Soil Aggregate
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
اقرأ أكثرHow Does Fine Root Influence Aggregates? Comparing Root
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
اقرأ أكثرIncreased soil aggregate stability is strongly
The stability of soil aggregates is an indicator of restoration of soil in degraded ecosystems. A multitude of factors such as properties of plant roots and soil …Web
اقرأ أكثرProcess sequence of soil aggregate formation
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
اقرأ أكثرArbuscular mycorrhizal fungal species identity governs plant water
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
اقرأ أكثرEffect of phenolic acids on the formation and stabilization of soil
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
اقرأ أكثرDynamics of aggregate-associated organic carbon after long-term
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
اقرأ أكثرEarthworms and eco-consequences: Considerations to soil biological
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
اقرأ أكثرPlant root and mycorrhizal fungal traits for …
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
اقرأ أكثرSoil organic matter dynamics mediated by arbuscular …
Arbuscular mycorrhizal fungi-mediated aggregate turnover and its hierarchical reorganization processes could subsequently affect SOM dynamics and stabilization (Six et al., 2004; De Gryze et al., …Web
اقرأ أكثرSoil Nutrients Drive Microbial Changes to Alter Surface Soil Aggregate
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
اقرأ أكثرUG-Ap-Stabilized Base | Recycled Materials Resource Center
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
اقرأ أكثرDoes mycorrhizal inoculation improve plant survival, …
Inoculation improved plant survival significantly, but it delayed aggregate stabilization relative to the noninoculated site. Higher …Web
اقرأ أكثرMechanisms of Carbon Sequestration in Highly Organic …
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
اقرأ أكثرContributions of interacting biological mechanisms to soil aggregate
@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
اقرأ أكثرSoil aggregate stability in Mediterranean and tropical agro
Plant root systems and associated mycorrhizal fungi have been increasingly recognised as important drivers of soil processes such as aggregate stability, a key …Web
اقرأ أكثرSoil Aggregate Stability: A Review
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
اقرأ أكثرSoil aggregation, aggregate stability, organic carbon and nitrogen …
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
اقرأ أكثرGlycoproteins of arbuscular mycorrhiza for soil carbon sequestration
The resulting microenvironment enables microbial degradation of organic matter and produces EPS for additional aggregate stabilization (Awad et al., 2013; Wright and Upadhyaya, 1998) (Fig. 4). The EPS function is to support plants with water and nutrients and to protect against drought stress (Carminati et al., 2011; Costa et al., 2018).Web
اقرأ أكثرThe Underlying Mechanism of Soil Aggregate Stability by
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
اقرأ أكثرProcess sequence of soil aggregate formation
This macroaggregate formation, which was induced or initiated by the added macroaggregate-forming materials, however, was much less effective and particularly …Web
اقرأ أكثرLitter quantity, litter chemistry, and soil texture control
Because each SOC fraction is theoretically distinct, the mechanisms controlling the dynamics of each fraction should vary. For example, the total quantity of SOC stored within the FLF fraction may decline when plant litter inputs are reduced (Lajtha et al. 2014) but may not change as a function of soil texture (Kölbl and Kögel-Knabner 2004).In …Web
اقرأ أكثرEfficacy of rhizobacterial exopolysaccharides in improving plant …
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
اقرأ أكثرRoot effects on soil organic carbon: a double-edged sword
Therefore, net changes in soil aggregation induced by root growth underestimate the real contribution of aggregate turnover to SOC loss and SOC gain. ... where plant roots accelerate stabilization of SOC, but at the same time can accelerate decomposition of unprotected SOC (Fig. 3c). A fourth scenario is where soils are C …Web
اقرأ أكثرEarthworms, Soil Structure, Fertility, and Productivity
Earthworms have extremely important influences on soil structure, fertility, and productivity, in forming aggregates; improving soil physical conditions; providing channels and burrows for drainage, aeration, and root growth; increasing water-holding capacity; and generally improving plant growth and nutrient uptake (Edwards, 2004).It is …Web
اقرأ أكثرThe Underlying Mechanism of Soil Aggregate Stability by Fungi …
In this review, we summarize the unique and common trait of fungi associated with soil aggregate stabilization, mainly including mycorrhizal fungi and …Web
اقرأ أكثرDivergent carbon stabilization pathways in aggregates in Ultisols …
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
اقرأ أكثرPlant root and mycorrhizal fungal traits for …
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
اقرأ أكثرSoil 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 agents of aggregate formation and aggregate stabilization are presented and discussed in this review. Aggregate stability is difficult to quantify and interpret. The aim of aggregate stability tests is to ...Web
اقرأ أكثرVisualizing the dynamics of soil aggregation as …
Stable soils provide valuable ecosystem services and mechanical soil stability is enhanced by the presence of arbuscular …Web
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