Soil respiration and microbial biomass peculiarities as influenced by different land use intensity

Muraškienė, Milda; Aleinikovienė, Jūratė; Skuodienė, Regina; Tomchuk, Donata; Armolaitis, Kęstutis

doi:10.13080/z-a.2020.107.001

Cited by 3 publications

(4 citation statements)

References 24 publications

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“…Decomposition of the organic residues to the stable SOC is a microbiological process, and it is influenced by the activity of microorganisms. The biomass and activity of soil microorganisms of agrarian origin depend on the ecotope (Rousk et al, 2009;Muraškienė et al, 2020), while the quality of organic matter is related to growing grass species because they directly influence the quality of organic residues (De Deyn et al, 2011).…”

Section: Resultsmentioning

confidence: 99%

“…The greatest MBC stock at 0-20 cm soil depth was determined in red clover-grass and hybrid clover-grass swards. Not only growing agricultural plants but also microorganisms are influenced by soil liming (Muraškienė et al, 2020). In the 2nd year of sward formation, the MBC content increased by 1.7 times in the soil with pH 5.0 and by 2.0 times in the naturally acidic soil compared to the year of sowing (Tables 2 and 3).…”

Section: Resultsmentioning

confidence: 99%

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Impact of sward formation on soil organic carbon variation and relations with soil microbial activity

Skuodienė

Aleinikovienė

Tomchuk

et al. 2022

Zemdirbyste-Agriculture

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The aim of the study was to estimate the impact of temporal sward formation on soil organic carbon (SOC) variation and soil microbial biomass carbon (MBC) content in rhizosphere. The soil of experimental sites was Bathygleyic Dystric Glossic Retisol, where the soil acidity (pH) was 3.9 and 5.0, and four mixtures of legumes and grasses were cultivated. The mixtures were composed of one legume variety and two grass varieties -timothy (Phleum pratense L.) 35% and meadow grass (Poa pratensis L.) 15%, 50% of each: 1) red clover (Trifolium pratense L.), 2) white clover (Trifolium repens L.), 3) hybrid clover (Trifolium hybridum L.), and 4) alfalfa (Medicago sativa L.). In the soil of different swards, SOC was more accumulated at 0-10 cm depth. The species composition of the sward did not have any significant influence on the studied indicators. In the soil of swards with pH 5.0, the SOC content in three years increased by 3.3%, SOC stock by 8.5%, and the C to N ratio was favourable for the SOC accumulation. In the naturally acidic soil (pH 3.9), the SOC content and SOC stock decreased by 12.0% and 3.3%, respectively. In the 4th year of sward formation, irrespective of the soil acidity, the SOC stock decreased, but it was similar as in the beginning of sward formation. Sward formation had a significant impact on the soil MBC. In the 2nd year of sward formation, the MBC content increased by 1.7 times in the soil with pH 5.0 and by 2 times in the naturally acidic soil compared to the year of sowing and remained relatively stable in the 3rd and the 4th year of sward formation irrespective of the soil acidity.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Impact of sward formation on soil organic carbon variation and relations with soil microbial activity

Skuodienė

Aleinikovienė

Tomchuk

et al. 2022

Zemdirbyste-Agriculture

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“…8a and b). In addition, several field control experiments highlighted the fact that soil microorganisms are the primary indicators that can reflect the influences of litter on soil respiration (Muraskiene et al, 2020), due to the ability of soil microorganisms to fix C from litter (Sui and Zhou, 2013;Xun et al, 2016). This ability could explain the positive effects of soil microorganisms on RS rate and the negative effects on the rates of RS+L and RL (Fig.…”

Section: Correlations Between Soil Respiration and Soil Parameters Un...mentioning

confidence: 99%

Response of soil respiration to short-term changes in precipitation and nitrogen addition in a desert steppe

Ma,

Pang,

et al. 2023

J. Arid Land

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Changes in precipitation and nitrogen (N) addition may significantly affect the processes of soil carbon (C) cycle in terrestrial ecosystems, such as soil respiration. However, relatively few studies have investigated the effects of changes in precipitation and N addition on soil respiration in the upper soil layer in desert steppes. In this study, we conducted a control experiment that involved a field simulation from July 2020 to December 2021 in a desert steppe in Yanchi County, China. Specifically, we measured soil parameters including soil temperature, soil moisture, total nitrogen (TN), soil organic carbon (SOC), soil microbial biomass carbon (SMBC), soil microbial biomass nitrogen (SMBN), and contents of soil microorganisms including bacteria, fungi, actinomyces, and protozoa, and determined the components of soil respiration including soil respiration with litter (RS+L), soil respiration without litter (RS), and litter respiration (RL) under short-term changes in precipitation (control, increased precipitation by 30%, and decreased precipitation by 30%) and N addition (0.0 and 10.0 g/(m 2 a)) treatments. Our results indicated that short-term changes in precipitation and N addition had substantial positive effects on the contents of TN, SOC, and SMBC, as well as the contents of soil actinomyces and protozoa. In addition, N addition significantly enhanced the rates of RS+L and RS by 4.8% and 8.0% (P<0.05), respectively. The increase in precipitation markedly increased the rates of RS+L and RS by 2.3% (P<0.05) and 5.7% (P<0.001), respectively. The decrease in precipitation significantly increased the rates of RS+L and RS by 12.9% (P<0.05) and 23.4% (P<0.001), respectively. In contrast, short-term changes in precipitation and N addition had no significant effects on RL rate (P>0.05). The mean RL/RS+L value observed under all treatments was 27.63%, which suggested that RL is an important component of soil respiration in the desert steppe ecosystems. The results also showed that short-term changes in precipitation and N addition had significant interactive effects on the rates of RS+L, RS, and RL (P<0.001). In addition, soil temperature was the most important abiotic factor that affected the rates of RS+L, RS, and RL. Results of the correlation analysis demonstrated that the rates of RS+L, RS, and RL were closely related to soil temperature, soil moisture, TN, SOC, and the contents of soil microorganisms, and the structural equation model revealed that SOC and SMBC are the key factors influencing the rates of RS+L, RS, and RL. This study provides further insights into the characteristics of soil C emissions in desert steppe ecosystems in the context of climate change, which can be used as a reference for future related studies.

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“…Agrophytocenoses are dynamic; they change, adjusting to the annual meteorological and hydrological conditions. Human activity has a great importance as well [ 1 , 2 ]. An important feature for the cenopopulation to renew and exist is keeping the seeds viable as long as possible.…”

Section: Introductionmentioning

confidence: 99%

Soil Seed Banks and Their Relation to Soil Properties in Hilly Landscapes

Skuodienė,

Matyžiūtė,

Šiaudinis

2023

Plants

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For the prevention of hilly soils from erosion, a smart selection of crop rotations is very important. The aim of this study was to investigate the influence of different agrophytocenoses on seed numbers in the soil runoff sediments and soil seed banks’ relations to soil properties in hilly landscapes. This study analyzes long-term monitoring data from three different agrophytocenoses (permanent grassland, cereal–grass crop rotation and crop rotation with a row crop) set up on slopes of 9–11° steepness with collectors for soil and water installed. The soil of the southern exposition slope was a slightly eroded Eutric Retisol. In the soil of permanent grassland, the number of seeds was 4036 seeds m−2, 6.0 and 3.2 times smaller compared to cereal–grass crop rotation and crop rotation with a row crop. The seeds found in the soil runoff sediments composed, on average, 0.9% of the soil seed bank, and the number of seeds depended on the number of days with heavy precipitation during the plant vegetation period, as well as on the plant communities grown in a particular rotation. Correlation analysis showed the seed numbers’ dependence on the soil’s chemical and physical properties. Hill slopes were not affected by water erosion, when agrophytocenoses were based on perennial grassland and also cereal–grass crop rotation, where reduced soil tillage was applied.

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Soil respiration and microbial biomass peculiarities as influenced by different land use intensity

Cited by 3 publications

References 24 publications

Impact of sward formation on soil organic carbon variation and relations with soil microbial activity

Impact of sward formation on soil organic carbon variation and relations with soil microbial activity

Response of soil respiration to short-term changes in precipitation and nitrogen addition in a desert steppe

Soil Seed Banks and Their Relation to Soil Properties in Hilly Landscapes

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