Effects of fertilization and reclamation time on soil bacterial communities in coal mining subsidence areas

Xiang-ying, Wang; Yi, Li; Ying, Wei; Meng, Huisheng; Cao, Yanzhuan; Lead, Jamie R.; Hong, Jianping

doi:10.1016/j.scitotenv.2020.139882

Cited by 41 publications

(35 citation statements)

References 40 publications

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“…However, we found that soil pH was significantly lower after N addition ( p < .001) (especially in N3 level) than in CK treatment over the incubation period. This confirmed that the higher content of N addition may be an effective method for pH neutralization in alkaline soils in a certain range, as also observed in other recent studies (Pan et al., 2020; Wang et al., 2020). The addition of N fertilizers may lead to decreases in soil pH due to the oxidation and nitrification of ammonia (Geisseler & Scow, 2014).…”

Section: Discussionsupporting

confidence: 89%

Efficiency of biochar, nitrogen addition, and microbial agent amendments in remediation of soil properties and microbial community in Qilian Mountains mine soils

Kong

Chen

et al. 2021

Ecology and Evolution

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Section: Discussionsupporting

confidence: 89%

Efficiency of biochar, nitrogen addition, and microbial agent amendments in remediation of soil properties and microbial community in Qilian Mountains mine soils

Kong

Chen

et al. 2021

Ecology and Evolution

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“…Most of the relevant literature has involved monitoring and assessing the subsidence of land, degradation of land quality, and negative impacts on vegetation. Recent achievements in this field include the use of remote sensing and mathematical model-based methods to assess coal mining subsidence (Zhang et al 2015, Rošer et al 2018, the changes of soil physicochemical properties (Yang et al 2016, as well as the mitigation of subsidence influences (Luo 2008, Lv 2016 and the restoration of the disturbed land that resulted from mining (Clifford et al 2019, Feng et al 2019, Wang et al 2020. Some studies have focused on the broader changes of vegetation in the Loess Plateau coal mining area, where different scale observations derived from satellite imagery have determined that the vegetation coverage and biomass index is dynamic, and coal mining is one of the factors that drives the change in vegetation (Lei et al 2016, Liu et al 2019a.…”

Section: Introductionmentioning

confidence: 99%

Disturbance mechanism of coal mining subsidence to typical plants in a semiarid area using O-J-I-P chlorophyll a fluorescence analysis

Liu¹,

Lei²,

Chen³

et al. 2020

Photosynt.

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The response of individual plants to coal mining subsidence disturbance reflects the micro-ecological mechanism implied in the macro-response, which is the basis of studying the rule of vegetation disturbance of large-scale coal mining. In this study, O-J-I-P chlorophyll a fluorescence analysis was used to diagnose the disturbance mechanism of typical individual plants by coal mining subsidence in a semiarid area. The results showed that the groundwater level and soil water content decreased due to the disturbance of coal mining subsidence and the plant growth was affected by drought stress. The rapid chlorophyll fluorescence induction curve of leaves was deformed, the stomatal limitation increased, and the photosynthetic electron transfer was inhibited. Stomatal conductance, photosynthetic rate, and transpiration rate decreased significantly. The spatial heterogeneity of soil water content after mining subsidence is the main reason for the differing degree of plant drought stress in different subsidence areas.

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“…However, we found that soil pH was significantly lower after N addition (P < 0.001)(especially in N3 level) than in CK treatment over the incubation period. This confirmed that the higher content of N addition may be an effective method for pH neutralization in alkaline soils in a certain range, as also observed in other recent studies (Panet al ., 2020;Wang et al ., 2020). The addition of N fertilizers may lead to decreases in soil pH due to the oxidation and nitrification of ammonia (Geisseler and Scow, 2014).…”

Section: Changes In Soil Physicochemical Propertiesmentioning

confidence: 99%

“…The result of RDA also confirmed that the abundance of Acidobacteria was negatively related to TN (Fig.6a). Acidobacteria are generally classified as slow-growing oligotrophs (Fierer et al ., 2007;Wang et al ., 2020), and their abundances usually decrease with N fertilizer application (Francioli et al ., 2016).…”

Section: Changes In Soil Bacterial and Fungal Community Composition Amentioning

confidence: 99%

Efficiency of biochar, nitrogen addition and microbial agent amendments in remediation of soil properties and microbial community in mine soils

Kong

Chen

et al. 2021

Preprint

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Lacking of systematic evaluations in soil quality and microbial community recovery after different amendments addition limits optimization of amendments combination in coal mine-soils. We performed a short-term incubation experiment over 12 weeks to assess the effects of three amendments (biochar: C; nitrogen fertilizer at three levels: N-N1~N3; microbial agent at two levels: M-M1~M2) based on C/N ratio (regulated by biochar and N level: 35:1, 25:1, 12.5:1) on soil quality and microbial community in the Qilian Mountains, China. Over the incubation period, soil pH and MBC/MBN were significantly lower than unamended treatment in N addition and C+M+N treatments, respectively. Soil organic carbon (SOC), total nitrogen (TN), available nitrogen (AN), available phosphorus (AP), available potassium (AK), microbial biomass carbon (MBC) and microbial biomass nitrogen (MBN) contents had a significant increase in all amended treatments (P<0.001). Higher AP, AK, MBC, MBN and lower MBC/MBN were observed in N2-treated soil(corresponding to C/N ratio of 25:1). Meanwhile, N2-treated soil significantly increased species richness and diversity of soil bacterial community (P<0.05). Principal coordinate analysis further showed that soil bacterial community compositions were significantly separated by N level. C-M-N treatments (especially at N2 and N1 levels) significantly increased the relative abundance (>1%) of the bacterial phyla Bacteroidetes and Firmicutes, and decreased the relative abundance of fungal phyla Chytridiomycota (P<0.05). Redundancy analysis illustrated the importance of soil nutrients in explaining variability in bacteria community composition (74.73%) than fungal (35.0%). Our results indicated that N and M addition based on biochar can improve soil quality by neutralizing soil pH and increasing soil nutrient contents, and the appropriate C/N ratio (25:1: biochar+N2-treated soil) can better promote mass, richness and diversity of soil bacterial community. Our study provided a new insight for achieving restoration of damaged habitats by changing microbial structure, diversity and mass by regulating C/N ratio of amendments

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Effects of fertilization and reclamation time on soil bacterial communities in coal mining subsidence areas

Cited by 41 publications

References 40 publications

Efficiency of biochar, nitrogen addition, and microbial agent amendments in remediation of soil properties and microbial community in Qilian Mountains mine soils

Efficiency of biochar, nitrogen addition, and microbial agent amendments in remediation of soil properties and microbial community in Qilian Mountains mine soils

Disturbance mechanism of coal mining subsidence to typical plants in a semiarid area using O-J-I-P chlorophyll a fluorescence analysis

Efficiency of biochar, nitrogen addition and microbial agent amendments in remediation of soil properties and microbial community in mine soils

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