Biological Soil Crusts, Plant Functional Groups, and Soil Parameters in Arid Areas of Iran

IF 0.4 4区环境科学与生态学 Q4 ECOLOGY

Polish Journal of Ecology Pub Date : 2019-02-12 DOI:10.3161/15052249PJE2018.66.4.003

Mahvan Hassanzadeh Bashtian, A. Sepehr, M. Farzam, M. Bahreini

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Abstract

ABSTRACT Biological soil crusts (BSCs) have a vital role regarding vegetation and soil development in arid and semi-arid areas in the world, and apparently in Iran, where they comprise more than 85% of the land. In this research, the relationship between BSCs and plant functional groups, considering soil parameters along an arid alluvial fan located in Khorasan Razavi province in northeastern Iran, was examined. The sampling carried out in summer, systematically from apex towards base part of alluvial fan, using a 0.25 m2 quadrat over a 5-cm thick soil surface. Surface levels were classified into three categories: apex, middle, and base. At each level, 16 samples were taken; in total 48 samples were collected along the alluvial fan from the apex point to the base district. The results showed a strong relationship between BSCs and the soil surface features, and a weak correlation between the plant functional group and soil parameters. BSCs indicated an ecological evolution from apex to the base geomorphic level by soil development; so that BSCs are more developed on the base of alluvial fan, but their diversity is reduced.

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伊朗干旱地区生物土壤结皮、植物功能群和土壤参数

摘要生物结皮（BSCs）在世界干旱和半干旱地区的植被和土壤发展中发挥着至关重要的作用，尤其是在伊朗，生物结皮占伊朗土地的85%以上。在这项研究中，考虑到伊朗东北部呼罗珊-拉扎维省干旱冲积扇沿线的土壤参数，考察了BSC与植物功能群之间的关系。在夏季进行的采样，从冲积扇的顶部向底部系统地进行，在5cm厚的土壤表面上使用0.25 m2的象限。表面标高分为三类：顶点、中间和底部。在每个级别上，采集了16个样本；沿冲积扇从顶点到基底区共采集了48个样品。结果表明，BSCs与土壤表面特征之间存在较强的相关性，而植物功能群与土壤参数之间的相关性较弱。BSCs表明，通过土壤发育，从顶部到底部地貌水平的生态演化；从而使BSC在冲积扇的基础上更加发育，但其多样性降低。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Polish Journal of Ecology 环境科学-生态学

CiteScore

1.10

自引率

0.00%

发文量

审稿时长

18-36 weeks

期刊介绍： POLISH JOURNAL OF ECOLOGY (formerly Ekologia polska) publishes original scientific research papers dealing with all aspects of ecology: both fundamental and applied, physiological ecology, evolutionary ecology, ecology of population, community, ecosystem, landscape as well as global ecology. There is no bias regarding taxons, ecosystems or geographical regions.