Soil nutrient supply and tree species drive changes in soil microbial communities during the transformation of a multi-generation Eucalyptus plantation

Xu, Yan; Ren, Shengxiang; Liang, Yanfang; Du, Apeng; Li, Chao; Wang, Zhichao; Zhu, Wenxu; Wu, Lichao

doi:10.1016/j.apsoil.2021.103991

Cited by 43 publications

(37 citation statements)

References 70 publications

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“…8). Similar conclusions were reported in previous studies concerning soil N and P concentrations (Zhu et al 2019;Xu et al 2021). This study also found that transforming the third-generation Eucalyptus plantation into a mixed system EC produced a significant improvement in soil nutrient levels compared to the mixed system EH and the third-generation Eucalyptus plantations (E), while EH and E nutrient levels were insignificant.…”

Section: Variations In Soil Chemical Properties and Enzyme Activitysupporting

confidence: 92%

“…With these enzymes, C, N and P in organic matter are released and transported to plants or utilized by microorganisms (Gu et al 2009;Margalef et al 2017). Previous studies have shown that soil extracellular enzyme activity is positively related to organic matter concentration (Zhu et al 2020;Xu et al 2021), which is consistent with this study. Both the CK and EC plantings showed higher soil enzyme activity, which might be attributed to greater organic matter, total N, and available P concentrations to help form enzyme-humus complexes, thereby maintaining enzyme activity and delaying decomposition (Bastida et al 2012).…”

Section: Variations In Soil Chemical Properties and Enzyme Activitysupporting

confidence: 92%

“…Many non-legumes, broad-leaved species, such as Cinnamomum camphora (L.) J. Presl. and Castanopsis hystrix Miq., have been introduced into monoculture Eucalyptus plantations due to their excellent wood properties and adaptability to humid and acidic soil (Guo et al 2018;Xu et al 2021).…”

Section: Introductionmentioning

confidence: 99%

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Effects of enrichmemt planting with native tree species on bacterial community structure and potential impact on Eucalyptus plantations in southern China

Zhu

et al. 2022

J. For. Res.

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Multi-generational planting of Eucalyptus species degrades soil quality but the introduction of legumes can improve soil fertility and microbial diversity. However, the effects of introducing non-legume native tree species on soil nutrients and bacterial community structure remain poorly understood. This study investigated the impacts of the conversion of third generation monoculture Eucalyptus plantations to mixed systems including Eucalyptus urograndis with Cinnamomum camphora (EC) and E. urograndis with Castanopsis hystrix (EH), on soil chemical and biochemical properties and bacterial community structure, diversity and functions. First generation E. urophylla plantations were the control. Results show that planting the third generation Eucalyptus led to a significant decrease in pH, organic matter, nutrient content, enzyme activities (invertin, acid phosphataes, and urease), and bacterial α-diversity compare to the controls. However, the mixed planting showed significant improvement in soil chemical and biochemical attributes and bacterial α-diversity, although the E. urograndis and C. hystrix planting had no improvement. Chloroflexi (oligotrophic bacteria) were significantly enriched in third generation Eucalyptus and Eucalyptus + C. hystrix, while proteobacteria increased significantly in the E. urograndis with C. camphora plantings. The relative abundance of multiple metabolic pathways increased significantly in the third generation Eucalyptus plantations whereas membrane transport-related genes were enriched in soils of the mixed systems. The changes in bacterial community structures in the two mixed systems were driven by diversity, organic matter and acid phosphatase, while bacterial functions were affected by invertase, $${\mathrm{NO}}_{3}^{-}$$ NO 3 - -N, diversity and urease. These results suggest that the transformation of successive monoculture Eucalyptus plantations into mixed plantations reduces the depletion of soil nutrients and enhances the ecological function of soil microorganisms.

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Section: Variations In Soil Chemical Properties and Enzyme Activitysupporting

confidence: 92%

Section: Variations In Soil Chemical Properties and Enzyme Activitysupporting

confidence: 92%

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Effects of enrichmemt planting with native tree species on bacterial community structure and potential impact on Eucalyptus plantations in southern China

Zhu

et al. 2022

J. For. Res.

Self Cite

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“…and below the ground (root exudations, mycorrhizal associations; Baldrian, 2017; Pereira et al, 2019;Xu et al, 2021), and increase the number of ecological niches to support a more diverse bacterial community (Beckers et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Impacts of near‐natural management in eucalyptus plantations on soil bacterial community assembly and function related to nitrogen cycling

Liu

Zhang

et al. 2022

Functional Ecology

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1. Eucalyptus trees have been widely planted in China as commercial timber, which has caused severe soil erosion and water deficiency. Near-natural management by mixing eucalyptus with nitrogen-fixing tree species has been used in plantations to alleviate these problems. In the present study, we investigated the changes in soil microbial community and function in eucalyptus plantations mixed with nitrogen-fixing trees and with different rotation histories (first and second generation) using Illumina MiSeq. of 16S rRNA gene, coupled with Functional Annotation of Prokaryotic Taxa (FAPROTAX) and Quantitative Microbial Element Cycling (QMEC) analyses. 2. Both management systems (mixed with nitrogen-fixing trees and with different rotating time) increased the soil bacterial α-diversity. 3. The plantations with different management histories formed different bacterial communities and potential functional structures. Mixing with nitrogen-fixing trees increased the abundance of Actinobacteria involved in the nitrogen cycle and the abundance of K-strategy bacteria (Acidobacteria, Verrucomicrobia, Chloroflexi) in both first-and second-generation plantations.4. Functionally, the expression of nitrogen-fixing (nifH) and nitrification genes (amoA1 and hao) increased and that of denitrification genes (nirk2, nirk3, nirS1 and nosZ2) decreased in plantations mixed with nitrogen-fixing trees. The soil pH, soil water content and bacterial biomass were the key factors driving bacteria community and functional structures. The strategy of mixing eucalyptus with nitrogen-fixing trees can increase the efficiency of nitrogen cycling by accelerating the nitrogen-fixing and nitrifying process while inhibiting the denitrifying process.5. The results highlight the importance of mixing eucalyptus with nitrogen-fixing trees for soil microbes and provide useful information on the management of eucalyptus plantations in the future.

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“…As one of the most active parts of the soil, microorganisms are important in plant development and stress resistance (Liu et al, 2020a ). Moreover, soil microorganisms are recognized as the important implementers of biogeochemical cycling and are major contributors to maintaining soil quality, sustainable agroforestry, and ecosystem functions (Wang J. L. et al, 2021 ; Xu Y. et al, 2021 ). Therefore, understanding the compositions and functions of soil microbial communities is important in the sustainable management of farmlands, forests, and human health.…”

Section: Introductionmentioning

confidence: 99%

A Stronger Rhizosphere Impact on the Fungal Communities Compared to the Bacterial Communities in Pecan Plantations

et al. 2022

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Understanding microbial communities associated with bulk and rhizosphere soils will benefit the maintenance of forest health and productivity and the sustainable development of forest ecosystems. Based on MiSeq sequencing, we explored the differences between the bulk soil and the rhizosphere soil on bacterial and fungal communities of pecan plantation. Results suggested that rhizosphere-associated fungal rather than bacterial community structures differed from bulk soil, and rhizosphere soil had lower fungal diversity than bulk soil. Actinobacteria and Cantharellales were the bacterial and fungal biomarkers of the rhizosphere soil of pecan plantation, respectively. In addition, Pleosporales, which are mainly involved in saprophylaxis and plant pathogenic processes, was identified as one of the most important fungal biomarkers for the bulk soil, and the FunGuild predicted a higher relative abundance of pathogenic fungi in bulk soil compared to rhizosphere soil. The pH, ammonium nitrogen (NH4+-N), nitrate nitrogen (NO3--N), and total carbon (TC) contents drove microbial community structure and composition. The bacterial network was simpler in the rhizosphere soil than in the bulk soil. However, fungi showed the opposite network pattern. Keystone species in bacterial and fungal networks were mostly involved in nutrient cycling and the C cycling, and were found to be enriched in the rhizosphere soil. Overall, in terms of bacterial and fungal communities, the rhizosphere soil behaves more healthily than the bulk soil and has a higher potential for nutrient cycling.

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Soil nutrient supply and tree species drive changes in soil microbial communities during the transformation of a multi-generation Eucalyptus plantation

Cited by 43 publications

References 70 publications

Effects of enrichmemt planting with native tree species on bacterial community structure and potential impact on Eucalyptus plantations in southern China

Effects of enrichmemt planting with native tree species on bacterial community structure and potential impact on Eucalyptus plantations in southern China

Impacts of near‐natural management in eucalyptus plantations on soil bacterial community assembly and function related to nitrogen cycling

A Stronger Rhizosphere Impact on the Fungal Communities Compared to the Bacterial Communities in Pecan Plantations

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