Spatio-temporal variation of rhizosphere soil microbial abundance and enzyme activities under different vegetation types in the coastal zone, Shandong, China

Zhang, L.; Song, Liangcheng; Shao, Hongbo; Shao, Chunlin; Li, M.; Liu, M.; Brestič, Marián; Xu, Guangping

doi:10.1080/11263504.2013.770804

Cited by 22 publications

(6 citation statements)

References 28 publications

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“…In our study, the second-layer soil was 10 to 20 cm deep for herbaceous plant and was 20 to 40 cm deep for woody plant, within which the botanic roots grew vigorously. It has been confirmed that rhizosphere could assemble a great quantity of microbial communities living with the root exudates, and was abundant with nutrient, enzyme, water and oxygen 41 42 . The second-layer soil was approximately within the scope of the rhizosphere, therefore, it was an ideal site that nitrification, denitrification and respiration could proceed at high rates.…”

Section: Discussionmentioning

confidence: 95%

Microbial nitrification, denitrification and respiration in the leached cinnamon soil of the upper basin of Miyun Reservoir

Cai

Zhang

et al. 2017

Sci Rep

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Leached cinnamon soil is the main agricultural soil distributed in the North China Plain. In this research, leached cinnamon soil samples were collected in the upper basin of Miyun Reservoir (northeast of Beijing, China). The BaPS method (Barometric Process Separation) was applied to measure nitrification, denitrification and respiration rates. The rates of nitrification, denitrification and respiration were 0–120.35 μg N/kg SDW h, 0–246.86 μg N/kg SDW h and 0.17–225.85 μg C/kg SDW h (Soil Dry Weight, SDW), respectively. The emission rates of CO2 and NxOy through nitrification, denitrification and respiration were 1.00–547.80 and 6.00–4850.65 μmol/h, respectively. The analysis of relationships between nitrification, denitrification and respiration rates indicated that these three microbial processes were interacted, which posed impacts on soil nitrogen availability. As indicated by the results, C:N ratio coupled with content could be taken as the indicators of content, which is usually the predominant form of N available to plants growing in soil. Results showed that content was the highest (i.e., >62.4 mg/kg) when C:N ratio was 5.30–8.40, meanwhile content was 3.71–4.39 mg/kg. Nevertheless, content was the lowest (i.e., <6.40 mg/kg) when C:N ratio was 9.2–12.10, meanwhile content was 3.41–4.35 mg/kg.

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Section: Discussionmentioning

confidence: 95%

Microbial nitrification, denitrification and respiration in the leached cinnamon soil of the upper basin of Miyun Reservoir

Cai

Zhang

et al. 2017

Sci Rep

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“…Soil physical properties are critical to soil quality in aspects of root growth, infiltration, water and nutrient holding capacity 32 . Land uses and vegetation types can significantly influence soil physical properties, particularly soil aggregates distribution 33 , 34 . In this study, the variation of SWC, BD and porosity occurred among three land uses, the higher SWC observed in arable land was likely related to the fact that farmland undergone the artificial irrigation.…”

Section: Discussionmentioning

confidence: 99%

Variation of soil organic carbon and physical properties in relation to land uses in the Yellow River Delta, China

Jiao

et al. 2020

Sci Rep

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Soil physical properties and soil organic carbon (SOC) are considered as important factors of soil quality. Arable land, grassland, and forest land coexist in the saline-alkali reclamation area of the Yellow River Delta (YRD), China. Such different land uses strongly influence the services of ecosystem to induce soil degradation and carbon loss. The objective of this study is to evaluate the variation of soil texture, aggregates stability, and soil carbon affected by land uses. For each land use unit, we collected soil samples from five replicated plots from “S” shape soil profiles to the depth of 50 cm (0–5, 5–10, 10–20, 20–30, and 30–50 cm). The results showed that the grassland had the lowest overall sand content of 39.98–59.34% in the top 50 cm soil profile. The content of soil aggregates > 0.25 mm (R0.25), mean weight diameter and geometric mean diameter were significantly higher in grassland than those of the arable and forest land. R0.25, aggregate stability in arable land in the top 30 cm were higher than that of forest land, but lower in the soil profile below 20 cm, likely due to different root distribution and agricultural practices. The carbon management index (CMI) was considered as the most effective indicator of soil quality. The overall SOC content and CMI in arable land were almost the lowest among three land use types. In combination with SOC, CMI and soil physical properties, we argued that alfalfa grassland had the advantage to promote soil quality compared with arable land and forest land. This result shed light on the variations of soil properties influenced by land uses and the importance to conduct proper land use for the long-term sustainability of the saline-alkali reclamation region.

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“…Differentiation of root exudates chemical composition is related to genus, species, cultivar, age, and a lot of abiotic and biotic factors [78]. A linear correlation has been established between rhizosphere enzyme activities and microbial abundance [79]. The progressive increase in microbial populations reported in this study may be due to the increase in root exudation into the rhizosphere as plant ages, which further stimulated microbial population increase.…”

Section: Discussionmentioning

confidence: 63%

Enhanced rhizoremediation of crude oil–contaminated mangrove swamp soil using two wetland plants (Phragmites australis and Eichhornia crassipes)

2019

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Comparative studies of enhanced rhizoremediation with biostimulation and bioaugmentation techniques in remediation of oilcontaminated mangrove environment were investigated. Contaminated soils at 7190 mg/kg of oil were subjected to the following treatments: soil (S), soil + oil (SO), soil + oil + fertilizer (NPK) (SOF), soil + oil + fertilizer + microorganisms (SOFM), soil + oil + fertilizer + microorganisms + solarization (SOFMS) (triplicates): two sets planted with P. australis, E. crassipes, and one unplanted. These were studied comparatively for 120 days for culturable (aerobic, mesophilic) heterotrophic and hydrocarbonutilizing microbial populations, and soil residual TPH. Results showed culturable heterotrophic and hydrocarbon-utilizing microbial populations and TPH loss in planted soils were consistently higher than those in unplanted receiving corresponding treatments (P ˂ 0.05).

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Spatio-temporal variation of rhizosphere soil microbial abundance and enzyme activities under different vegetation types in the coastal zone, Shandong, China

Cited by 22 publications

References 28 publications

Microbial nitrification, denitrification and respiration in the leached cinnamon soil of the upper basin of Miyun Reservoir

Microbial nitrification, denitrification and respiration in the leached cinnamon soil of the upper basin of Miyun Reservoir

Variation of soil organic carbon and physical properties in relation to land uses in the Yellow River Delta, China

Enhanced rhizoremediation of crude oil–contaminated mangrove swamp soil using two wetland plants (Phragmites australis and Eichhornia crassipes)

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