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1. Machine learning approaches for the prediction of soil aggregate stability

Author:
Yassine Bouslihim; Aicha Rochdi; Namira El Amrani Paaza
Source:
Heliyon 2021 v.7 no.3 pp. e06480
ISSN:
2405-8440
Subject:
aggregate stability,   etc   ; data collection; organic matter; prediction; regression analysis; soil aggregates; Morocco;     Show all 7 Subjects
Abstract:
... Currently, many Pedotransfer Functions (PTFs) are being developed to predict certain soil properties worldwide, especially for difficult and time-consuming parameters to measure. However, very few studies have been done to assess the feasibility of using PTFs (regression or machine learning methods) for predicting soil aggregate stability. Also, the Random Forest (RF) method has never been used ...
DOI:
10.1016/j.heliyon.2021.e06480

2. Temperature dependence of volcanic ash soil aggregate stability: Effects of fertilizer application

Author:
Rando Sekiguchi; Hirotaka Saito; Haruo Tanaka; Yuji Kohgo
Source:
Soil & tillage research 2021 v.207 pp. 104870
ISSN:
0167-1987
Subject:
aggregate stability,   etc   ; cattle manure; fertilizer application; polysaccharides; research; soil aggregates; soil temperature; soil water; tillage; volcanic ash soils;     Show all 10 Subjects
Abstract:
... Soil structures and associated physical properties are strongly affected by soil wetness and temperature, especially when physically treated for sterilization. Effect of soil temperature on soil aggregate stability under wet condition is, however, still not well understood. This study aimed to investigate the effect of temperature on aggregate stability of soils treated with chemical fertilizers ...
DOI:
10.1016/j.still.2020.104870

3. Land use conversion and lithology impacts soil aggregate stability in subtropical China

Author:
Liangxia Duan; Hao Sheng; Hong Yuan; Qing Zhou; Zhenwei Li
Source:
Geoderma 2021 v.389 pp. 114953
ISSN:
0016-7061
Subject:
aggregate stability,   etc   ; Ultisols; cropland; erodibility; forests; granite; granite soils; land use change; linear models; lithology; orchards; soil aggregates; soil structure; topographic slope; water erosion; China;     Show all 16 Subjects
Abstract:
... Soil aggregate stability is one of the most important indicators of soil structure and soil degradation vulnerability, and it is the dominant factor controlling hillslope soil erosion in the subtropical Ultisols region of China. However, few studies have investigated the synergistic effects of land use conversion and lithology on soil aggregate stability, especially in subtropical Ultisols region ...
DOI:
10.1016/j.geoderma.2021.114953

4. Comparison of different methods for assessing effects of soil interparticle forces on aggregate stability

Author:
Jingfang Liu; Feinan Hu; Chenyang Xu; Zilong Wang; Rentian Ma; Shiwei Zhao; Gang Liu
Source:
Geoderma 2021 v.385 pp. 114834
ISSN:
0016-7061
Subject:
aggregate stability,   etc   ; organic matter; particle size distribution; rainfall simulation; soil aggregates; splash erosion;     Show all 6 Subjects
Abstract:
... Soil interparticle forces, involving in van der Waalsattractive force, and surface hydration and electrostatic repulsive forces, greatly influence the soil aggregate stability. However, current studies on methods for evaluating the impact of soil interparticle forces in aggregate stability are scarce. This research was aimed to examine the impact of soil interparticle forces on aggregate ...
DOI:
10.1016/j.geoderma.2020.114834

5. A talajok aggregátum-stabilitásának vizsgálati lehetőségei I. Makroaggregátum-stabilitás

Author:
Labancz Viktória; Barna Gyöngyi; Szegi Tamás; Makó András
Source:
Agrokémia és talajtan 2021 v.70 no.1 pp. 87-109
ISSN:
1588-2713
Subject:
aggregate stability,   etc   ; people; soil aggregates;     Show all 3 Subjects
Abstract:
... of which can give a good characterisation of the aggregate stability of soils, but the parallel use of indicators often results in different stability rankings for different soils. An appropriate solution should be defined which method and which indicator expresses what exactly and when, and which indicator and which method should be used for which problem. We intend to continue our research ...
DOI:
10.1556/0088.2021.00092

6. Changes in soil organic carbon and aggregate stability following a chronosequence of Liriodendron chinense plantations

Author:
Qicong Wu; Xianghe Jiang; Qianwen Lu; Jinbiao Li; Jinlin Chen
Source:
Journal of forestry research 2021 v.32 no.1 pp. 355-362
ISSN:
1007-662X
Subject:
aggregate stability,   etc   ; Liriodendron; chronosequences; forestry; research; soil organic carbon;     Show all 6 Subjects
Abstract:
... collected from young, half-mature and mature stages of L. chinense. SOC, readily oxidizable organic carbon, chemically stable organic carbon and aggregate composition were determined. Intermediate stable organic carbon, the microbial quotient and aggregate stability (mean weight diameter) were calculated. SOC and aggregate stability in the L. chinense plantation did not increase linearly with an increase ...
DOI:
10.1007/s11676-020-01110-0

7. Improving aggregate stability and hydraulic properties of Sandy loam soil by applying polyacrylamide polymer

Author:
Ammar A. Albalasmeh; Enas H. Hamdan; Mamoun A. Gharaibeh; Ali El Hanandeh
Source:
Soil & tillage research 2021 v.206 pp. 104821
ISSN:
0167-1987
Subject:
aggregate stability,   etc   ; adsorption; decision support systems; infiltration rate; molecular weight; polyacrylamide; research; sandy loam soils; saturated hydraulic conductivity; soil aggregates; sorption isotherms; sustainable agriculture; tillage;     Show all 13 Subjects
Abstract:
... Improving soil properties, especially in arid and semiarid regions, is an urgent need for sustainable food production. This study aims to evaluate the effect of applying two types of anionic polyacrylamide polymers (PAMs) with different molecular weights on: (1) soil aggregate stability, (2) infiltration rate and (3) saturated hydraulic conductivity of sandy loam soil and introduce a novel ...
DOI:
10.1016/j.still.2020.104821

8. Interacting effects of land use type, microbes and plant traits on soil aggregate stability

Author:
Luis Merino-Martín; Alexia Stokes; Hyun S. Gweon; Lur Moragues-Saitua; Siobhan Staunton; Claude Plassard; Anna Oliver; Yves Le Bissonnais; Robert I. Griffiths
Source:
Soil biology & biochemistry 2021 v.154 pp. 108072
ISSN:
0038-0717
Subject:
aggregate stability,   etc   ; Ascomycota; Basidiomycota; Brachypodium sylvaticum; Urtica dioica; arable soils; community structure; ectomycorrhizae; eutrophication; grasslands; inoculum; laboratory experimentation; land use; loam soils; pastures; rhizosphere; saprotrophs; soil aggregates; soil biology; soil sterilization; soil structure; tap roots; woodlands;     Show all 23 Subjects
Abstract:
... . To address these effects and their feedbacks, we first examined the influence of soil, root and litter characteristics along a land use gradient (ancient woodland, secondary woodland, grassland, pasture and arable land) on microbial community structure (in both bulk and rhizosphere soil), as well as on aggregate stability. Then, we performed an inoculation experiment where we extracted soil columns from ...
DOI:
10.1016/j.soilbio.2020.108072

9. Effect of straw decomposition on organic carbon fractions and aggregate stability in salt marshes

Author:
Chen Wang; Yueyan Pan; Zhenming Zhang; Rong Xiao; Mingxiang Zhang
Source:
Science of the total environment 2021 v.777 pp. 145852
ISSN:
0048-9697
Subject:
aggregate stability,   etc   ; Phragmites australis; environment; estuaries; freshwater; particulate organic carbon; salt marshes; soil aggregates; soil organic carbon; straw; Yellow River;     Show all 11 Subjects
Abstract:
... . The results showed that straw addition mainly enhanced the soil aggregate stability in the 10-year freshwater pumping area, and the organic carbon content of small macro-aggregates increased significantly by 26.36% (P < 0.05). In particular, the content of coarse particulate organic carbon (cPOC) with small macro-aggregates in all areas increased significantly with the addition of straw (P < 0.05 ...
DOI:
10.1016/j.scitotenv.2021.145852

10. Quantifying the contribution of phyllosilicate mineralogy to aggregate stability in the East Asian monsoon region

Author:
Xinliang Wu; Yujie Wei; Chongfa Cai; Zaijian Yuan; Dingqiang Li; Yishan Liao; Yusong Deng
Source:
Geoderma 2021 v.393 pp. 115036
ISSN:
0016-7061
Subject:
aggregate stability,   etc   ; X-ray diffraction; calcium; clay; clay fraction; exchangeable sodium; forests; grasses; illite; land use; monsoon season; porosity; sesquioxides; soil aggregates; soil function; soil organic carbon; soil quality; soil types; texture; tropics; variance; vermiculite;     Show all 22 Subjects
Abstract:
... Aggregate stability strongly influences soil function and has been a key indicator of soil quality and susceptibility to erosion. Although clay mineralogy has been recognized to have substantial effects on aggregate stability, little quantitative information is available on the specific contribution of various phyllosilicates in clay fraction. This study aimed to quantify the individual ...
DOI:
10.1016/j.geoderma.2021.115036

11. Evaluating aggregate stability, surface properties and disintegration behaviour of bauxite residue induced by Ca/Na

Author:
Shengguo Xue; Wenshun Ke; Feng Zhu; Jiarong Fan; Qiongli Wang; Zheng Liu; William Hartley
Source:
Land degradation & development 2021 v.32 no.2 pp. 803-816
ISSN:
1085-3278
Subject:
aggregate stability,   etc   ; aggregation behavior; bauxite; calcium; ecological restoration; electrochemistry; flocculation; land degradation; microaggregates; microstructure; particle size distribution; soil formation; solid wastes;     Show all 13 Subjects
Abstract:
... ⁺) in residue aggregates. Therefore, an integrated method of Le Bissonnais' method, the combined determination method and laser diffraction measurements was applied to evaluate aggregate stability, surface properties and disintegration behaviour of bauxite residue following Ca/Na additions. With increasing Ca²⁺ addition, mean weight diameter increased, indicating improved resistance to dispersion. Ca²⁺ had ...
DOI:
10.1002/ldr.3703

12. Soil organic carbon, aggregate stability and biochemical activity under tilled and no-tilled agroecosystems

Author:
Jemila Chellappa; Kavya Laxmisagara Sagar; Udayakumar Sekaran; Sandeep Kumar; Parmodh Sharma
Source:
Journal of agriculture and food research 2021 v.4 pp. 100139
ISSN:
2666-1543
Subject:
aggregate stability,   etc   ; Glycine max; Zea mays; acid phosphatase; agriculture; agroecosystems; bulk density; conventional tillage; corn; crop production; disturbed soils; energy; food research; no-tillage; soil aggregation; soil erosion; soil organic carbon; total nitrogen;     Show all 18 Subjects
Abstract:
... effects on soil organic carbon (SOC) and total nitrogen (TN) contents, bulk density (ρb), enzymatic activities and aggregate stability under a corn (Zea mays L.)-soybean (Glycine max L.) cropping system. Results support that NT practices improved soil aggregation as compared to the CT and stored higher SOC and TN concentrations in the aggregates, however, NE treatment outperformed both the tillage ...
DOI:
10.1016/j.jafr.2021.100139

13. Evaluation of soil aggregate stability in Algerian northwestern soils using pedotransfer functions and artificial neural networks

Author:
Zineb Hamel; Adda Ababou; Djamel Saidi; Abdeallah Kemassi
Source:
Acta ecologica Sinica 2021 v.41 no.3 pp. 235-242
ISSN:
1872-2032
Subject:
aggregate stability,   etc   ; alluvial plains; erodibility; neural networks; salinity; semiarid zones; soil aggregates; soil degradation;     Show all 8 Subjects
Abstract:
... Since, aggregate stability is the main physical property regulating erodibility; its observations can act as a useful indicator for monitoring and managing soil degradation. In this context, this study carried out in the alluvial plain of Cheliff, a semi-arid area aimed to predict aggregate stability through Mean Weight Diameter (MWD), using pedotransfer functions (PTFs) with different ...
DOI:
10.1016/j.chnaes.2021.04.007

14. Mapping soil aggregate stability using digital soil mapping: A case study of Ruiru reservoir catchment, Kenya

Author:
Ann W. Kamamia; Cordula Vogel; Hosea M. Mwangi; Karl-Heinz Feger; Joseph Sang; Stefan Julich
Source:
Geoderma regional 2021 v.24 pp. e00355
ISSN:
2352-0094
Subject:
aggregate stability,   etc   ; case studies; cropland; organic carbon; prediction; soil aggregates; tea; water erosion; watershed management; watersheds; Kenya;     Show all 11 Subjects
Abstract:
... Water erosion results in sedimentation, which reduces storage capacities in reservoirs and lowers their productive life. To effectively develop strategies for the mitigation of reservoir sedimentation, an assessment of the spatial variation of erosion is necessary. In data-scarce areas, soil erosion proxies such as aggregate stability can be used to map erosion hotspots. To assess the potential ...
DOI:
10.1016/j.geodrs.2020.e00355

15. Effects of neighborhood analysis window forms and derivative algorithms on the soil aggregate stability – Landscape modeling

Author:
Javad Khanifar; Ataallah Khademalrasoul
Source:
Catena 2021 v.198 pp. 105071
ISSN:
0341-8162
Subject:
aggregate stability,   etc   ; algorithms; catenas; digital elevation models; landscapes; regression analysis; soil aggregates; subwatersheds;     Show all 8 Subjects
Abstract:
... One of the most important factors in soil-landscape analysis can be the operational scale applied for mathematical calculations of terrain attributes. This study aimed to investigate the effects of different calculation patterns on terrain attributes and soil aggregate stability-landscape modeling at the subwatershed scale. For this purpose, four terrain attributes (slope gradient, slope aspect ...
DOI:
10.1016/j.catena.2020.105071

16. Hydrological stress regimes regulate effects of binding agents on soil aggregate stability in the riparian zones

Author:
Yiguo Ran; Maohua Ma; Yan Liu; Yue Zhou; Xiaoxiang Sun; Shengjun Wu; Ping Huang
Source:
Catena 2021 v.196 pp. 104815
ISSN:
0341-8162
Subject:
aggregate stability,   etc   ; Anthrosols; Luvisols; Regosols; aluminum; catenas; cation exchange capacity; clay; eroded soils; hydrology; iron; manganese; particulate organic carbon; riparian areas; silicon; silt; soil aggregation; soil erosion; soil organic carbon; soil restoration;     Show all 20 Subjects
Abstract:
... Aggregate stability, playing a key role in resistance to soil erosion, has been greatly impacted by hydrological stresses. Yet, the mechanism of soil aggregate stabilization has been rarely clarified under hydrological stress regimes. In this study, soils across the water-level-fluctuating riparian zone of the Three Gorges Reservoir (TGR) were investigated to identify how the hydrological ...
DOI:
10.1016/j.catena.2020.104815

17. Soil aggregate stability response to hydraulic conditions in water level fluctuation zone of the Three Gorges Reservoir, China

Author:
Gratien Nsabimana; Yuhai Bao; Xiubin He; Jean de Dieu Nambajimana; Ling Yang; Jinlin Li; Ernest Uwiringiyimana; Pascal Nsengumuremyi; Tite Ntacyabukura
Source:
Catena 2021 v.204 pp. 105387
ISSN:
0341-8162
Subject:
aggregate stability,   etc   ; catenas; cation exchange capacity; kinetic energy; rain; soil aggregates; soil quality; water erosion; China;     Show all 9 Subjects
Abstract:
... Soil aggregate stability is a key indicator of soil quality and susceptibility to water erosion. The water level fluctuation zone (WLFZ) of Three Gorges Reservoir (TGR) experiences hydraulic disturbances induced by rainfall, reservoir wave, and water-level fluctuation. Soil aggregate in this region has a unique mechanism of disintegration different from other terrestrial soils. The traditional ...
DOI:
10.1016/j.catena.2021.105387

18. Variations in soil aggregate stability due to land use changes from agricultural land on the Loess Plateau, China

Author:
Guang-yu Zhu; Zhou-ping Shangguan; Lei Deng
Source:
Catena 2021 v.200 pp. 105181
ISSN:
0341-8162
Subject:
aggregate stability,   etc   ; apples; bulk density; catenas; clay; grasslands; land use change; nitrogen; orchards; silt; soil aggregates; soil depth; soil organic carbon; soil pH; soil structure; total nitrogen; watersheds; China;     Show all 18 Subjects
Abstract:
... Soil aggregate stability is a feasible and effective factor to understand the complex interactions between physicochemical properties and soil structure. To reveal the distributions of soil aggregate stability and its influential factors following land use change from apple orchards abandonment and development in the Nangou watershed of the Loess Plateau, China, this study selected five ages ...
DOI:
10.1016/j.catena.2021.105181

19. Associated soil aggregate nutrients and controlling factors on aggregate stability in semiarid grassland under different grazing prohibition timeframes

Author:
Dongdong Liu; Wenliang Ju; Xiaolian Jin; Mengdi Li; Guoting Shen; Chengjiao Duan; Liang Guo; Yanyan Liu; Wei Zhao; Linchuan Fang
Source:
Science of the total environment 2021 v.777 pp. 146104
ISSN:
0048-9697
Subject:
aggregate stability,   etc   ; Fourier transform infrared spectroscopy; environment; grassland management; grasslands; organic carbon; principal component analysis; soil aggregates; stoichiometry; total nitrogen; total phosphorus;     Show all 11 Subjects
Abstract:
... Grazing prohibition is an effective measure in improving soil stability and ecological quality. However, only a limited number of studies have been published on the dominant factors that impact soil aggregate stability and their associated effects on nutrient distribution for different size soil aggregates under long-term grazing prohibition management. In this study, we investigated variation ...
DOI:
10.1016/j.scitotenv.2021.146104

20. Long-term effects of biochar amendment on soil aggregate stability and biological binding agents in brown earth

Author:
Qiang Sun; Jun Meng; Yu Lan; Guohong Shi; Xu Yang; Dianyun Cao; Wenfu Chen; Xiaori Han
Source:
Catena 2021 v.205 pp. 105460
ISSN:
0341-8162
Subject:
aggregate stability,   etc   ; biochar; carbon sequestration; catenas; cation exchange capacity; clay fraction; electrical conductivity; equations; field experimentation; microbial carbon; mineral fertilizers; silt; soil aggregates; soil amendments; soil organic carbon; soil pH; soil structure;     Show all 17 Subjects
Abstract:
... to all treatments every year before sowing. All biochar treatments increased small macroaggregates (0.25–2 mm) and the soil aggregate stability, as reflected by the MWD (mean weight diameter), GMD (geometric mean diameter) and R>₀.₂₅ₘₘ (proportions of macroaggregates). The aggregate stability increased with increasing biochar dose and then decreased in the BC3 treatment. All biochar treatments ...
DOI:
10.1016/j.catena.2021.105460