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1. Increasing land-use durations enhance soil microbial deterministic processes and network complexity and stability in an ecotone

Author:
Aiai Xu; Zhiying Guo; Kai Pan; Changkun Wang; Fangfang Zhang; Jie Liu; Xianzhang Pan
Source:
Applied soil ecology 2023 v.181 pp. 104630
ISSN:
0929-1393
Subject:
silt,   etc   ; clay; cropland; ecotones; grasslands; land use; sand; soil ecology; soil microorganisms; soil organic matter; total nitrogen; total phosphorus; China;     Show all 13 Subjects
Abstract:
... Studies of community assembly and species interactions are updating our view of the mechanisms underpinning microbial diversity in single-type ecosystems, yet they are rarely conducted in ecotones, such as the agro-pastoral ecotone of northern China (APEN) undergoing frequent land-use conversions. In this study, soil microbial assembly processes and co-occurrence patterns were examined in differen ...
DOI:
10.1016/j.apsoil.2022.104630

2. Mechanical and microscopic properties of soil according to the rate of increase in pore water pressure

Author:
Zhao Duan; Zhen-Yan Li; Yan-Bin Wu; Bing Niu; Rong-Jian Shen
Source:
Soil & tillage research 2023 v.225 pp. 105530
ISSN:
0167-1987
Subject:
silt loam soils,   etc   ; clay; deformation; electron microscopy; fractal dimensions; liquefaction; loess; loess soils; macropores; micropores; research; seepage; soil erosion; tillage; China;     Show all 15 Subjects
Abstract:
... Increases in pore water pressure affect the effective stress state of loess soil, resulting in deformation and even soil erosion. However, it is still unclear how the mechanical behaviours and microstructures of soil are influenced by the rate of increase in pore water pressure (RIPWP). To better understand the mechanical failure process and properties of soil under different RIPWPs, a series of c ...
DOI:
10.1016/j.still.2022.105530

3. Water retention characteristics and vegetation growth of biopolymer-treated silt soils

Author:
Siwei Wang; Xinxin Zhao; Junran Zhang; Tong Jiang; Shaokai Wang; Jindi Zhao; Zhihao Meng
Source:
Soil & tillage research 2023 v.225 pp. 105544
ISSN:
0167-1987
Subject:
silt,   etc   ; adhesion; biopolymers; cement; clay; environmental protection; gellan gum; germination; guar gum; hydrophilicity; research; soil pore system; soil water retention; sustainable development; tillage; vegetation; water holding capacity; watersheds; xanthan gum; Yellow River;     Show all 20 Subjects
Abstract:
... Cement and other traditional materials are frequently used to improve the properties of soil in the Yellow River Basin, the ecological environment has become severely polluted. To promote the environmental protection strategy of sustainable development, environmentally friendly biopolymers were used to treat typical silt samples collected from the Yellow River Basin. The water retention characteri ...
DOI:
10.1016/j.still.2022.105544

4. Erosion Behavior of Sand‐Silt Mixtures: Revisiting the Erosion Threshold

Author:
Peng Yao; Min Su; Zhengbing Wang; Leo C. van Rijn; Marcel J. F. Stive; Chunyang Xu; Yongping Chen
Source:
Water resources research 2022 v.58 no.9 pp. e2021WR031788
ISSN:
0043-1397
Subject:
silt; silt fraction,   etc   ; clay; research; sand; sediment transport; shear stress; skeleton; water;     Show all 9 Subjects
Abstract:
... The erosion threshold, beyond which bed sediments start to move, is a key parameter describing sediment transport processes. For silt‐dominated mixtures, in which the grain size is between sand and clay, existing experimental studies exhibit contradictory observations. That is, the erosion was either sand‐like or clay‐like, suggesting transitional erosion behavior. To explore the underlying mechan ...
DOI:
10.1029/2021WR031788

5. On compression behavior and particle breakage of carbonate silty sands

Author:
Chen-Xi Tong; Zong-Lei Dong; Quan Sun; Sheng Zhang; Jun-Xing Zheng; Daichao Sheng
Source:
Engineering geology 2022 v.297 pp. 106492
ISSN:
0013-7952
Subject:
silt fraction,   etc   ; carbonates; compressibility; deformation; geology;     Show all 5 Subjects
Abstract:
... Carbonate soils are high in compressibility and low in particle strength, and therefore need special treatment for many geotechnical applications. This paper presents comprehensive one-dimensional compression tests to investigate the compression behavior and particle breakage of carbonate soils with various initial particle size distributions (PSDs) and a wide range of initial void ratios at a hig ...
DOI:
10.1016/j.enggeo.2021.106492

6. Time dependence of hydraulic parameters estimation from transient analysis of mini disc infiltrometer measurements

Author:
Aparimita Priyadarshini Naik; Sreeja Pekkat
Source:
European journal of soil science 2022 v.73 no.2 pp. e13228
ISSN:
1351-0754
Subject:
silt; silt loam soils,   etc   ; equations; fractionation; hydraulic conductivity; infiltrometers; loamy sand soils; models; sand; silty clay loam soils; texture;     Show all 11 Subjects
Abstract:
... The transient analysis of mini disc infiltrometer (MDI) measurements is an established method for characterising near‐surface hydraulic characteristics of soils. The reliability of hydraulic characteristics obtained from transient analysis depends on the (1) adequacy of model, (2) adequacy of data, (3) measurement time and (4) measurement footprint. The measurement time dependence recommendations ...
DOI:
10.1111/ejss.13228

7. Estimating textural fractions of the USDA using those of the International System: A quantile approach

Author:
Eva Corral-Pazos-de-Provens; Ígor Rapp-Arrarás; Juan M. Domingo-Santos
Source:
Geoderma 2022 v.416 pp. 115783
ISSN:
0016-7061
Subject:
silt; silt fraction,   etc   ; USDA; clay; databases; models; particle size; particle size distribution; regression analysis; sand; soil horizons; soil surveys; texture;     Show all 13 Subjects
Abstract:
... In soil science, the two most frequently used classification systems for the soil particle size distribution are the schemes by the United States Department of Agriculture (USDA) and the so-called International System (IS), whose difference is the upper particle size limit of the silt fraction, namely, 0.02 mm for the IS and 0.05 mm for the USDA system. The existence of these and other systems cre ...
DOI:
10.1016/j.geoderma.2022.115783

8. The Impact of Salinization and Wind Erosion on the Texture of Surface Soils: An Investigation of Paired Samples from Soils with and without Salt Crust

Author:
Xinhu Li; Min Guo
Source:
Land 2022 v.11 no.7 pp. -
ISSN:
2073-445X
Subject:
silt; silt fraction,   etc   ; clay; dust; land; particle size distribution; salt content; soil texture; spatial variation; t-test; texture; watersheds; wind erosion;     Show all 13 Subjects
Abstract:
... Wind erosion removes fine soil particles and thus affects surface soil properties, but the existence of a salt crust could prevent wind erosion and protect fine soil particles. Such results referring to wind erosion affecting soil surface textural properties have been reported by many studies. However, it is still not clear whether soil properties differ between salt-crusted soils and adjacent soi ...
DOI:
10.3390/land11070999

9. Soil deformation after one water-drop impact – The effect of texture and soil moisture content

Author:
Rafał Mazur; Magdalena Ryżak; Agata Sochan; Michał Beczek; Cezary Polakowski; Bartosz Przysucha; Andrzej Bieganowski
Source:
Geoderma 2022 v.417 pp. 115838
ISSN:
0016-7061
Subject:
silt fraction; silt loam soils,   etc   ; deformation; energy; loamy sand soils; sandy loam soils; scanners; soil water content; texture; water content; water erosion;     Show all 11 Subjects
Abstract:
... The splash phenomenon (being the first stage of water erosion) is caused by the drops’ impact on the soil surface, resulting in the displacement of soil particles and the creation of a deformation – a small-sized crater. The aim of this research was to analyse the effect of the drops' impact energy, the initial moisture content, and the texture of the soils used (loamy sand, sandy loam, silty loam ...
DOI:
10.1016/j.geoderma.2022.115838

10. Comparing erosion and rill development processes by simulated upslope inflow in two red soils from subtropical China

Author:
Pei Tian; Yuwei Gong; Fanghua Hao; Lin Chen; Yang Yang; Wenzhao Guo; Huaqing Wu; Wenjie Zhang
Source:
Catena 2022 v.213 pp. 106139
ISSN:
0341-8162
Subject:
silt; silt fraction,   etc   ; Ultisols; bulk density; catenas; clay; clay fraction; energy; erodibility; rill erosion; runoff; sand; sand fraction; sediment yield; shale; soil texture; streams;     Show all 17 Subjects
Abstract:
... Rill erosion is an important component of soil erosion, however, the process and mechanism of rill erosion on red soil slopes are not clear enough. In this paper, runoff scouring experiments were conducted with five varying inflow rates (8.5, 10, 11.5, 13, 14.5 L min⁻¹ m⁻¹) and one slope (8°) using two typical red soils in subtropical China: Ultisols derived from shale (UDS) and Ultisols derived f ...
DOI:
10.1016/j.catena.2022.106139

11. Effect of Fertilisation with Ash from Biomass Combustion on the Mechanical Properties of Potato Tubers (Solanum tuberosum L.) Grown in Two Types of Soil

Author:
Ewa Szpunar-Krok; Małgorzata Szostek; Renata Pawlak; Józef Gorzelany; Dagmara Migut
Source:
Agronomy 2022 v.12 no.2 pp. -
ISSN:
2073-4395
Subject:
silt; silt loam soils,   etc   ; Chernozems; Luvisols; Solanum tuberosum; agronomy; biomass; biometry; combustion; deformation; energy; field experimentation; mechanical damage; potatoes; sustainable agriculture; thermodynamics; wastes; Poland;     Show all 18 Subjects
Abstract:
... The aim of the research was to determine the effect of fertilising with various doses of ash from biomass combustion (D2–D6) compared to control plots and classic NPK (D1) fertiliser on the morphological and mechanical properties of potato tubers (Solanum tuberosum L.). The field experiment was carried out in the years 2019–2021 (south-eastern Poland, 49°59′ N, 21°57′ E) on two types of soil: Gley ...
DOI:
10.3390/agronomy12020379

12. Correspondence between theory and practice of a Beerkan infiltration experiment

Author:
Vincenzo Bagarello; Michal Dohnal; Massimo Iovino; Jianbin Lai
Source:
Vadose zone journal 2022 v.21 no.5 pp. e20220
ISSN:
1539-1663
Subject:
silt loam soils,   etc   ; infiltration rate; models; sand; vadose zone;     Show all 5 Subjects
Abstract:
... The Beerkan infiltration experiment is carried out by inserting the ring a short depth into the soil and establishing a positive head of water on the infiltration surface for at least a part of the run. Nevertheless, the data are analyzed by assuming a fully unconfined infiltration process (ring insertion depth, d = 0 cm) and a null ponded depth of water (H = 0 cm). The influence of ring insertion ...
DOI:
10.1002/vzj2.20220

13. Pre-failure suction-induced deformation to inform early warning of shallow landslides: Proof of concept at slope model scale

Author:
L. Coppola; A. Reder; A. Tarantino; G. Mannara; L. Pagano
Source:
Engineering geology 2022 v.309 pp. 106834
ISSN:
0013-7952
Subject:
silt,   etc   ; accelerometers; deformation; landslides; meteorological data; models; rain; tensiometers;     Show all 8 Subjects
Abstract:
... The majority of the Landslide Early Warning Systems (LEWS) currently in operation are based on the monitoring of rainfall data alone and this limits their performance due to false alarms generated by rainfall thresholds that are inevitably set conservative. The accuracy of LEWS may be significantly enhanced by monitoring soil-based variables associated with the stress-strain response of the ground ...
DOI:
10.1016/j.enggeo.2022.106834

14. Geomorphological and spatial analysis of dust sources in Ilam Province, Iran

Author:
Majid Ahmadi-Molaverdi; Iraj Jabbari; Amanollah Fathnia
Source:
Sedimentary geology 2022 v.436 pp. 106168
ISSN:
0037-0738
Subject:
silt,   etc   ; clay; dust; dust emissions; models; rangelands; Iran; Middle East;     Show all 8 Subjects
Abstract:
... Dust storms, which have become an environmental crisis in the Middle East in recent years, are associated with increased sources of sediment production. There are several reasons for the emergence of these sources, with the interplay between geomorphological processes and the production of landforms, which are susceptible to dust emission under certain conditions, being considered as its main reas ...
DOI:
10.1016/j.sedgeo.2022.106168

15. Modeling Main and Interactional Effects of Some Physiochemical Properties of Egyptian Soils on Cation Exchange Capacity Via Artificial Neural Networks

Author:
O. M. Ibrahim; E. H. El-Gamal; Kh. M. Darwish; N. Kianfar
Source:
Eurasian soil science 2022 v.55 no.8 pp. 1052-1063
ISSN:
1064-2293
Subject:
silt,   etc   ; algorithms; cation exchange capacity; data collection; pH; prediction; sand;     Show all 7 Subjects
Abstract:
... The application of artificial neural networks (ANNs) in agricultural sciences has proved its importance as a mathematical modeling technique for prediction and providing information about the direct effects (relative importance) of the inputs. Many methods have been examined to measure the relative importance (direct or maineffects) of inputs: however, they never report any details regarding the r ...
DOI:
10.1134/S1064229322080051

16. Sources, burial flux and mass inventory of black carbon in surface sediments of the Daya Bay, a typical mariculture bay of China

Author:
Solomon Felix Dan; Dongyang Cui; Bin Yang; Xilong Wang; Zhiming Ning; Dongliang Lu; Zhenjun Kang; Haifang Huang; Jiaodi Zhou; Dandan Cui; Qiuping Zhong
Source:
Marine pollution bulletin 2022 v.179 pp. 113708
ISSN:
0025-326X
Subject:
silt,   etc   ; fossil fuels; inventories; mariculture; marine pollution; organic carbon; oxidation;     Show all 7 Subjects
Abstract:
... The contents of chemothermal oxidation (CTO)-derived black carbon (BC) and organic carbon (OC) and their stable isotopes (δ¹³CBC and δ¹³COC), including major elemental oxides, and grain sizes were measured to constrain the sources, burial flux, and mass inventory of BC in surface sediments of the Daya Bay. Surface sediments were mainly clayey silt (>90%) and contained 0.28–1.18% OC and 0.05–0.18% ...
DOI:
10.1016/j.marpolbul.2022.113708

17. Scour and liquefaction issues for anchors and other subsea structures in floating offshore wind farms: A review

Author:
B. Mutlu Sumer; Veysel Sadan Ozgur Kirca
Source:
Water Science and Engineering 2022 v.15 no.1 pp. 3-14
ISSN:
1674-2370
Subject:
silt,   etc   ; information sources; liquefaction; mathematical models; sand; soil; water; wind;     Show all 8 Subjects
Abstract:
... This article reviews scouring and liquefaction issues for anchor foundations of floating offshore wind farms. The review is organized in two sections: (1) the scouring issues for drag-embedment anchors (DEAs) and other subsea structures associated with DEAs such as tensioners, clump weights, and chains in floating offshore wind farms; and (2) the liquefaction issues for the same types of structure ...
DOI:
10.1016/j.wse.2021.11.002

18. The USLE soil erodibility nomograph revisited

Author:
Eva Corral-Pazos-de-Provens; Ígor Rapp-Arrarás; Juan M. Domingo-Santos
Source:
International soil and water conservation research 2022 v. no. pp. -
ISSN:
2095-6339
Subject:
silt,   etc   ; erodibility; nomogram; organic matter; research; sand fraction; water conservation;     Show all 7 Subjects
Abstract:
... The nomograph by Wischmeier et al. (1971) for calculating the K-factor in the USLE was extremely useful when there was low access to calculators. However, the generalised calculation of this factor requires the development of analytic procedures. This paper presents a detailed analysis of the nomograph and its underlying equation, which is applicable only when the silt plus very find sand fraction ...
DOI:
10.1016/j.iswcr.2022.07.001

19. Recovery of Soil Structure and Fine Root Distribution in Compacted Forest Soils

Author:
Jürgen Schäffer
Source:
Soil systems 2022 v.6 no.2 pp. -
ISSN:
2571-8789
Subject:
silt; silt loam soils,   etc   ; agricultural management; compliance; disturbed soils; fine roots; forests; mechanization; silvicultural practices; soil biota; soil compaction; soil depth; soil structure; sustainable forestry; texture; Germany;     Show all 16 Subjects
Abstract:
... Soil compaction is a major concern in the context of ensuring sustainable forest and agricultural management practices. Productivity gains during the last decades were also achieved by increasing mechanization. This change was associated with growing machine weights and impacts on trafficked soils. Up to now, knowledge about the resilience of compaction phenomena is still poor. At 11 forest sites ...
DOI:
10.3390/soilsystems6020049

20. Effects of organic matter characteristics on soil aggregate turnover using rare earth oxides as tracers in a red clay soil

Author:
M. Halder; S. Liu; Z.B. Zhang; Z.C. Guo; X.H. Peng
Source:
Geoderma 2022 v.421 pp. 115908
ISSN:
0016-7061
Subject:
silt,   etc   ; carbon; clay; clay soils; lignin; microaggregates; organic matter; stoichiometry; sugars;     Show all 9 Subjects
Abstract:
... Organic materials input is remarkably essential for soil aggregates formation and breakdown processes. Which characteristics of organic materials control soil aggregate turnover is still largely unknown. Eleven organic materials were characterized in terms of nutrient stoichiometry, biochemical features and carbon (C) functional groups. The effects of organic matter characteristics on soil aggrega ...
DOI:
10.1016/j.geoderma.2022.115908