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

Author:
Viktória, Labancz; Gyöngyi, Barna; Tamás, Szegi; András, Makó
Source:
Agrokémia és talajtan 2021 v.70 no.1 pp. 87-109
ISSN:
1588-2713
Subject:
soil aggregates,   etc   ; aggregate stability; people;     Show all 3 Subjects
Abstract:
... A makroaggregátumok stabilitásának meghatározására számos mérési módszer és értékelési lehetőség létezik. Ezek önállóan eredményesen alkalmazhatók az aggregátumok stabilitásának vizsgálatára (valamilyen romboló hatást megpróbálnak szimulálni, valamilyen körülményt megpróbálnak standardizálni stb.), ám ezek a módszerek egymással nehezen összevethetők. Az évek során jogosan merült fel a szabványosít ...
DOI:
10.1556/0088.2021.00092

2. Assessing the impact of soil aggregate size on mineralization of nitrogen in different soils, China

Author:
Liao, Renkuan; Han, Yuguo; Guo, Zifan
Source:
Catena 2021 v.203 pp. 105358
ISSN:
0341-8162
Subject:
soil aggregates,   etc   ; catenas; mineralization; nitrogen; nitrogen fertilizers; topsoil; China;     Show all 7 Subjects
Abstract:
... Soil aggregates play a critical role to support the development of soil nitrogen (N) pools, but the underlying mechanism by which soil aggregate size impacts N mineralization remains unclear. The objective of this study was to determine the effect of aggregate size in soil N mineralization through cultivation experiments of different type soils. The topsoil samples of ten typical profiles in diffe ...
DOI:
10.1016/j.catena.2021.105358

3. Stable isotopic signatures of carbon and nitrogen in soil aggregates following the conversion of natural forests to managed plantations in eastern China

Author:
Ngaba, Mbezele Junior Yannick; Bol, Roland; Hu, Ya-Lin
Source:
Plant and soil 2021 v.459 no.1-2 pp. 371-385
ISSN:
0032-079X
Subject:
soil aggregates,   etc   ; carbon; forests; land cover; nitrogen; subsoil; topsoil; China;     Show all 8 Subjects
Abstract:
... BACKGROUND AND AIMS: Land cover change (LCC) from natural forest (NF) to plantations (PF) has occurred worldwide over the past several decades. However, the different LCC effects on soil aggregate C and N turnover in various climatic zones remain uncertain. METHODS: Soil samples were taken from both NF and PF at five sites along an approximately 4200 km north-south transect in eastern China. We me ...
DOI:
10.1007/s11104-020-04754-3

4. Responses of aggregates and associated soil available phosphorus, and soil organic matter in different slope aspects, to seasonal freeze–thaw cycles in Northeast China

Author:
Huang, Donghao; Zhou, Lili; Fan, Haoming; Jia, Yanfeng; Liu, Mingbo
Source:
Geoderma 2021 v.402 pp. 115184
ISSN:
0016-7061
Subject:
soil aggregates,   etc   ; freeze-thaw cycles; mountains; phosphorus; soil erosion; soil organic matter; China;     Show all 7 Subjects
Abstract:
... Freeze-thaw is an important factor that affects soil aggregate size and integrity in mid-high latitudes or mountainous regions, which in turn impacts soil erosion. However, there are limited studies on the responses of aggregates and associated soil available phosphorus (AP), as well as soil organic matter (SOM) in different slope aspects to seasonal freeze–thaw cycles (FTCs). In this regard, soil ...
DOI:
10.1016/j.geoderma.2021.115184

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

Author:
Nsabimana, Gratien; Bao, Yuhai; He, Xiubin; Nambajimana, Jean de Dieu; Yang, Ling; Li, Jinlin; Uwiringiyimana, Ernest; Nsengumuremyi, Pascal; Ntacyabukura, Tite
Source:
Catena 2021 v.204 pp. 105387
ISSN:
0341-8162
Subject:
soil aggregates,   etc   ; aggregate stability; catenas; cation exchange capacity; kinetic energy; rain; 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 met ...
DOI:
10.1016/j.catena.2021.105387

6. Coupling of Hofmeister effect, electrolyte concentration, and mechanical composition in soil loss: Runoff simulation study

Author:
Yang, Shishu; Zhang, Yekun; Feng, Bo; Li, Hang
Source:
Soil & tillage research 2021 v.212 pp. 105073
ISSN:
0167-1987
Subject:
soil aggregates,   etc   ; Entisols; cations; particle size; quartz; research; runoff; soil erosion; tillage;     Show all 9 Subjects
Abstract:
... Electrostatic repulsive forces among soil particles control the intensity of soil loss in runoff and are controlled by the coupling of cation surface reactions (e.g., the Hofmeister effect), electrolyte concentration, and soil particle size composition. In this study, we used different concentrations of Li⁺, K⁺, and Cs⁺ to adjust the cation surface reaction or Hofmeister effect and electrolyte con ...
DOI:
10.1016/j.still.2021.105073

7. Data fusion of visible near-infrared and mid-infrared spectroscopy for rapid estimation of soil aggregate stability indices

Author:
Afriyie, Ernest; Verdoodt, Ann; Mouazen, Abdul M.
Source:
Computers and electronics in agriculture 2021 v.187 pp. 106229
ISSN:
0168-1699
Subject:
soil aggregates,   etc   ; Cambisols; Luvisols; aggregate stability; agriculture; data collection; electronics; land management; models; prediction;     Show all 10 Subjects
Abstract:
... Soil aggregate stability (AS) is a crucial soil physical property for sustainable agricultural and environmental land management practices. Yet, its conventional laboratory methods are fastidious and time consuming thereby restricting high-density sampling and large-scale estimation. Therefore, the potential of fusing visible near-infrared (vis-NIR) and mid-infrared (MIR) spectroscopy to enhance t ...
DOI:
10.1016/j.compag.2021.106229

8. Micro-scale resolution of carbon turnover in soil - Insights from laser ablation isotope ratio mass spectrometry on water-glass embedded aggregates

Author:
Vergara Sosa, Manuel; Lehndorff, Eva; Rodionov, Andrei; Gocke, Martina; Sandhage-Hofmann, Alexandra; Amelung, Wulf
Source:
Soil biology & biochemistry 2021 v.159 pp. 108279
ISSN:
0038-0717
Subject:
soil aggregates,   etc   ; ; Miscanthus; biochemistry; carbon; chronosequences; glass; mass spectrometry; silica gel; soil biology; vegetation;     Show all 11 Subjects
Abstract:
... Soil aggregates may stabilize carbon at mineral surfaces and in the interior, but resolving such micro-scale carbon (C) turnover at a scale of soil aggregates <2 mm is challenged by C contaminations during sample preparation such as from resin embedding. Here we introduce a novel C-free embedding method using silica gel for water glass formation, and applied it to soil aggregates from a C3/C4 vege ...
DOI:
10.1016/j.soilbio.2021.108279

9. Evaluation of bentleg and straight narrow point openers in cohesive soil

Author:
Aikins, Kojo Atta; Jensen, Troy A.; Antille, Diogenes L.; Barr, James B.; Ucgul, Mustafa; Desbiolles, Jack M.A.
Source:
Soil & tillage research 2021 v.211 pp. 105004
ISSN:
0167-1987
Subject:
soil aggregates,   etc   ; U.S. Soil Taxonomy; Vertisols; disturbed soils; furrows; research; sandy soils; soil movement;     Show all 8 Subjects
Abstract:
... The bentleg opener was developed to overcome the high soil disturbance caused by straight narrow point openers, with the original evaluation conducted on sandy soils. A bentleg furrow opener was compared to narrow point openers with varying rake angles (45° and 90°) and cutting edge cross-sections (blunt, and single- and double-side chamfers) for soil disturbance, tillage forces, and soil aggregat ...
DOI:
10.1016/j.still.2021.105004

10. Measurement of soil dry aggregate size distribution using the laser diffraction method

Author:
Polakowski, C.; Sochan, A.; Ryżak, M.; Beczek, M.; Mazur, R.; Majewska, K.; Turski, M.; Bieganowski, A.
Source:
Soil & tillage research 2021 v.211 pp. 105023
ISSN:
0167-1987
Subject:
soil aggregates,   etc   ; drying; lasers; measurement; research; sieves; sieving; soil properties; tillage;     Show all 9 Subjects
Abstract:
... Aggregate size distribution of soil is an important parameter to describe soil properties. For many years, the size of soil aggregates has been measured using the dry sieving method. During sieving, particularly less-stable aggregates may have broken down. However, apart from the sieve method, there was no method enabling direct measurement of aggregates on a dry basis. The modification of the mea ...
DOI:
10.1016/j.still.2021.105023

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

Author:
Hamel, Zineb; Ababou, Adda; Saidi, Djamel; Kemassi, Abdeallah
Source:
Acta ecologica Sinica 2021 v.41 no.3 pp. 235-242
ISSN:
1872-2032
Subject:
soil aggregates,   etc   ; aggregate stability; alluvial plains; erodibility; neural networks; salinity; semiarid zones; 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 stratificat ...
DOI:
10.1016/j.chnaes.2021.04.007

12. Soil aggregate loss affected by raindrop impact and runoff under surface hydrologic conditions within contour ridge systems

Author:
An, Juan; Wu, Yuanzhi; Wu, Xiyuan; Wang, Lizhi; Xiao, Peiqing
Source:
Soil & tillage research 2021 v.209 pp. 104937
ISSN:
0167-1987
Subject:
soil aggregates,   etc   ; drainage; erosion control; furrows; raindrop impact; research; runoff; sediment deposition; seepage; soil erosion;     Show all 10 Subjects
Abstract:
... Detachment and transport of particles by raindrop impact and runoff determine the characteristics of soil aggregate loss, which are largely related to surface hydrologic conditions. The water ponding and sediment deposition in furrow areas within contour ridge systems complicate the effects of raindrop impact and runoff on soil aggregate loss responding to surface hydrologic conditions. The object ...
DOI:
10.1016/j.still.2021.104937

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

Author:
Khanifar, Javad; Khademalrasoul, Ataallah
Source:
Catena 2021 v.198 pp. 105071
ISSN:
0341-8162
Subject:
soil aggregates,   etc   ; aggregate stability; algorithms; catenas; digital elevation models; landscapes; regression analysis; 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, p ...
DOI:
10.1016/j.catena.2020.105071

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

Author:
Bouslihim, Yassine; Rochdi, Aicha; El Amrani Paaza, Namira
Source:
Heliyon 2021 v.7 no.3 pp. e06480
ISSN:
2405-8440
Subject:
soil aggregates,   etc   ; aggregate stability; data collection; organic matter; prediction; regression analysis; 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 be ...
DOI:
10.1016/j.heliyon.2021.e06480

15. Effects of shrub encroachment on soil aggregates and organic carbon vary in different grasslands in Inner Mongolia, China

Author:
Zhu, Yankun; Shen, Haihua; Feng, Yinping; Li, He; Akinyemi, Damilare Stephen; Hu, Huifeng; Fang, Jingyun
Source:
Ecosphere 2021 v.12 no.2 pp. e03363
ISSN:
2150-8925
Subject:
soil aggregates,   etc   ; carbon sequestration; grasses; grasslands; shrubs; soil organic carbon; topsoil; China;     Show all 8 Subjects
Abstract:
... Widespread shrub encroachment in grasslands can lead to changes in soil aggregates and soil organic carbon (SOC), especially in deep soils. Soil aggregates physicochemically protect SOC and thus affect soil carbon sequestration. Characterizing the changes in soil aggregates and their organic carbon associated with shrub encroachment is critical for evaluating the ecological consequences of shrub e ...
DOI:
10.1002/ecs2.3363

16. Geochemical fractions of trace metals in surface and core sections of aggregates in agricultural soils

Author:
Sungur, Ali; Kavdir, Yasemin; Özcan, Hasan; İlay, Remzi; Soylak, Mustafa
Source:
Catena 2021 v.197 pp. 104995
ISSN:
0341-8162
Subject:
soil aggregates,   etc   ; agrochemicals; apples; aqua regia; catenas; digestion; fertilizers; orchards; rhizosphere; risk;     Show all 10 Subjects
Abstract:
... Agrochemicals containing trace metals such as pesticides and fertilizer are intensively used in apple production systems in many countries. There is a risk of accumulation of trace metals, particularly in the sensitive root rhizosphere area. In this study, the trace metal concentrations of soils were determined in macroaggregates at the “mm scale” sampled from apple orchards. Soil samples were tak ...
DOI:
10.1016/j.catena.2020.104995

17. Straw management stabilizes the chemical composition of Soil Organic Carbon (SOC): the relationship with aggregate‐associated C in a rice‐rape cropping system

Author:
Kubar, Kashif Ali; Huang, Li; Xue, Bin; Li, Xiaokun; Lu, Jianwei
Source:
Land degradation & development 2021 v.32 no.2 pp. 851-866
ISSN:
1085-3278
Subject:
soil aggregates,   etc   ; agroecosystems; hydrophobicity; land degradation; soil organic carbon; straw; tillage; China;     Show all 8 Subjects
Abstract:
... Soil organic matter stored in soil aggregate fractions is a major soil organic carbon (SOC) stabilization process. The distribution of SOC within soil aggregate fractions and their association with SOC chemical compounds in the agroecosystem is not well understood. Our long‐term study (6 and 9 years) in central China examined the effects of tillage and straw management practices on chemical functi ...
DOI:
10.1002/ldr.3727

18. Metal type and aggregate microenvironment govern the response sequence of speciation transformation of different heavy metals to microplastics in soil

Author:
Yu, Hong; Zhang, Zheng; Zhang, Ying; Fan, Ping; Xi, Beidou; Tan, Wenbing
Source:
The Science of the total environment 2021 v.752 pp. 141956
ISSN:
0048-9697
Subject:
soil aggregates,   etc   ; adsorption; bioavailability; chemical speciation; environment; environmental quality; heavy metals; microplastics; pollution; polyethylene; soil separates;     Show all 11 Subjects
Abstract:
... Microplastics change the physical, chemical, and biological processes in soil, and these changes further affect the transformations of heavy metal speciation in soil. Whether this influence mechanism differs between heavy metals is unknown on the soil aggregates level. In this study, 5 months incubation experiments and soil fractionation were conducted to evaluate the effect of microplastic additi ...
DOI:
10.1016/j.scitotenv.2020.141956

19. Preferential wheat (Triticum aestivum. L cv. Fielder) root growth in different sized aggregates

Author:
Mawodza, Tinashe; Menon, Manoj; Brooks, Harriet; Magdysyuk, Oxana V.; Burca, Genoveva; Casson, Stuart
Source:
Soil & tillage research 2021 v.212 pp. 105054
ISSN:
0167-1987
Subject:
soil aggregates,   etc   ; Triticum aestivum; X-radiation; lateral roots; neutrons; research; root growth; sandy loam soils; seedlings; tillage; tilth; wheat;     Show all 12 Subjects
Abstract:
... Soil structure is one of the most important environmental factors affecting root architectural development and consequently plant yield. Understanding how plant roots respond to soils with variable soil structure is important as it enables soil management practices that promote optimal root growth. Many contemporary, non-invasive experiments investigating how plant root architecture responds to so ...
DOI:
10.1016/j.still.2021.105054

20. A critical review on performance indicators for evaluating soil biota and soil health of biochar-amended soils

Author:
He, Mingjing; Xiong, Xinni; Wang, Lei; Hou, Deyi; Bolan, Nanthi S.; Ok, Yong Sik; Rinklebe, Jörg; Tsang, Daniel C.W.
Source:
Journal of hazardous materials 2021 v.414 pp. 125378
ISSN:
0304-3894
Subject:
soil aggregates,   etc   ; aggregate stability; biochar; cost effectiveness; ecotoxicology; protocols; soil amendments; soil biota; soil organic matter; soil pH; soil quality;     Show all 11 Subjects
Abstract:
... Amendment of soil with biochar has been widely investigated for soil quality improvement in terms of biotic and abiotic functionalities. The performance of biochar-based amendment varies according to the site characteristics, biochar properties, and soil management targets. There is no existing review that summarizes a broad range of performance indicators to evaluate the health of biochar-amended ...
DOI:
10.1016/j.jhazmat.2021.125378