Changes of soil labile organic carbon fractions and their relation to soil microbial characteristics in four typical wetlands of Sanjiang Plain, Northeast China

Xiao, Yegui; Huang, Zhigang; Xia, Lu

doi:10.1016/j.ecoleng.2015.05.015

Cited by 89 publications

(53 citation statements)

References 55 publications

(53 reference statements)

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“…Consequently, differences in the types of nutritional substrates available aboveground might also influence the effect of soil microbial diversity on soil C fractions (Chen et al, 2014). Previous studies have also shown strong relations between soil C fractions and microbial community diversity (Xiao et al, 2015;Ren et al, 2016a;Chen et al, 2017). Therefore, afforested land that supports more biomass in the form of differentiated heterogeneous aboveground biomass, belowground root biomass, root exudates and rhizosphere resources controls the variation in soil microbial diversity after afforestation, which would also affect soil C fractions in afforested ecosystems.…”

Section: Response Of C Fractions To Soil Microbial Diversity After Afmentioning

confidence: 99%

Changes in soil microbial community are linked to soil carbon fractions after afforestation

Zhao

Ren

Zhang³

et al. 2018

European J Soil Science

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The soil microbial community plays an important role in regulating soil organic carbon (SOC) decomposition and maintaining stability in forest ecosystems. However, the interactions between the soil microbial community and soil carbon (C) fractions following afforestation remain poorly understood. In this study, soil samples were collected in an afforested area representing a chronosequence of 42, 27 and 17 years of Robinia pseudoacacia L. succession (RP42yr, RP27yr and RP17yr, respectively), and in farmland (FL) soil for comparison. Illumina sequencing of the16S rRNA and fungal ITS genes was used to analyse soil bacterial and fungal diversity, and the content of C fractions was also measured. Our results indicated that soil C fractions in the afforested RP42yr, RP27yr and RP17yr sites were 34.83–94.11%, 38.52–82.83% and 27.24–89.32% larger, respectively, than in the FL soil. Shannon indices for bacterial and fungal diversity, which ranged from 6.59 to 6.81 and 3.73 to 4.19, respectively, were also larger in the afforested soil. In addition, the dominant bacterial and fungal phyla, including Proteobacteria, Acidobacteria, Chloroflexi, Gemmatimonadetes, Bacteroidetes, Nitrospirae, Verrucomicrobia, Planctomycetes, Armatimonadetes, Cyanobacteria, Chlorobi, Firmicutes, Fibrobacteres, Zygomycota, Basidiomycota and Glomeromycota, were more abundant in afforested soil than in FL soil, whereas Actinobacteria and Ascomycota were more abundant in FL soil than in afforested soil. Spearman's rank correlation coefficients were strong and positive between soil microbial diversity (alpha diversity, Bshannon and Fshannon) and C fractions (P < 0.05). The dominant phyla (both bacterial and fungal), such as Proteobacteria and Zygomycota, had significant positive effects on C fractions, whereas for other taxa, such as Actinobacteria and Ascomycota, they were significant and negative. Thus, our results indicated that changes in soil C fractions are linked to the composition of soil microbial communities following afforestation. They also provide further evidence that soil bacterial and fungal communities play vital roles in the turnover of SOC and C cycling. Highlights Changes in soil microbial community influence soil carbon fractions following afforestation. Carbon fractions and soil microbial communities respond to afforestation. Changes in C fractions were strongly correlated with soil microbial diversity. Soil microbial diversity and microbial taxa markedly affected carbon fractions.

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Section: Response Of C Fractions To Soil Microbial Diversity After Afmentioning

confidence: 99%

Changes in soil microbial community are linked to soil carbon fractions after afforestation

Zhao

Ren

Zhang³

et al. 2018

European J Soil Science

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“…Soil extracellular enzyme activities (EEAs) are vital indicators of soil microbial activity, and they are closely associated with SOC decomposition and nutrient cycling [48]. Based on their functions, soil enzymes can be divided into hydrolases and oxidases that decompose substrates of various composition and complexity, which are strongly affected by fertilization [49].…”

Section: Effects Of Manure Substitution Of Chemical Fertilizer On Soimentioning

confidence: 99%

Substitution of manure for chemical fertilizer affects soil microbial community diversity, structure and function in greenhouse vegetable production systems

Luan

Gao²,

Huang

et al. 2020

PLoS ONE

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“…that control fine root dynamics are still poorly understood (Yuan and Chen, 2012). Moreover, roots play an important role on soil microbial community and enzyme activity (Xiao et al, 2015) and soil improvement. Therefore, in the future, it is needed to explore the salt tolerance of the adult trees of R. pseudoacacia based on roots and soil microbial community in the coastal saline soil of the Yellow River Delta, which provides a theoretical basis for the vegetation restoration in this area.…”

Section: Discussionmentioning

confidence: 99%

Effects of salt stress on eco-physiological characteristics in Robinia pseudoacacia based on salt-soil rhizosphere

Mao

Zhang

Cao

et al. 2016

Science of The Total Environment

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Robinia pseudoacacia is the main arbor species in the coastal saline-alkali area of the Yellow River Delta. Because most studies focus on the aboveground parts, detailed information regarding root functioning under salinity is scare. Root traits of seedlings of R. pseudoacacia including morphological, physiological and growth properties under four salinity levels (CK, 1‰, 3‰ and 5‰ NaCl) were studied by the pot experiments to better understand their functions and relationships with the shoots. The results showed that seedling biomass decreased by the reduction of root, stem and leaf biomass with the increase of salinity levels. With increasing salinity levels, total root length (TRL) and total root surface area (TRSA) decreased, whereas specific root length (SRL) and specific root area (SRA) increased. Salt stress decreased root activity (RA) and the maximum net photosynthetic rate (Amax) and increased the water saturation deficit (WSD) significantly in the body. Correlation analyses showed significantly correlations between root morphological and physiological parameters and seedling biomass and shoot physiological indexes. R. pseudoacacia seedlings could adapt to 1‰ salinity by regulating the root morphology and physiology, but failed in 5‰ salinity. How to adjust the water status in the body with decreasing water uptake by roots was an important way for R. pseudoacacia seedlings to adapt to the salt stress.

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Changes of soil labile organic carbon fractions and their relation to soil microbial characteristics in four typical wetlands of Sanjiang Plain, Northeast China

Cited by 89 publications

References 55 publications

Changes in soil microbial community are linked to soil carbon fractions after afforestation

Changes in soil microbial community are linked to soil carbon fractions after afforestation

Substitution of manure for chemical fertilizer affects soil microbial community diversity, structure and function in greenhouse vegetable production systems

Effects of salt stress on eco-physiological characteristics in Robinia pseudoacacia based on salt-soil rhizosphere

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