Linkages between soil respiration and microbial communities following afforestation of alpine grasslands in the northeastern Tibetan Plateau

Chen, Longfei; He, Zhibin; Wu, Xiurong; Du, Jun; Zhu, Xi; Lin, Pengfei; Tian, Qian; Kong, Junqia

doi:10.1016/j.apsoil.2021.103882

Cited by 44 publications

(28 citation statements)

References 72 publications

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“…Potassium dichromate volumetric and external heating techniques were used to quantify SOC ( Chen et al, 2021 ), while soil TN was measured by the semi–micro kelvin method ( Wang G. et al, 2021 ). The activities of soil enzymes, soil urease (S-UE), soil sucrase (S-SC), and soil cellulase (S-CL) were evaluated using Solarbio analytical kits BC0125, BC0245, and BC0155S, respectively (Science & Technology Co., Ltd., Beijing, China), as per the procedure of the manufacturer.…”

Section: Methodsmentioning

confidence: 99%

“…In contrast, fungi decompose more abrasive materials principally in the final stages of decomposition ( Marschner et al, 2011 ). The energy and C derived from the crop residues incorporated into the soil are distributed throughout the trophic levels, affecting different soil microorganisms such as soil bacteria, fungi, and nematodes ( Chen et al, 2021 ).…”

Section: Introductionmentioning

confidence: 99%

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Straw Return and Nitrogen Fertilization to Maize Regulate Soil Properties, Microbial Community, and Enzyme Activities Under a Dual Cropping System

Ihsan

Xin

et al. 2022

Front. Microbiol.

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Soil sustainability is based on soil microbial communities’ abundance and composition. Straw returning (SR) and nitrogen (N) fertilization influence soil fertility, enzyme activities, and the soil microbial community and structure. However, it remains unclear due to heterogeneous composition and varying decomposition rates of added straw. Therefore, the current study aimed to determine the effect of SR and N fertilizer application on soil organic carbon (SOC), total nitrogen (TN), urease (S-UE) activity, sucrase (S-SC) activity, cellulose (S-CL) activity, and bacterial, fungal, and nematode community composition from March to December 2020 at Guangxi University, China. Treatments included two planting patterns, that is, SR and traditional planting (TP) and six N fertilizer with 0, 100, 150, 200, 250, and 300 kg N ha–1. Straw returning significantly increased soil fertility, enzymatic activities, community diversity, and composition of bacterial and fungal communities compared to TP. Nitrogen fertilizer application increased soil fertility and enzymes and decreased the richness of bacterial and fungal communities. In SR added plots, the dominated bacterial phyla were Proteobacteria, Acidobacterioia, Nitrospirae, Chloroflexi, and Actinobacteriota; whereas fungal phyla were Ascomycota and Mortierellomycota and nematode genera were Pratylenchus and Acrobeloides. Co-occurrence network and redundancy analysis (RDA) showed that TN, SOC, and S-SC were closely correlated with bacterial community composition. It was concluded that the continuous SR and N fertilizer improved soil fertility and improved soil bacterial, fungal, and nematode community composition.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Straw Return and Nitrogen Fertilization to Maize Regulate Soil Properties, Microbial Community, and Enzyme Activities Under a Dual Cropping System

Ihsan

Xin

et al. 2022

Front. Microbiol.

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“…Bacteria is one of the important contributors to Rs, which is a general consensus (Chen et al, 2021;Wu et al, 2020). Due to the heterotrophic potential of microalgae as described in this article, the interaction between microalgae and bacteria, such as competition and/or symbiosis, inevitably existed, which could influence the decomposition of soil organic matter via bacteria.…”

Section: The Linkage Between Soil Eukaryotic Microalgae and Rs Ratementioning

confidence: 91%

“…As a broadly distributed and dominant group of microorganisms, soil bacteria are considered to be the main contributor to Rs . Therefore, numerous studies have analyzed the characteristics of the soil bacteria, and provisionally established the linkage between bacterial community and Rs rate (Chen et al, 2021; Wu et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Linkages between soil respiration and soil eukaryotic microalgae following vegetation restoration in the Loess Plateau, China

Zhang

2022

Land Degrad Dev

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Eukaryotic microalgae are widespread in soil. They are generally considered to participate in soil development and the formation of the soil food chain. Interestingly, some microalgae can grow in heterotrophic mode. Therefore, it is a reasonable speculation that eukaryotic microalgae may participate in the process of soil respiration (Rs) via the heterotrophic metabolism of soil organic matter. Nevertheless, the mechanism is not well understood. Here, we investigated the eukaryotic microalgal community in farmland and plantation/grassland soil via high-throughput sequencing focusing on the Loess Plateau, China. Chlorophyta, Chrysophyta, Cryptophyta, Bacillariophyta, Dinophyta, Xanthophyta, and Haptophyta were found in all samples. Nevertheless, the biomarker for farmland soil was affiliated to Chlorophyta and Xanthophyta, whereas the biomarker for plantation/grassland soil was affiliated to Chrysophyta. Moreover, the distribution of soil microalgae was strongly dependent on soil pH, organic matter, and nitrogen. In addition, afforestation significantly decreased Rs rate, which was significantly related to the soil microalgal community, especially 11 taxa of eukaryotic microalgae affiliating to Chlorophyta and Chrysophyta. Meanwhile, the interaction between microalgae and bacteria in farmland soil was stronger than that in plantation/grassland soil, which was also likely to affect Rs rate. These results suggest that beyond plants, soil eukaryotic microalgae are functionally significant but rarely considered participants of Rs. Therefore, they should be considered when investigating soil carbon cycling.

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“…Potassium dichromate volumetric and external heating techniques were used to quantify SOC (Chen et al, 2021), while soil TN was measured by the semi-micro kelvin method (Wang et al, 2021a). Using an electronic pH meter, the soil pH was determined potentiometrically (1:5 suspensions) using the method of Rhoads (1996).…”

Section: Soil Organic C N and Ph Analysismentioning

confidence: 99%

Irrigation and Nitrogen Fertilization Alter Soil Bacterial Communities, Soil Enzyme Activities, and Nutrient Availability in Maize Crop

et al. 2022

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Irrigation and nitrogen (N) fertilization rates are widely used to increase crop growth and yield and promote the sustainable production of the maize crop. However, our understanding of irrigation and N fertilization in the soil microenvironment is still evolving, and further research on soil bacterial communities under maize crop with irrigation and N management in subtropical regions of China is needed. Therefore, we evaluated the responses of two irrigation levels (low and high irrigation water with 60 and 80% field capacity, respectively) and five N fertilization rates [i.e., control (N0), N200 (200 kg N ha−1), N250 (250 kg N ha−1), N300 (300 kg N ha−1), and N350 (350 kg N ha−1)] on soil bacterial communities, richness, and diversity. We found that both irrigation and N fertilization significantly affected bacterial richness, diversity index, and number of sequences. Low irrigation with N300 treatment has significantly higher soil enzymes activities, soil nutrient content, and bacterial alpha and beta diversity than high irrigation. In addition, the Proteobacteria, Actinobacteriota, Chloroflexi, and Firmicutes were the dominant bacterial phyla under both irrigation regimes. The acidic phosphates, acidic invertase, β-glucosidase, catalase, cellulase, and urease were positively correlated with the Shannon index under both low and high irrigation. Therefore, low irrigation improves soil nutrient utilization by boosting soil enzyme activity, directly affecting soil bacterial communities. It was concluded that greater soil nutrients, enzyme activities with higher bacterial diversity are the main indicators of soil reactivity to low irrigation water and N300 for maintaining soil fertility and soil microbial community balance.

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Linkages between soil respiration and microbial communities following afforestation of alpine grasslands in the northeastern Tibetan Plateau

Cited by 44 publications

References 72 publications

Straw Return and Nitrogen Fertilization to Maize Regulate Soil Properties, Microbial Community, and Enzyme Activities Under a Dual Cropping System

Straw Return and Nitrogen Fertilization to Maize Regulate Soil Properties, Microbial Community, and Enzyme Activities Under a Dual Cropping System

Linkages between soil respiration and soil eukaryotic microalgae following vegetation restoration in the Loess Plateau, China

Irrigation and Nitrogen Fertilization Alter Soil Bacterial Communities, Soil Enzyme Activities, and Nutrient Availability in Maize Crop

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