Soil aggregate stability is affected by some factors such as organic carbon, soil microorganisms, fauna, plant residues, mineral composition, ion exchange and soil moisture [82, 141]. The presence of fungi, bacteria, plant roots, and earthworms resulted in the formation of macroaggregates [ 147 ].Web

The other combinations negatively affect the soil as well as plant attributes. The stabilization of the soil aggregates through the wet method depicted 4–28% and 1.2–14% more stable aggregates under EPS-producing ... The soil aggregate stabilization by EPS production through the studied rhizobacteria might be the possible reason for ...Web

In aggregate stabilization we are by definition (Martin et al. 1955) concerned with both the forces and conditions that exist within the aggregate, and with those that exist on the outside. ... 1963). Plant growth The best aggregated soils that exist anywhere are those that have been continually in grass for many years (Martin, 1944; Mazurak ...Web

Response network and regulatory measures of plant-soil-rhizosphere environment to drought stress. Zhenqi Liao, ... Zhijun Li, in Advances in Agronomy, 2023. 3.1 Effects of drought stress on stability of soil aggregates. Soil aggregate is the basic unit of soil structure. It is composed of a series of aggregate particles with different particle sizes in …Web

A large number of papers are devoted to characterizing and understanding the aggregate formation-stabilization processes. Most of the papers concern the nature of the microbiological factors. ... Lüscher A (2001) Impact of elevated CO 2 on soil organic matter dynamics as related to changes in aggregate turnover and residue quality. Plant Soil ...Web

Amelung et al. (37) reported an initial aggregate stabilization by extracellular polymeric substances, but also a quick loss of organic gluing agents in a pot experiment with multiple stable ...Web

Plant litters incorporated in soils are decomposed by microorganisms and partially transformed into soil organic matter (SOM) through mineral-organic association and physical protection in soil aggregates. ... Soil aggregate stabilization by a saprophytic lignin-decomposing basidiomycete fungus I. Microbiological aspect. Biol. Fertil. Soils ...Web

This macroaggregate formation, which was induced or initiated by the added macroaggregate-forming materials, however, was much less effective and particularly …Web

Over long time periods this decreases aggregate stability 3,16, whereas in the short term (e.g. five years) the effects of bare fallow treatment on aggregate stability 2 and on structure forming ...Web

Recently, Martens (2002) showed a strong correlation between aggregate stabilization and the plant phenolic acids released during soil mineralization. Kramer et al. (2012) suggested that dissolved ...Web

Drivers of soil C sequestration are linked to interaction with soil minerals, aggregate formation, but also regulated by the environment. Recent evidence highlights the interactions between plant tannins and fungal necromass as an overlooked pathway of soil C stabilization. Future studies should consider all these mechanisms of C stabilization.Web

The formation-stabilization-destruction process of soil aggregates is hugely complex, which is affected by ... Bessler H, Engels C, Habekost M, Gleixner G, Weigelt A, Weisser WW, Scheu S, Eisenhauer N (2013) Mechanisms linking plant community properties to soil aggregate stability in an experimental grassland plant diversity …Web

The key to strength development in stabilized base or subbase mixtures is in the matrix that binds the aggregate particles together. The strength of the matrix is affected by the cementitious material used in the mixture. The amount of cementitious material in a stabilized base or subbase mix usually ranges from 5 to 10 percent by weight of the ...Web

We tested the effects of specific plant–fungus combinations on aggregate stabilization, and whether hyphal length and root biomass determine stabilization, …Web

AMF (arbuscular mycorrhizal fungi) form symbiotic associations with more than two-thirds of the world's terrestrial plant species, including mulberry (Smith and Read, 2008), and also play a key role in soil aggregate formation and stabilization as well as in linkages between plant and soil systems (Wilson et al., 2010). Soil aggregates are ...Web

AimsOur study was intended to elucidate the involvement of three species of arbuscular mycorrhizal fungi (AMF) in the formation and stabilization of aggregates in semiarid soils with different textures and calcium carbonate contents.MethodsWe used a root-hyphae compartment approach to compare the effect of three AMF (Rhizophagus irregularis, …Web

@article{osti_938131, title = {Contributions of interacting biological mechanisms to soil aggregate stabilization in restored prairie.}, author = {Jastrow, J D and Miller, R M and Lussenhop, J and Environmental Research and Univ. of Illinois at Chicago}, abstractNote = {A better understanding of the soil aggregation process is needed to …Web

The composition and stability of soil aggregates are important indexes for evaluating soil quality. They are influenced by many factors in the soil system to varying degrees. The management of soil health is necessary to understand the importance and mechanism of the key factors in the composition and stability of soil aggregates. In this …Web

Recently, Martens (Citation 2002) showed a strong correlation between aggregate stabilization and the plant phenolic acids released during soil mineralization. Kramer et al. (Citation 2012) suggested that dissolved organic matter composed largely of aromatic acids accumulated preferentially with short-range ordered minerals in soil and could be ...Web

Soil Aggregate Stability: A Review. Soil aggregate stability is a crucial soil property affecting soil sustainability and crop production. A broad outline of the processes and …Web

In this review, we summarize the unique and common trait of fungi associated with soil aggregate stabilization, mainly including mycorrhizal fungi and …Web

Plant and mycorrhizal fungal species, respectively, differ in their contribution to soil aggregation (Reid & Goss, 1981; Angers & Caron, ... Regarding aggregate formation and stabilization, even though these …Web

Stable soils provide valuable ecosystem services and mechanical soil stability is enhanced by the presence of arbuscular …Web

Accordingly, the C stabilization pathway is the transfer and protection of plant-derived recalcitrant C in microaggregates. This result is consistent with the aggregate hierarchy hypothesis that macroaggregates serve as the primary sources of C flow in aggregate systems, and microaggregates (<0.25 mm) serve as the final stage in organic …Web

SOM exerts a decisive influence on the formation and stabilization of aggregates because of its diverse molecular structure and the differences in decomposition rates of SOM fractions in soil ...Web

The aggregate hierarchy is mediated by plants and fungal hyphae as well as by different organic gluing agents and inorganic building units (Totsche et al., 2018), which can be more or less developed depending on soil type and management (e.g., Tisdall and Oades, 1982, Six et al., 2004, Bronick and Lal, 2005, Kögel-Knabner and Amelung, 2021 ...Web

aggregate stabilization and turnover time have import-ant consequences for soil organic carbon (SOC) dynamics [64]. In most of the case, change in percent water stable aggregates (WSA), mean weight diameter (MWD) and geometric mean diameter (GMD) is used for assessment of soil aggregate stability [63]. The formation, stabilization and …Web

We define soil aggregate formation as the initial binding together of particles, whereas soil stabilization is the process that renders the aggregate increasingly resistant to the application of disintegrating …Web

Because the restoration chronosequence provides a gradient of aggregate stabilization, along with gradients of root and hyphal proliferation and of various C pools, it may be used to examine how different organic binding mechanisms interact to promote aggregate stabilization. ... However, the impact of plant diversity loss on the soil …Web

Soil OC stabilization in soil aggregate is the principal mechanism for soil C sequestration 14. However, the contribution of associated-aggregate OC to bulk soil C accumulation or losses following ...Web

Aggregate size class distributions (a) and transformation pathways, percentage of the original size class that is transformed into the new size class (b) (mean ± SE, N = 3) in soils incubated with or without AMF for five weeks.L Ma—large macroaggregates (1–2 mm), S Ma—small macroaggregates (212–1000 μm), …Web

Inoculation improved plant survival significantly, but it delayed aggregate stabilization relative to the noninoculated site. Higher …Web

Revegetation has been reported as one of the most effective counter measures to reduce soil and water erosion on the Loess plateau in China. Soil aggregate stability and the distribution of organic carbon and nitrogen in different aggregate fractions would be affected by different plant communities. The objectives of this study were to …Web

Plant root systems and associated mycorrhizal fungi have been increasingly recognised as important drivers of soil processes such as aggregate stability, a key ecosystem property related to the stabilization of the soil structure and hence the mitigation of erosion (Bardgett et al. 2014; Rillig et al. 2015, Gould et al. 2016).Web