Temperature adaptation of soil microbial respiration in alpine, boreal and tropical soils: An application of the square root (Ratkowsky) model

2020 ◽  
Author(s):  
Jinquan Li ◽  
Erland Bååth ◽  
Junmin Pei ◽  
Changming Fang ◽  
Ming Nie
Keyword(s):  
Microbial Respiration ◽  
Tropical Soils ◽  
Temperature Adaptation ◽  
Square Root ◽  
Soil Microbial ◽  
Soil Microbial Respiration

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.

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>

scholarly journals Effect of Buckwheat and Potato as Forecrops on Soil Microbial Properties in Crop Rotation

2012 ◽  
Vol 66 (4-5) ◽  
pp. 185-191
Author(s):  
Vilhelmīne Šteinberga ◽  
Olga Mutere ◽  
Inga Jansone ◽  
Ina Alsiņa ◽  
Laila Dubova
Keyword(s):  
Enzymatic Activity ◽  
Crop Rotation ◽  
Microbial Respiration ◽  
Ph Value ◽  
Solanum Tuberosum L ◽  
Temperate Climate ◽  
Soil Microbial ◽  
Soil Microbial Respiration ◽  
Cereal Breeding ◽  
Number Of Bacteria

Field trials were carried out at the experimental cereal breeding fields in Stende (Latvia), an area characterized by a northern temperate climate. The soil had been under short-term organic or conventional crop management and was then subjected to crop rotation, using buckwheat (Fagopyrum esculentum Moench.) and potato (Solanum tuberosum L.) as the forecrops; wheat (Triticum aestivum L.) and oat (Avena sativa L.) as the following crops; and two fertilizer regimes under common organic and conventional practices. As the evaluation criteria of the soil quality, physico-chemical (pH value, organic matter, N, P, K) were tested. In addition, the following biological properties were estimated: plate counts of different physiological groups of microorganisms, soil microbial respiration, enzymatic activity (urease, dehydrogenase and fluoresceine diacetate hydrolysis) of soil microorganisms. Soil microbial respiration activity, FDA hydrolysis and urease activity showed a tendency to decrease in the soil after potato cultivation as the forecrop. The number of bacteria was higher in plots with wheat, and the actinomycete count was lower after oat cultivation. The number of bacteria, actinomycetes, fungi, as well as soil microbial respiration and enzymatic activity, fluctuated due to weather seasonality.

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