Soil aggregate stability and wind erodible fraction in a semi-arid environment of White Nile State, Sudan

2014 ◽  
Author(s):  
Mohamed Eltom Elhaja ◽  
Ibrahim Saeed Ibrahim ◽  
Hassan Elnour Adam ◽  
Elmar Csaplovics
Keyword(s):  
Aggregate Stability ◽  
Arid Environment ◽  
Soil Aggregate ◽  
Soil Aggregate Stability ◽  
White Nile ◽  
Erodible Fraction ◽  
Semi Arid

Multi-scale variability in soil aggregate stability: Implications for understanding and predicting semi-arid grassland degradation

Geoderma ◽  
2007 ◽  
Vol 140 (1-2) ◽  
pp. 106-118 ◽  
Author(s):  
Simon B. Bird ◽  
Jeffrey E. Herrick ◽  
Michelle M. Wander ◽  
Leigh Murray
Keyword(s):  
Aggregate Stability ◽  
Soil Aggregate ◽  
Grassland Degradation ◽  
Soil Aggregate Stability ◽  
Multi Scale ◽  
Semi Arid

Dynamics of soil aggregate stability as induced by potassium in a soil-plant system

2021 ◽  
pp. 1-9
Author(s):  
Surachet Aramrak ◽  
Natthapol Chittamart ◽  
Worachart Wisawapipat ◽  
Wutthida Rattanapichai ◽  
Mutchima Phun-Iam ◽  
...  
Keyword(s):  
Aggregate Stability ◽  
Soil Aggregate ◽  
Soil Aggregate Stability ◽  
Plant System

scholarly journals Dynamics of Soil Organic Carbon and Labile Carbon Fractions in Soil Aggregates Affected by Different Tillage Managements

2021 ◽  
Vol 13 (3) ◽  
pp. 1541
Author(s):  
Xiaolin Shen ◽  
Lili Wang ◽  
Qichen Yang ◽  
Weiming Xiu ◽  
Gang Li ◽  
...  
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Soil Aggregates ◽  
Aggregate Stability ◽  
Soil Aggregate ◽  
No Tillage ◽  
Labile Carbon ◽  
Carbon Fractions ◽  
Soil Aggregate Stability ◽  
Positive Effects

Our study aimed to provide a scientific basis for an appropriate tillage management of wheat-maize rotation system, which is beneficial to the sustainable development of agriculture in the fluvo-aquic soil areas in China. Four tillage treatments were investigated after maize harvest, including rotary tillage with straw returning (RT), deep ploughing with straw returning (DP), subsoiling with straw returning (SS), and no tillage with straw mulching (NT). We evaluated soil organic carbon (SOC), dissolved organic carbon (DOC), permanganate oxidizable carbon (POXC), microbial biomass carbon (MBC), and particulate organic carbon (POC) in bulk soil and soil aggregates with five particle sizes (>5 mm, 5–2 mm, 2–1 mm, 1–0.25 mm, and <0.25 mm) under different tillage managements. Results showed that compared with RT treatment, NT treatment not only increased soil aggregate stability, but also enhanced SOC, DOC, and POC contents, especially those in large size macroaggregates. DP treatment also showed positive effects on soil aggregate stability and labile carbon fractions (DOC and POXC). Consequently, we suggest that no tillage or deep ploughing, rather than rotary tillage, could be better tillage management considering carbon storage. Meanwhile, we implied that mass fractal dimension (Dm) and POXC could be effective indicators of soil quality, as affected by tillage managements.

scholarly journals Sludge amendment accelerating reclamation process of reconstructed mining substrates

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Dan Li ◽  
Ningning Yin ◽  
Ruiwei Xu ◽  
Liping Wang ◽  
Zhen Zhang ◽  
...  
Keyword(s):  
Soil Structure ◽  
Aggregate Stability ◽  
Soil Aggregate ◽  
Soil Reclamation ◽  
Soil Restoration ◽  
Total Biomass ◽  
Soil Aggregate Stability ◽  
Mining Soil ◽  
Positive Correlations ◽  
Reclamation Process

AbstractWe constructed a mining soil restoration system combining plant, complex substrate and microbe. Sludge was added to reconstructed mine substrates (RMS) to accelerate the reclamation process. The effect of sludge on plant growth, microbial activity, soil aggregate stability, and aggregation-associated soil characteristics was monitored during 10 years of reclamation. Results show that the height and total biomass of ryegrass increases with reclamation time. Sludge amendment increases the aggregate binding agent content and soil aggregate stability. Soil organic carbon (SOC) and light-fraction SOC (LFOC) in the RMS increase by 151% and 247% compared with those of the control, respectively. A similar trend was observed for the glomalin-related soil protein (GRSP). Stable soil aggregate indexes increase until the seventh year. In short, the variables of RMS determined after 3–7 years insignificantly differ from those of the untreated sample in the tenth-year. Furthermore, significant positive correlations between the GRSP and SOC and GRSP and soil structure-related variables were observed in RMS. Biological stimulation of the SOC and GRSP accelerates the recovery of the soil structure and ecosystem function. Consequently, the plant–complex substrate–microbe ecological restoration system can be used as an effective tool in early mining soil reclamation.

scholarly journals Short-Term Dynamics of Soil Aggregate Stability in the Field

2014 ◽  
Vol 78 (4) ◽  
pp. 1168-1176 ◽  
Author(s):  
Baptiste Algayer ◽  
Yves Le Bissonnais ◽  
Frédéric Darboux
Keyword(s):  
Aggregate Stability ◽  
Soil Aggregate ◽  
Short Term ◽  
Soil Aggregate Stability

The effect of four calcium-based amendments on soil aggregate stability of two sandy topsoils

2018 ◽  
Vol 182 (2) ◽  
pp. 159-166 ◽  
Author(s):  
Gabriela Vargas ◽  
José Verdejo ◽  
Adrian Rivera ◽  
Domingo Suárez ◽  
Cristian Youlton ◽  
...  
Keyword(s):  
Aggregate Stability ◽  
Soil Aggregate ◽  
Soil Aggregate Stability

scholarly journals Root density drives aggregate stability of soils of different moraine ages in the Swiss Alps

2021 ◽  
Author(s):  
Konrad Greinwald ◽  
Tobias Gebauer ◽  
Ludwig Treuter ◽  
Victoria Kolodziej ◽  
Alessandra Musso ◽  
...  
Keyword(s):  
Root Length Density ◽  
Plant Cover ◽  
Aggregate Stability ◽  
Soil Aggregate ◽  
Root Density ◽  
Swiss Alps ◽  
Landscape Development ◽  
Soil Aggregate Stability ◽  
Alpine Regions ◽  
Vegetation Parameters

Abstract Aims The stability of hillslopes is an essential ecosystem service, especially in alpine regions with soils prone to erosion. One key variable controlling hillslope stability is soil aggregate stability. We aimed at identifying dominant controls of vegetation parameters on aggregate stability and analysed their importance for soil aggregate stability during landscape development. Methods We quantified the aggregate stability coefficient (ASC) and measured plant cover, diversity, root mass and root length, density (RMD, RLD) along two chronosequences with contrasting bedrocks (siliceous, calcareous) in the Swiss Alps. Results We found that ASC developed slower along the calcareous chronosequence. Furthermore, we observed a significant positive effect of vegetation cover and diversity on ASC that was mediated via root density. These relationships developed in a time-depended manner: At young terrain ages, vegetation parameters had a strong effect on aggregate stability compared to older stages. Moreover, RLD was the most powerful predictor of ASC on young terrain, whereas on older moraines RMD became more important. Conclusions We highlight that root density plays a major role in governing ASC for soils differing in moraine ages. The changing importances of RLD and RMD for ASC development suggest different mechanistic linkages between vegetation and hillsope stability during landscape development.

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