气候条件的变化导致半干旱橡树林中丛枝菌根真菌的多样性和组成发生变化

IF 3.4 2区 农林科学 Q1 FORESTRY
Nahid Jafarian, Javad Mirzaei, Reza Omidipour, Yahya Kooch
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引用次数: 0

摘要

丛枝菌根真菌(AMF)在植物生产力和生态系统功能中发挥着至关重要的作用。然而,它们对非生物因素(即气候、地貌和土壤特性)的反应尚不清楚,尤其是在干旱和半干旱生态系统中的气候梯度和坡度方面。本研究利用 60 个复合土壤样本,研究了气候因素和坡度对 AMF 多样性、组成和孢子密度的直接和间接影响。研究结果表明,与坡度(P = 0.449)相比,气候对土壤性质的影响更为直接(P < 0.001)。相比之下,气候对 AMF 的多样性和组成有很大影响,干旱地区的多样性最高。土壤 pH 值与 AMF 多样性的不同方面相关性最高。结构方程模型(SEM)表明,AMF 多样性和孢子密度的变化只有一小部分可以用气候特征、坡度和土壤特性来解释。根据 SEM 的结果,气候是决定 AMF 多样性和孢子密度的最重要因素;坡度的作用较小。结果表明,AMF 多样性的变化来自气候的直接影响和土壤化学性质的间接影响。此外,随着干燥度的增加,孢子和 AMF 多样性也在增加。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Changes in climatic conditions drive variations in arbuscular mycorrhizal fungi diversity and composition in semi-arid oak forests

Changes in climatic conditions drive variations in arbuscular mycorrhizal fungi diversity and composition in semi-arid oak forests

Arbuscular mycorrhizal fungi (AMF) play a vital role in plant productivity and ecosystem functions. However, their responses to abiotic factors (i.e., climate, physiography, and soil properties) are unknown, especially across climatic gradients and slope aspects in arid and semi-arid ecosystems. In this study, using 60 composite soil samples, direct and indirect effects of climate factors and slope aspects on AMF diversity, composition and spore density were studied. The findings indicate that climate has a more direct influence on soil properties (P < 0.001) in comparison to slope aspect (P = 0.449). In contrast, climate significantly affected AMF diversity and composition, with the highest diversity in dryer areas. Soil pH had the highest correlation with different facets of AMF diversity. Structural equation modeling (SEM) indicated that only a small part of the variation in AMF diversity and spore density could be explained by climate characteristics, slope aspect and soil properties. Based on SEM results, climate was the most important determinant of AMF diversity and spore density; slope aspect had a less critical role. The outputs suggest that variations in AMF diversity are derived by the direct effects of climate and the indirect effect of soil chemical properties. In addition, with increasing dryness, sporulation and AMF diversity increased.

Graphical Abstract

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来源期刊
CiteScore
7.30
自引率
3.30%
发文量
2538
期刊介绍: The Journal of Forestry Research (JFR), founded in 1990, is a peer-reviewed quarterly journal in English. JFR has rapidly emerged as an international journal published by Northeast Forestry University and Ecological Society of China in collaboration with Springer Verlag. The journal publishes scientific articles related to forestry for a broad range of international scientists, forest managers and practitioners.The scope of the journal covers the following five thematic categories and 20 subjects: Basic Science of Forestry, Forest biometrics, Forest soils, Forest hydrology, Tree physiology, Forest biomass, carbon, and bioenergy, Forest biotechnology and molecular biology, Forest Ecology, Forest ecology, Forest ecological services, Restoration ecology, Forest adaptation to climate change, Wildlife ecology and management, Silviculture and Forest Management, Forest genetics and tree breeding, Silviculture, Forest RS, GIS, and modeling, Forest management, Forest Protection, Forest entomology and pathology, Forest fire, Forest resources conservation, Forest health monitoring and assessment, Wood Science and Technology, Wood Science and Technology.
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