Assessing Soil Microbial Catabolic Diversity in Alder and Oak Plantations at Varying Developmental Stages

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-07-19 DOI:10.1139/cjfr-2023-0249

M. K. Parsapour, Y. Kooch, Seyed Mohsen Hosseini, Seyed Jalil Alavi

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Abstract

To assess the impact of forest plantations on soil microbial catabolic diversity, this study investigated the microbial response to the addition of various carbon-rich substrates in different ages of forest plantations and compared catabolic diversity between a nitrogen-fixing tree species (Alder, Alnus subcordata C. A. M.) and a non-nitrogen-fixing one (Oak, Quercus castaneifolia C. A. M.). The diversity indices (Simpson and Shannon diversity indicies) and Shannon evenness index demonstrated higher values in the oldest plantations than the youngest ones. In younger plantations (15 and 20 years old), oak stands exhibited higher microbial diversity compared to alder stands. However, at 25 years old, alder plantation displayed greater diversity than the oak plantation, as indicated by higher values for the Shannon diversity index (2.77), Simpson diversity index (0.93), and Shannon evenness index (0.89). Forest plantations with alder and oak species significantly enhanced catabolic evenness and diversity, thereby increasing the soil capacity to decompose organic matter and the resilience of the soil to disturbance. This this study highlights the influence of forest plantations on soil microbial catabolic diversity, demonstrating the potential of diverse tree species to promote soil health and resilience through enhanced functional complexity.

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评估不同发育阶段桤木和橡树种植园的土壤微生物分解代谢多样性

为了评估人工林对土壤微生物分解代谢多样性的影响，本研究调查了不同树龄人工林中微生物对添加各种富碳基质的反应，并比较了固氮树种（桤木，Alnus subcordata C. A. M.）和非固氮树种（橡树，Quercus castaneifolia C. A. M.）之间的分解代谢多样性。多样性指数（辛普森多样性指数和香农多样性指数）和香农均匀度指数显示，最老的人工林的数值高于最年轻的人工林。在较年轻的人工林（15 年和 20 年）中，橡树林的微生物多样性高于桤木林。然而，25 年树龄的赤杨林比橡树林显示出更高的多样性，这表现在香农多样性指数（2.77）、辛普森多样性指数（0.93）和香农均匀度指数（0.89）的数值更高。种植赤杨和栎树的人工林显著提高了分解均匀度和多样性，从而增强了土壤分解有机物的能力和土壤抗干扰能力。这项研究强调了植树造林对土壤微生物分解代谢多样性的影响，展示了多样化树种通过提高功能复杂性来促进土壤健康和恢复力的潜力。

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.