses of Vineyard Microclimate in the Eastern Foothills of the Helan Mountains in Ningxia Region, China," Sustainability, MDPI, vol. 15(17), pages 1-18, August.
    2. Belayneh Dessie & Mintesinot Taye & Zablon Adane & Ayana Jember, 2022. "Analysis of soil carbon and income over Acacia decurrens and Eucalyptus globulus land uses in the highlands of Ethiopia," Journal of Environmental Studies and Sciences, Springer;Association of Environmental Studies and Sciences, vol. 12(4), pages 815-826, December.

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