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Variations of soil physicochemical properties and vegetation cover under different altitudinal gradient, western Hyrcanean forest, north of Iran

Author

Listed:
  • Hassan Pourbabaei
  • Ali Salehi

    (Department of Forestry, Faculty of Natural Resources, University of Guilan, Somehsara, Iran)

  • Sepide Sadat Ebrahimi

    (Department of Forestry, Faculty of Natural Resources, University of Guilan, Somehsara, Iran)

  • Fazel Khodaparasrt

    (Department of Forestry, Faculty of Natural Resources, University of Guilan, Somehsara, Iran)

Abstract

This study was done to quantify the amount of soil organic matter and to evaluate physicochemical properties and vegetation cover changes along the altitudinal gradient. Nine altitudinal transects were selected from 100 m a.s.l. to 1 700 m a.s.l. Then, 160 circular plots of 1 000 m2 area with a distance of 150 m from each other were studied. Soil texture, bulk density, particle density, soil base saturation, phosphorus and potassium values did not indicate any specific variation pattern. Whereas pH decreased powerfully, the highest and the lowest value of pH was measured at 100 m a.s.l. and 1 700 m a.s.l., respectively. Soil organic carbon content increased significantly with increasing altitude (P ≤ 0.01). Density of trees decreased dramatically from 100 to 900 m a.s.l., whereas this trend was ascending from 1 100 to 1 700 m a.s.l. Density of shrub species increased with increasing altitude along the gradient and the highest value was revealed at 1 300 m a.s.l. The highest percentage of herbaceous species cover was found at a lower altitude and a decreasing trend was found along the altitudinal gradient.

Suggested Citation

  • Hassan Pourbabaei & Ali Salehi & Sepide Sadat Ebrahimi & Fazel Khodaparasrt, 2020. "Variations of soil physicochemical properties and vegetation cover under different altitudinal gradient, western Hyrcanean forest, north of Iran," Journal of Forest Science, Czech Academy of Agricultural Sciences, vol. 66(4), pages 159-169.
    • Handle: RePEc:caa:jnljfs:v:66:y:2020:i:4:id:136-2019-jfs
    DOI: 10.17221/136/2019-JFS
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    References listed on IDEAS

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    1. David S Pescador & Francesco de Bello & Fernando Valladares & Adrián Escudero, 2015. "Plant Trait Variation along an Altitudinal Gradient in Mediterranean High Mountain Grasslands: Controlling the Species Turnover Effect," PLOS ONE, Public Library of Science, vol. 10(3), pages 1-16, March.
    2. Bijandra Kumar & Mohammad Asadi & Davide Pisasale & Suman Sinha-Ray & Brian A. Rosen & Richard Haasch & Jeremiah Abiade & Alexander L. Yarin & Amin Salehi-Khojin, 2013. "Renewable and metal-free carbon nanofibre catalysts for carbon dioxide reduction," Nature Communications, Nature, vol. 4(1), pages 1-8, December.
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