Soil Microbial Respiration in Subtaiga and Forest-Steppe Ecosystems of European Russia: Field and Laboratory Approaches

2020 ◽  
Vol 53 (10) ◽  
pp. 1492-1501
Author(s):  
N. D. Ananyeva ◽  
S. V. Sushko ◽  
K. V. Ivashchenko ◽  
V. I. Vasenev
Keyword(s):  
Microbial Respiration ◽  
European Russia ◽  
Forest Steppe ◽  
Soil Microbial ◽  
Soil Microbial Respiration ◽  
Steppe Ecosystems

scholarly journals Dust-related impacts of mining operations on rangeland vegetation and soil: a case study in Yazd province, Iran

2021 ◽  
Author(s):  
Shahab IbrahimPour ◽  
Alireza KhavaninZadeh ◽  
Ruhollah Taghizadeh mehrjardi ◽  
Hans De Boeck ◽  
Alvina Gul
Keyword(s):  
Seed Germination ◽  
Vegetation Cover ◽  
Microbial Respiration ◽  
Germination Rate ◽  
Windward Side ◽  
Leeward Side ◽  
Mining Operations ◽  
Soil Microbial ◽  
Soil Microbial Respiration ◽  
The Impact

Abstract Destructive mining operations are affecting large areas of natural ecosystems, especially in arid lands. The present study aims at investigating the impact of iron mine exploitation on vegetation and soil in Nodoushan (Yazd province, central Iran). Based on the dominant wind, topography, slope, vegetation and soil of the area, soil and vegetation parameters close to ​the mine were recorded and analyzed according to the distance from the mine. In order to obtain the vegetation cover, a transect and plot on the windward and leeward side of the mine, with 100 m intervals and three replicates at each sampling location was used, yielding 96 soil samples. The amount of dust on the vegetation, the seed weight and seed germination rate of Artemisia sp. as the dominant species within the area, and the soil microbial respiration were measured. The relationship between vegetation cover and distance from the mine was not linear, which was due to an interplay between pollution from the mine and local grazing, while other factors did increase or decrease linearly. The results showed that, as the distance from the mine increased, the weight of 1000 seeds of Artemisia sp. was significantly increased from 271 to 494 mg and seed germination rate and soil microbial respiration were significantly increased from 11.7 to 48.4 % and from 4.5 to 5.9 mg CO2 g− 1 soil day− 1 respectively, while the amount of dust significantly decreased from 43.5 to 6 mg (g plant)−1 between the distance of 100 to 600 m from the mine in the leeward direction. A similar trend was observed in the windward side, though negative effects were lower compared to the same distance along the leeward sample locations. The direct and indirect effects on plant growth and health from mining impacts generally decreased linearly with increasing distance from the mine, up to at least 600 m. Our study serves as a showcase for the potential of bio-indicators as a cost-effective method for assessing impacts of mining activities on the surrounding environment.

Soil microbial biomass and functional diversity in urban forest parks and suburban forests of various biomes in European Russia

2021 ◽  
Author(s):  
Nadezhda Ananyeva ◽  
Ruslan Khatit ◽  
Sofia Sushko ◽  
Anna Buyvolova ◽  
Andrey Dolgikh ◽  
...  
Keyword(s):  
Microbial Biomass ◽  
Urban Forest ◽  
European Russia ◽  
Deciduous Forests ◽  
Forest Steppe ◽  
Soil Microbial ◽  
Explained Variance ◽  
Bioclimatic Conditions ◽  
Forest Parks ◽  
Suburban Forests

<p>Forest parks play an important role in the sustainable functioning of urban ecosystems. In contrast to natural forests, urban forests are under continuous anthropogenic pressure, affecting the soil microbial community functioning and its capacity to provide many ecosystem services. Moreover, another significant factor determining such functioning is bioclimatic conditions, i.e., city geographic location. Our study aims to examine the effect of urbanization on soil microbial biomass and functional diversity along a latitudinal gradient of European Russia. Urban forest parks (UFP) were chosen in Moscow, Tula, and Belgorod cities located in mixed coniferous-broadleaved forests, deciduous forests, and forest-steppe biomes of European Russia, respectively (17 sites). Outside of the cities the reference suburban forests (SUF) were selected (12 sites). When selecting sites, we considered the following criteria: i) same soil reference group within the biome (Retisols, Luvisols, Phaeozems in mixed coniferous-broadleaved forests, deciduous forests, and forest-steppe, respectively), ii) loam parent materials, and iii) forest aged ≥60 years. In each UFP and SUF, five spatially distributed plots were chosen, in which soil samples were taken from the upper 10 cm layer without litter (totally 85 and 60 for UFP and SUF). For freshly collected soil samples, microbial biomass carbon content (MBC, substrate-induced respiration method) and basal respiration (BR; rate of CO<sub>2</sub> release) were measured, then the ratio BR / MBC = <em>q</em>CO<sub>2</sub> was calculated. The community level physiological profile of soil microorganisms (CLPP, MicroResp<sup>TM</sup> technique) indicating the microbial ability to utilize different organic substrates (carbohydrates, acids: amino, carboxylic, phenolic, 14 totally) was tested. CLPP data were used to calculate the Shannon–Wiener diversity index (H<sub>CLPP</sub>).</p><p>It was found that soil BR decreased on average from SUF to USP in all studied biomes, while the MBC content did not change significantly. A significant increase of MBC in USP and SUF soils was observed from north to south (from mixed coniferous-broadleaved forests to forest-steppe), and for <em>q</em>CO<sub>2</sub> – decreasing. The CLPP of the studied soils were dominated by microorganisms consuming carboxylic acids (ascorbic and citric) and carbohydrates (glucose, fructose, galactose). Cluster analysis identified two groups that differed by soil CLPP: i) mixed coniferous-broadleaved forests and deciduous forests (Moscow, Tula) and ii) forest-steppe (Belgorod). Soil H<sub>CLPP</sub> index didn’t significantly differ between SUF and UFP in all studied biomes. Two-way ANOVA showed that soil MBC, <em>q</em>CO<sub>2</sub>, and H<sub>CLPP</sub> changes were more associated with bioclimatic conditions (18-47% of explained variance, P <0.05) than urbanization (P> 0.05). On contrary, soil BR was more sensitive to urbanization (4% of explained variance, P <0.05) than to the change of bioclimatic conditions (P> 0.05). Notably, driving factors of spatial variation for the studied soil microbial properties within each city (53-92% unexplained variance) have yet to be identified.</p><p> </p><p>This study was supported by the Russian Foundation for Basic Research, project No. 20-04-00148.</p>

scholarly journals Soil microbial respiration in arctic soil does not acclimate to temperature

2008 ◽  
Vol 11 (10) ◽  
pp. 1092-1100 ◽  
Author(s):  
Iain P. Hartley ◽  
David W. Hopkins ◽  
Mark H. Garnett ◽  
Martin Sommerkorn ◽  
Philip A. Wookey
Keyword(s):  
Microbial Respiration ◽  
Soil Microbial ◽  
Soil Microbial Respiration ◽  
Arctic Soil

Grassland soil microbial respiration responses to urea and litter applications

2007 ◽  
Vol 50 (3) ◽  
pp. 321-326 ◽  
Author(s):  
F. M. Kelliher ◽  
J. R. Sedcole ◽  
I. Emery ◽  
L. M. Condron
Keyword(s):  
Microbial Respiration ◽  
Grassland Soil ◽  
Soil Microbial ◽  
Soil Microbial Respiration

Effects of nitrogen additions on soil microbial respiration and its temperature sensitivity in a Tibetan alpine meadow

2018 ◽  
Vol 38 (7) ◽  
Author(s):  
叶成龙 YE Chenglong ◽  
张浩 ZHANG Hao ◽  
周小龙 ZHOU Xiaolong ◽  
周显辉 ZHOU Xianhui ◽  
郭辉 GUO Hui ◽  
...  
Keyword(s):  
Temperature Sensitivity ◽  
Alpine Meadow ◽  
Microbial Respiration ◽  
Soil Microbial ◽  
Soil Microbial Respiration ◽  
Nitrogen Additions

Soil microbial respiration responses of nitrogen addition: Evidence from a long-time semi-arid grassland soil incubation

2020 ◽  
Author(s):  
Zhaomin Wang ◽  
Zhongmiao Liu ◽  
Binhui Guo ◽  
Zhengchao Qi ◽  
Decao Niu ◽  
...  
Keyword(s):  
Microbial Respiration ◽  
Global Climate ◽  
Nitrogen Concentration ◽  
Terrestrial Ecosystems ◽  
Carbon Pools ◽  
N Addition ◽  
North West ◽  
Soil Microbial ◽  
Soil Microbial Respiration ◽  
Semi Arid

<p>Nitrogen is essential for the synthesis of key cellular compounds such as proteins and nucleic acids in all organisms, and it is one of the limiting elements in most terrestrial ecosystems. During past decades, terrestrial ecosystems nutrients availability have altered with nitrogen deposition increases rapidly so that under the soil microbial metabolism activities terrestrial ecosystem biogeochemical cycles are strongly affected. Therefore, maintaining the stability of soil carbon pools, especially microbial carbon pools has great importance for studying global carbon cycle and global climate change processes. Depending on whether soil microbial has already adapted to the environment nitrogen concentration, there exists different results, such as promotion, inhibition, and no impact. To date, how nitrogen will affect soil microbial respiration still has controversy. To determine the effects, we performed a 59 weeks incubation with the soil which has already treated with Urea for 9 years. The soil has been treated with four N addition levels in a semi-arid grassland where located in North-west part of China. We measured CO<sub>2</sub> effluxion under different treatments within the same temperature. Our results showed that during the first 8 weeks, soil microbial had strong responses about N addition and N9.2 showed greatest influence with soil microbial respiration. With the time passing, in the time of 9-59 weeks, N0 had highest soil microbial respiration rate while N2.3 was the lowest, this illustrated N2.3 had highest N use efficient (NUE), in order to meet soil microbial stoichiometry, microbial growth became strong C-limitation under the N2.3 treatment. What’s more, comparing with other studies which we shared same study area, we also found that the time of nitrogen application also had strong effect on soil microbial respiration. These results highlight the importance of microbial respiration and may also help us to have a better understand about how N deposition controls terrestrial C flows.</p>

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