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Environmental controls of soil fungal abundance and diversity in Australia's diverse ecosystems
Soil Biology and Biochemistry ( IF 9.8 ) Pub Date : 2022-05-07 , DOI: 10.1016/j.soilbio.2022.108694
R.A. Viscarra Rossel 1 , Yuanyuan Yang 1 , Andrew Bissett 2 , Thorsten Behrens 3 , Kingsley Dixon 4 , Paul Nevil 4 , Shuo Li 5
Affiliation  

Soil fungi are vital for ecosystem functioning, but an understanding of their ecology is still growing. A better appreciation of their ecological preferences and the controls on the composition and distribution of fungal communities at macroecological scales is needed. Here, we used one of the most extensive continental-scale datasets on soil fungi and modelled the relative abundance of dominant fungal phyla and community diversity in Australian soils from forests, grasslands, shrublands, woodlands, and croplands. Across these diverse ecosystems, the Ascomycota and Basidiomycota dominate Australian soils, and fungal diversity declines as climates become more arid. Climate and the water balance exert dominant control on soil fungal abundance and diversity, mediated by interactions between ecosystem type, the ensuing vegetation and edaphic factors, such as organic matter, clay and iron-oxide mineralogy, pH and nutrients. Soil organic matter and mineralogy, represented by absorptions of visible–near-infrared (vis–NIR) radiation, helped to improve characterisation of the abiotic controls on soil fungi. This better representation of edaphic factors improved the predictability of the models by up to 40%. Our findings contribute to the understanding of fungal ecology at a macroecological scale. They help to appreciate better the links between fungi, soil and the environment, which underpin ecosystem stability and resilience and have implications for developing strategies for preservation, adaptation and mitigation of global change.



中文翻译:

澳大利亚多样化生态系统中土壤真菌丰度和多样性的环境控制

土壤真菌对生态系统功能至关重要,但对其生态学的了解仍在不断增长。需要更好地了解它们的生态偏好以及在宏观生态尺度上对真菌群落组成和分布的控制。在这里,我们使用了最广泛的大陆尺度土壤真菌数据集之一,并模拟了来自森林、草原、灌木地、林地和农田的澳大利亚土壤中优势真菌门的相对丰度和群落多样性。在这些多样化的生态系统中,子囊菌门和担子菌门在澳大利亚土壤中占主导地位,随着气候变得更加干旱,真菌多样性下降。气候和水平衡对土壤真菌丰度和多样性起主导控制作用,由生态系统类型、随之而来的植被和土壤因子之间的相互作用介导,例如有机物、粘土和氧化铁矿物学、pH 值和营养物质。以吸收可见-近红外 (vis-NIR) 辐射为代表的土壤有机质和矿物学有助于改进对土壤真菌的非生物控制的表征。这种对土壤因素的更好表示将模型的可预测性提高了 40%。我们的研究结果有助于在宏观生态学尺度上理解真菌生态学。它们有助于更好地理解真菌、土壤和环境之间的联系,这些联系支撑着生态系统的稳定性和复原力,并对制定保护、适应和缓解全球变化的战略产生影响。以吸收可见 - 近红外(vis-NIR)辐射为代表,有助于改善对土壤真菌的非生物控制的表征。这种对土壤因素的更好表示将模型的可预测性提高了 40%。我们的研究结果有助于在宏观生态学尺度上理解真菌生态学。它们有助于更好地理解真菌、土壤和环境之间的联系,这些联系支撑着生态系统的稳定性和复原力,并对制定保护、适应和减缓全球变化的战略产生影响。以吸收可见 - 近红外(vis-NIR)辐射为代表,有助于改善对土壤真菌的非生物控制的表征。这种对土壤因素的更好表示将模型的可预测性提高了 40%。我们的研究结果有助于在宏观生态学尺度上理解真菌生态学。它们有助于更好地理解真菌、土壤和环境之间的联系,这些联系支撑着生态系统的稳定性和复原力,并对制定保护、适应和减缓全球变化的战略产生影响。我们的研究结果有助于在宏观生态学尺度上理解真菌生态学。它们有助于更好地理解真菌、土壤和环境之间的联系,这些联系支撑着生态系统的稳定性和复原力,并对制定保护、适应和减缓全球变化的战略产生影响。我们的研究结果有助于在宏观生态学尺度上理解真菌生态学。它们有助于更好地理解真菌、土壤和环境之间的联系,这些联系支撑着生态系统的稳定性和复原力,并对制定保护、适应和缓解全球变化的战略产生影响。

更新日期:2022-05-07
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