Soil microbial biomass, community composition and soil nitrogen cycling in relation to tree species in subtropical China

Huang, Zhiyin; Wan, Xiaohua; Zhu, He; Yu, Zaipeng; Wang, Minhuang; Hu, Zhenhong; Yang, Yusheng

doi:10.1016/j.soilbio.2013.03.008

Cited by 85 publications

(50 citation statements)

References 53 publications

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“…A negative relationship between DOC80 and NO 3 -N (r = −0.749, P < 0.05) observed in the present study was consistent with that reported by Huang et al (2013), probably because of increased microbial N immobilization by bacteria. Myrold and Posavatz (2007) found that bacteria, rather than The three groupings show point that are closer together than other combinations and suggest that carbon input (i.e., CRM) is more influential on the PLFA profiles than the N fertilizer rates.…”

Section: Discussion Effects Of Crop Residue On Soil Propertiessupporting

confidence: 93%

Crop residue management and fertilization effects on soil organic matter and associated biological properties

Zhao

Zhang

et al. 2016

Environ Sci Pollut Res

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Xiying, "Crop residue management and fertilization effects on soil organic matter and associated biological properties" (2016 Abstract Returning crop residue may result in nutrient reduction in soil in the first few years. A two-year field experiment was conducted to assess whether this negative effect is alleviated by improved crop residue management (CRM). Nine treatments (3 CRM and 3 N fertilizer rates) were used. The CRM treatments were (1) R0: 100 % of the N using mineral fertilizer with no crop residues return; (2) R: crop residue plus mineral fertilizer as for the R0; and (3) Rc: crop residue plus 83 % of the N using mineral and 17 % manure fertilizer. Each CRM received N fertilizer rates at 270, 360, and 450 kg N ha −1 year −1 . At the end of the experiment, soil NO 3 -N was reduced by 33 % from the R relative to the R0 treatment, while the Rc treatment resulted in a 21 to 44 % increase in occluded particulate organic C and N, and 80°C extracted dissolved organic N, 19 to 32 % increase in microbial biomass C and protease activity, and higher monounsaturated phospholipid fatty acid (PLFA):saturated PLFA ratio from stimulating growth of indigenous bacteria when compared with the R treatment. Principal component analysis showed that the Biolog and PLFA profiles in the three CRM treatments were different from each other. Overall, these properties were not influenced by the used N fertilizer rates. Our results indicated that application of 17 % of the total N using manure in a field with crop residues return was effective for improving potential plant N availability and labile soil organic matter, primarily due to a shift in the dominant microorganisms.

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Section: Discussion Effects Of Crop Residue On Soil Propertiessupporting

confidence: 93%

Crop residue management and fertilization effects on soil organic matter and associated biological properties

Zhao

Zhang

et al. 2016

Environ Sci Pollut Res

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“…Laboratory incubation studies have demonstrated that addition of litter with high quality (low C:N ratio) (Bastian et al 2009;Potthast et al 2010) or litter with high soluble C content (Fanin et al 2014) to soil led to an increase of microbial biomass and activated a copiotrophic microbial community (such as Gramnegative bacteria). However, our recent analysis of soil microbial community structure between broadleaf and coniferous species revealed that despite significant differences in litter C:N and lignin:N ratios, the soil microbial community structure did not differ significantly between the tree species (Huang et al 2013a). This suggests that other factors influence microbial community structure that may act either independently or synergistically with the tree species.…”

Section: Introductionmentioning

confidence: 88%

Soil C:N ratio is the major determinant of soil microbial community structure in subtropical coniferous and broadleaf forest plantations

et al. 2014

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Aims This study aimed to determine the influence of tree species on soil microbial community structure. Methods We conducted a litter and root manipulation and a short-term nitrogen (N) addition experiment in 19-yearold broadleaf Mytilaria laosensis (Hamamelidaceae) and coniferous Chinese fir (Cunninghamia lanceolata) plantations in subtropical China. Phospholipid fatty acid (PLFA) analysis was used to examine treatment effects on soil microbial community structure. Redundancy analysis (RDA) was performed to determine the relationships between individual PLFAs and soil properties (soil pH, carbon (C) and N concentration and C:N ratio). ResultsSoil C:N ratio was significantly greater in M. laosensis (17.9) than in C. lanceolata (16.2). Soil C:N ratio was the key factor affecting the soil microbial community regardless of tree species and the litter, root and N treatments at our study site. The fungal biomarkers, 18:1ω9 and 18:2ω6,9 were significantly and positively related to soil C:N ratio and the abundance of bacterial lipid biomarkers was negatively related to soil C:N ratio. N addition for 8 months did not change the biomass and structure of the microbial community in M. laosensis and C. lanceolata soils. Soil nutrient availability before N addition was an important factor in determining the effect of N fertilization on soil microbial biomass and activity. PLFA analysis showed that root exclusion significantly decreased the abundance of the fungal biomarkers and increased the abundance of the Gram-positive bacteria. Rootless plots had a relatively lower Gram-positive to Gram-negative bacteria ratio and a higher fungi to bacteria ratio compared to the plots with roots under both M. laosensis and C. lanceolata. The response of arbuscular mycorrhizal fungi (16:1ω5) to root exclusion was species-specific. Conclusions These observations suggest that soil C:N ratio was an important factor in influencing soil microbial community structure. Further studies are required to confirm the long-term effect of tree species on soil microbial community structure.

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“…Species specific effects on biogeochemical transformations relevant to C cycling and nutrient retention can be attributed to both above-and below-ground controls, and may work through multiple mechanisms (Huang et al, 2013). Many studies have documented the tree species effects on soil C and N cycling through litter inputs (Satti et al, 2003;Vesterdal et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Warming effects on root morphological and physiological traits: The potential consequences on soil C dynamics as altered root exudation

Yin

Xiao

et al. 2013

Agricultural and Forest Meteorology

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Soil microbial biomass, community composition and soil nitrogen cycling in relation to tree species in subtropical China

Cited by 85 publications

References 53 publications

Crop residue management and fertilization effects on soil organic matter and associated biological properties

Crop residue management and fertilization effects on soil organic matter and associated biological properties

Soil C:N ratio is the major determinant of soil microbial community structure in subtropical coniferous and broadleaf forest plantations

Warming effects on root morphological and physiological traits: The potential consequences on soil C dynamics as altered root exudation

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