Responses of plant diversity and soil microorganism diversity to water and nitrogen additions in the Qinghai-Tibetan Plateau

Li, Jingjing; Yang, Chao; Zhou, Huakun; Shao, Xinqing

doi:10.1016/j.gecco.2020.e01003

Cited by 33 publications

(32 citation statements)

References 55 publications

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“…Betaproteobacteria are the most important taxa, which are different from the results of this study. It may be due to the special geographical environment of Heihe River, low temperature and high altitude, and experiencing significant nitrogen (N) deposition and increased precipitation in Qinghai‐Tibetan Plateau (Li et al ., 2020), which leading to a large accumulation of cold‐adapted Gammaproteobacteria. Liu et al .…”

Section: Discussionmentioning

confidence: 99%

Community structure of bacterioplankton and its relationship with environmental factors in the upper reaches of the Heihe River in Qinghai Plateau

Zhang

Sheng-long

et al. 2021

Environmental Microbiology

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Summary Planktonic microorganisms play a key role in the biogeochemical processes of the aquatic system, and they may be affected by many factors. High‐throughput sequencing technology was used in this study to investigate and study the bacterioplankton community of water bodies in the upper reaches of the Heihe River Basin in Qinghai Plateau. Results showed that Proteobacteria, Firmicutes, Bacteroidetes and Actinobacteria are the predominant phyla in this river section, while the main genera are Thiomonas, Acidibacillus, Acidocella, Rhodanobacter, Acidithiobacter and Gallionella, which are autochthonous in the acid‐mine drainage. Additionally, total nitrogen, total phosphorus, permanganate index and pH are significantly correlated with the bacterioplankton abundance and are the main limiting factors for the spatial distribution of the bacterioplankton. PICRUSt inferred that the mainstream microbial assemblages had a higher abundance of KOs belong to metabolism of terpenoids and polyketides, while the tributary had higher abundance of KOs belong to the immune system. The relationship between bacterioplankton community composition and environmental factors in the Heihe River basin was discussed for the first time in this study, which provides a theoretical basis for the healthy, orderly development of the water environment in the Heihe River Basin.

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Section: Discussionmentioning

confidence: 99%

Community structure of bacterioplankton and its relationship with environmental factors in the upper reaches of the Heihe River in Qinghai Plateau

Zhang

Sheng-long

et al. 2021

Environmental Microbiology

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“…Moreover, the quantity and quality of organic matters released into the soil subsystem may be altered due to the mixing of plant litters and/or root exudates as a result of modified plant diversity and community composition. This altered organic matter and corresponding patterns of resource availability and utilization can significantly impact the soil microbial community structure (Chapman, Newman, Hart, Schweitzer, & Koch, 2013; Eisenhauer et al, 2010; Li et al, 2020; Wang, Zhou, Liu, Jiang, et al, 2018). High plant diversity could result in greater biochemical diversity of organic matters that can be colonized by highly diverse microbial communities (Chapman et al, 2013; Eisenhauer et al, 2010; Li et al, 2020; Zuo et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

“…The main reason for the altered soil microbial community structure might be attributed to the significant differences in plant diversity under these four treatments, which can release various types of litters and/or root exudates. Previous studies have reported that the secondary metabolites in plant litters and/or root exudates can influence soil microbial communities (Eisenhauer et al, 2010; Li, Yang, Zhou, & Shao, 2020; Wang, Zhou, Liu, Jiang, et al, 2018; Zuo et al, 2016). Moreover, the quantity and quality of organic matters released into the soil subsystem may be altered due to the mixing of plant litters and/or root exudates as a result of modified plant diversity and community composition.…”

Section: Discussionmentioning

confidence: 99%

“…This altered organic matter and corresponding patterns of resource availability and utilization can significantly impact the soil microbial community structure (Chapman, Newman, Hart, Schweitzer, & Koch, 2013; Eisenhauer et al, 2010; Li et al, 2020; Wang, Zhou, Liu, Jiang, et al, 2018). High plant diversity could result in greater biochemical diversity of organic matters that can be colonized by highly diverse microbial communities (Chapman et al, 2013; Eisenhauer et al, 2010; Li et al, 2020; Zuo et al, 2016). Previous studies showed that soil microbial diversity was positively associated with plant diversity (Li et al, 2020; McGuire, Fierer, Bateman, Treseder, & Turner, 2012; Wang, Zhou, Liu, Jiang, et al, 2018; Zuo et al, 2016).…”

Section: Discussionmentioning

confidence: 99%

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Ecological restoration treatments enhanced plant and soil microbial diversity in the degraded alpine steppe in Northern Tibet

Wang

et al. 2020

Land Degrad Dev

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Plant community structure and microbial ecological functions of alpine steppe in Northern Tibet are susceptible to variations in the natural environment and anthropogenic activities. In recent times, the alpine steppe in Northern Tibet has been severely degraded, that is, plant biodiversity was reduced and plant coverage declined. It is crucial to restoring the degraded alpine steppe in Northern Tibet to maintain the sustainable development of the environment and social economy. This study aimed to evaluate the ecological engineering benefits of four types of ecological restoration treatments: (a) independent treatment of sowing plant seeds; (b) combined treatments with (a) and fertilized microbial inoculum; (c) combined treatments with (a) and spraying hydrophilic polyurethane (which can enhance the ability of moisture retention, fertility, and temperature in the soil subsystem); and (d) the comprehensive treatments with (a) and fertilized microbial inoculum and spraying hydrophilic polyurethane. Noting their effect on plant growth performance, plant taxonomic and functional diversity, soil physicochemical properties, and soil microbial diversity in the degraded alpine steppe. Plots where no seeds were planted and no other amendments were applied were selected as experimental controls. Plant height, leaf size, plant taxonomic and functional diversity, total carbon and nitrogen contents, soil bacterial and fungal diversity were significantly enhanced under the four ecological restoration treatments. Plant growth performance (in particular, competitiveness for sunlight acquisition and leaf photosynthetic area), and soil fertility were significantly enhanced under the four treatments. The improved plant taxonomic and functional diversity and soil microbial diversity could facilitate the biological communities in degraded alpine steppe to develop better ecological functions, especially community stability. Meanwhile, the combination of all three treatments was found to be the best among all treatments applied in this study. This can help restore the degraded alpine steppe in Northern Tibet.

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“…The results of a study by Leff et al, [28] indicated that the input of nitrogen and phosphorus to grasslands leads to predictable shifts in the taxonomic and functional traits of soil microbial communities; therefore, these communities are sensitive to nutrient inputs [28]. Nitrogen addition can alter the composition of the bacterial or fungal communities in the soil [29][30][31]. Therefore, understanding the variation in the composition and function of soil microbial communities in wetlands, in response to soil disturbance and human activities such as intensified nitrogen input on agricultural land or grazing wetlands, is favored for ecological restoration.…”

Section: Introductionmentioning

confidence: 99%

Disentangling Responses of the Subsurface Microbiome to Wetland Status and Implications for Indicating Ecosystem Functions

et al. 2021

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In this study, we analyzed microbial community composition and the functional capacities of degraded sites and restored/natural sites in two typical wetlands of Northeast China—the Phragmites marsh and the Carex marsh, respectively. The degradation of these wetlands, caused by grazing or land drainage for irrigation, alters microbial community components and functional structures, in addition to changing the aboveground vegetation and soil geochemical properties. Bacterial and fungal diversity at the degraded sites were significantly lower than those at restored/natural sites, indicating that soil microbial groups were sensitive to disturbances in wetland ecosystems. Further, a combined analysis using high-throughput sequencing and GeoChip arrays showed that the abundance of carbon fixation and degradation, and ~95% genes involved in nitrogen cycling were increased in abundance at grazed Phragmites sites, likely due to the stimulating impact of urine and dung deposition. In contrast, the abundance of genes involved in methane cycling was significantly increased in restored wetlands. Particularly, we found that microbial composition and activity gradually shifts according to the hierarchical marsh sites. Altogether, this study demonstrated that microbial communities as a whole could respond to wetland changes and revealed the functional potential of microbes in regulating biogeochemical cycles.

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Responses of plant diversity and soil microorganism diversity to water and nitrogen additions in the Qinghai-Tibetan Plateau

Cited by 33 publications

References 55 publications

Community structure of bacterioplankton and its relationship with environmental factors in the upper reaches of the Heihe River in Qinghai Plateau

Community structure of bacterioplankton and its relationship with environmental factors in the upper reaches of the Heihe River in Qinghai Plateau

Ecological restoration treatments enhanced plant and soil microbial diversity in the degraded alpine steppe in Northern Tibet

Disentangling Responses of the Subsurface Microbiome to Wetland Status and Implications for Indicating Ecosystem Functions

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