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You searched for: Subject "soil heterogeneity" Remove constraint Subject: "soil heterogeneity"
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1. Optimal geotechnical site investigations for slope reliability assessment considering measurement errors

Author:
Rui Yang; Jinsong Huang; D.V. Griffiths
Source:
Engineering geology 2022 v.297 pp. 106497
ISSN:
0013-7952
Subject:
soil heterogeneity,   etc   ; geology; kriging; mathematical theory; risk; risk reduction;     Show all 6 Subjects
Abstract:
... Site investigation is an important step of geotechnical projects. Previous studies have investigated the benefits of undertaking site investigation for differing scopes by assuming the measurements obtained from site investigation tests are “true” measurements without measurement errors. However, measurement errors are inevitable in all types of site investigation testing methods which cannot be n ...
DOI:
10.1016/j.enggeo.2021.106497

2. Fine-scale heterogeneous structure impact on the scale-dependency of the effective hydro-electrical relations of unsaturated soils

Author:
Ziv Moreno
Source:
Advances in water resources 2022 v.162 pp. 104156
ISSN:
0309-1708
Subject:
soil heterogeneity,   etc   ; Bayesian theory; electrical conductivity; geostatistics; permeability; vadose zone; water;     Show all 7 Subjects
Abstract:
... Non-invasive geo-electrical tools are widely used to monitor vadose zone processes. At the core of these methods is the assumption that the obtained subsurface’s electrical conductivity maps can be translated to hydrological state-variables via site-specific hydro-electrical relations calibrated with laboratory or field data. However, the common practice that assumes spatially homogeneous hydro-el ...
DOI:
10.1016/j.advwatres.2022.104156

3. Identifying determinants of spatio-temporal disparities in soil moisture of the Northern Hemisphere using a geographically optimal zones-based heterogeneity model

Author:
Peng Luo; Yongze Song; Xin Huang; Hongliang Ma; Jin Liu; Yao Yao; Liqiu Meng
Source:
ISPRS journal of photogrammetry and remote sensing 2022 v.185 pp. 111-128
ISSN:
0924-2716
Subject:
soil heterogeneity,   etc   ; Internet; models; photogrammetry; remote sensing; soil water; spatial variation;     Show all 7 Subjects
Abstract:
... Soil moisture is a fundamental ecological component for climate and hydrological studies. However, the distribution patterns of soil moisture are spatially heterogenous and influenced by multiple environmental factors. The knowledge is still limited in assessing the large-scale spatial heterogeneity of soil moisture in in situ data modelling, in situ network design, spatial down-scaling, and remot ...
DOI:
10.1016/j.isprsjprs.2022.01.009

4. Kinetic modeling of As release from contaminated soils: Consideration of particle size and co-contamination of Cu

Author:
Shaohui Wang; Rong Li; Xiaofeng Lin; Yijin Lv; Qianting Ye; Zhenqing Shi
Source:
Chemosphere 2022 v.301 pp. 134675
ISSN:
0045-6535
Subject:
soil heterogeneity,   etc   ; adsorbents; cations; goethite; models; pH; particle size; prediction; soil organic matter;     Show all 9 Subjects
Abstract:
... Prediction on the release kinetics of metalloids from soils is challenging due to the physio-chemical heterogeneity of soil and the varying binding abilities of metalloid contaminants on soil. In this study, the kinetics of As(V), together with Cu(II), release from two typical field contaminated soils were investigated by the stirred-flow experiments. We formulated the quantitative models to descr ...
DOI:
10.1016/j.chemosphere.2022.134675

5. How Did Soil Depth and Sampling Time Influence on Soil Organic Carbon, Soil Nitrogen, and Soil Biological Properties in a Mediterranean Olive Grove?

Author:
Burak Koçak; Cengiz Darıcı
Source:
Communications in soil science and plant analysis 2022 v.53 no.1 pp. 30-44
ISSN:
1532-2416
Subject:
soil heterogeneity,   etc   ; mineralization; nitrogen; olives; plant analysis; soil depth; soil organic carbon; total nitrogen;     Show all 8 Subjects
Abstract:
... The objective of this study was to determine the effects of sampling time and depth on some soil properties in a natural olive grove. Soil samples were collected at 0–10 cm (S0) and 10–20 cm (S1) depths in February, May, August, and November between 2013 and 2015 in Cukurova University Campus, Adana, Turkey. The soil properties determined were soil organic carbon (SOC), total nitrogen (TN), C/N, s ...
DOI:
10.1080/00103624.2021.1971697

6. Effects of intra-vineyard variability and soil heterogeneity on vine performance, dry matter and nutrient partitioning

Author:
Matteo Gatti; Alessandra Garavani; Cecilia Squeri; Irene Diti; Antea De Monte; Carla Scotti; Stefano Poni
Source:
Precision agriculture 2022 v.23 no.1 pp. 150-177
ISSN:
1385-2256
Subject:
soil heterogeneity,   etc   ; canopy; clay fraction; precision agriculture; sand fraction; soil depth; vegetative growth; vigor; vines; vineyards;     Show all 10 Subjects
Abstract:
... Three vigor zones, identified in a Barbera vineyard by remote sensing at full canopy, were carefully ground-truthed to determine, over 2 years, the relative weight of soil factors in affecting within-field variability, and to investigate vigor zone influence on dry matter (DM) and nutrient partitioning into different vine organs. Regardless of season, high vigor (HV) achieved stronger vine capacit ...
DOI:
10.1007/s11119-021-09831-w

7. Soil texture prediction through stratification of a regional soil spectral library

Author:
José Janderson Ferreira COSTA; Élvio GIASSON; Elisângela Benedet DA SILVA; Tales TIECHER; Antonny Francisco Sampaio DE SENA; Ryshardson Geovane Pereira de Oliveira E SILVA
Source:
Pedosphere 2022 v.32 no.2 pp. 294-306
ISSN:
1002-0160
Subject:
soil heterogeneity,   etc   ; algorithms; clay; color; colorimetry; models; prediction; reflectance; sand; silt; soil texture; spectroradiometers; spectroscopy; Brazil;     Show all 14 Subjects
Abstract:
... Knowing the spatial distribution of soil texture, which is a physical property, is essential to support agricultural and environmental decision making. Soil texture can be estimated using visible, near infrared, and shortwave infrared (Vis-NIR-SWIR) spectroscopy. However, the performance of spectroscopic models is variable because of soil heterogeneity. Currently, few studies address the effects o ...
DOI:
10.1016/S1002-0160(21)60074-7

8. Simulating root distribution of plant individual with a three-dimensional model

Author:
Zhixia Ying; Yongjie Liu; Chen Shi; Zhichun Lan; Huan Zhang; Yizhen Liu; Gang Ge
Source:
Ecological modelling 2021 v.455 pp. 109649
ISSN:
0304-3800
Subject:
soil heterogeneity,   etc   ; habitats; models; plasticity; roots;     Show all 5 Subjects
Abstract:
... Soil resources distribute heterogeneously in natural ecosystems, which is known as soil heterogeneity. Responses of plant roots to soil heterogeneity are important for their adaptation to the changes of environments. However, few observations of root systems in soil are recorded, and there is a lack of comprehensive theory for roots responses to soil heterogeneity.Soil heterogeneity including conf ...
DOI:
10.1016/j.ecolmodel.2021.109649

9. The Relationship Between Soil Heterogeneity and Cellulolytic Activity

Author:
Galina Zadorozhnaya; Katerina Andrusevych
Source:
Ekológia (Bratislava) 2021 v.40 no.1 pp. 1-7
ISSN:
1337-947X
Subject:
soil heterogeneity,   etc   ; Chernozems; geostatistics; soil penetration resistance;     Show all 4 Subjects
Abstract:
... This article examines the relationship between soil heterogeneity and cellulolytic activity. The investigated substrate was a typical chernozem (black soil). Cellulolytic activity was studied by the application method across a regular grid of 7×15 points (21×45 m). The distance between the measurement points was 3 m. Soil heterogeneity determined by the measurement of soil penetration resistance u ...
DOI:
10.2478/eko-2021-0001

10. Measuring heterogeneity in soil networks: a network analysis and simulation-based approach

Author:
Natalie Davis; J. Gareth Polhill; M.J. Aitkenhead
Source:
Ecological modelling 2021 v.439 pp. 109308
ISSN:
0304-3800
Subject:
soil heterogeneity,   etc   ; biodiversity; ecosystems; geography; soil pore system;     Show all 5 Subjects
Abstract:
... Quantifying soil structural and ecological heterogeneity is crucial for understanding their interactions and their relationships to the resilience and health of the wider ecosystem. However, a clear understanding of how structural heterogeneity affects soil biodiversity is still emerging. Previous work has primarily used expensive, often laboratory-based methods to quantify soil pore network struc ...
DOI:
10.1016/j.ecolmodel.2020.109308

11. Incorporating the Effects of Complex Soil Layering and Thickness Local Variability into Distributed Landslide Susceptibility Assessments

Author:
Francesco Fusco; Benjamin B. Mirus; Rex L. Baum; Domenico Calcaterra; Pantaleone De Vita
Source:
Water 2021 v.13 no.5 pp. -
ISSN:
2073-4441
Subject:
soil heterogeneity,   etc   ; carbonates; landslides; rain; soil depth; urbanization; water; Italy;     Show all 8 Subjects
Abstract:
... Incorporating the influence of soil layering and local variability into the parameterizations of physics-based numerical models for distributed landslide susceptibility assessments remains a challenge. Typical applications employ substantial simplifications including homogeneous soil units and soil-hydraulic properties assigned based only on average textural classifications; the potential impact o ...
DOI:
10.3390/w13050713

12. Effects of spatial variations in rock fragments related to tillage on hydrological processes and sediment transport

Author:
Jiadong Dai; Jianhui Zhang; Ke Xue; Feng Yang; Fucheng Huang; Hu Zhao; Xiaoyun Ma; Changjiang Dai; Yuanmao Xu; Mingtao Li; Haichao Xu
Source:
Catena 2022 v.211 pp. 105963
ISSN:
0341-8162
Subject:
soil heterogeneity,   etc   ; catenas; overland flow; preferential flow; rain; rain intensity; runoff; sediment transport; soil water; spatial variation; subsurface flow; tillage; tillage erosion; topographic slope;     Show all 14 Subjects
Abstract:
... Cultivation activities play an important role in shaping the spatial distribution of rock fragments in hilly agricultural landscapes. The spatial variation in rock fragment contents (SVRFC) can exert strong effects on the spatial heterogeneity of soil properties with great implications for hydrological fluxes and soil erosion. However, previous research always assumed that rock fragments were homo ...
DOI:
10.1016/j.catena.2021.105963

13. Desorption kinetics of heavy metals in the gleyic layer of permafrost-affected soils in Arctic region assessed by geochemical fractionation and DGT/DIFS

Author:
Xiaowen Ji; Yu Cheng; Evgeny Abakumov; Hao Zhang; Chao Han; Rong Tang; Daishe Wu; Xianchuan Xie
Source:
Catena 2021 v.206 pp. 105539
ISSN:
0341-8162
Subject:
soil heterogeneity,   etc   ; catenas; desorption; fractionation; landscapes; pH; soil texture; Arctic region;     Show all 8 Subjects
Abstract:
... An in-situ DGT (diffusive gradient in thin films) technique was deployed to gleyic-layer soils identified in the active layer of eight Arctic islands for the release-resupply processes of labile Cd, Zn, and Pb during the thawing season. The capability to maintain the initial soil concentration of these metals is highly dependent upon landscape elevation and soil texture, which determines the labil ...
DOI:
10.1016/j.catena.2021.105539

14. Multivariate geospatial analysis for predicting soil variability along a toposequence of a watershed in the humid tropics

Author:
Sunshine A. De Caires; Mark N. Wuddivira; Chaney St Martin; Ronald Roopnarine; Aldaine Gordon; Bernie J. Zebarth
Source:
Catena 2022 v.210 pp. 105919
ISSN:
0341-8162
Subject:
soil heterogeneity,   etc   ; bedrock; catenas; clay fraction; cultivation area; electrical conductivity; forests; geostatistics; grasslands; land use; landforms; savannas; soil depth; soil pH; subwatersheds; texture; Trinidad and Tobago;     Show all 17 Subjects
Abstract:
... Spatiotemporal patterns of edaphic properties can be useful in modeling underlying mechanisms and controls of watershed processes, however, few studies have quantified the spatial variability of soils in watersheds in the humid tropics. A multivariate geostatistical approach was used to examine the relationships between soil apparent electrical conductivity (ECa) and measured soil and landform par ...
DOI:
10.1016/j.catena.2021.105919

15. Embracing variability in soils on smallholder farms: New tools and better science

Author:
Sieglinde Snapp
Source:
Agricultural systems 2022 v.195 pp. 103310
ISSN:
0308-521X
Subject:
soil heterogeneity,   etc   ; citizen science; farmers; nutrient management; precision agriculture; soil organic carbon;     Show all 6 Subjects
Abstract:
... A major challenge on smallholder farms is the tremendous heterogeneity of soil properties. This is at the same time an opportunity, as it is now feasible - at fine resolution - to quantify variability of soil organic carbon and other properties on farmer fields. This can provide unique insights for moving beyond conventional agriculture, which has largely relied on the use of large doses of inputs ...
DOI:
10.1016/j.agsy.2021.103310

16. Soil heterogeneity within a vineyard impacts the beta but not the alpha microbial agro-diversity

Author:
Marco Signorini; L. Borruso; K.C. Randall; A.J. Dumbrell; Y. Pii; T. Mimmo; Stefano Cesco
Source:
Applied soil ecology 2021 v.166 pp. 104088
ISSN:
0929-1393
Subject:
soil heterogeneity,   etc   ; Vitis; fungi; genes; soil ecology; soil microorganisms; species diversity; vineyards;     Show all 8 Subjects
Abstract:
... Here we investigate the effect of agricultural integrated management on soil microbial diversity within a vineyard with a history (20 years) of exposure to frequent applications of fertilizers and pesticides each season. Considering that these practices were mainly directed to the target plant (i.e. grapevine) and its surrounding area, we expected that these practices have influenced the soil alph ...
DOI:
10.1016/j.apsoil.2021.104088

17. Grazing effects on shrub-induced resource islands and herbaceous vegetation heterogeneity in sagebrush-steppe communities

Author:
Kirk W. Davies; Stella M. Copeland; Jon D. Bates
Source:
Global ecology and conservation 2022 v.35 pp. e02106
ISSN:
2351-9894
Subject:
soil heterogeneity,   etc   ; Artemisia; Oregon; canopy; cattle; nutrient availability; soil nutrients; spatial variation; steppes;     Show all 9 Subjects
Abstract:
... Spatial heterogeneity in plant communities promotes coexistence and diversity by providing a variety of niches for different species. In shrub-steppe communities, shrubs create distinct microsites under their canopies (canopy microsites) compared to areas between their canopies (interspace microsites). This creates spatial heterogeneity in soil nutrient availability and herbaceous vegetation. Graz ...
DOI:
10.1016/j.gecco.2022.e02106

18. Concentration and variability of soil trace elements in an agricultural area in a semiarid region of the Irecê Plateau, Bahia, Brazil

Author:
A.L. do Nascimento Júnior; L. da S. Souza; A. de Q. Paiva; L.D. Souza; L.F. Souza-Filho; E.I. Fernandes Filho; C.E.G.R. Schaefer; J.A.G. Santos; M.R. Bomfim; E.F. da Silva; A.C.O. Fernandes; F.A. da S. Xavier
Source:
Geoderma regional 2021 v.24 pp. e00351
ISSN:
2352-0094
Subject:
soil heterogeneity,   etc   ; United States Environmental Protection Agency; environmental law; risk; semiarid zones; Brazil;     Show all 6 Subjects
Abstract:
... In a previous study, a high concentration of Pb, Zn, Cr, and Mn in soil profiles located in the semiarid region of Brazil were found in areas used for decades by small family farmers for the production of the crops and raising small animals. This question motivated the current study to evaluate the soil variability spatial dependence on trace elements to quantify and map its occurrence in this are ...
DOI:
10.1016/j.geodrs.2020.e00351

19. Contrasting effects of straw and biochar on microscale heterogeneity of soil O2 and pH: Implication for N2O emissions

Author:
Kun Zhu; Xin Ye; Hongyu Ran; Peixuan Zhang; Gang Wang
Source:
Soil biology & biochemistry 2022 v.166 pp. 108564
ISSN:
0038-0717
Subject:
soil heterogeneity,   etc   ; biochar; biodegradation; denitrification; labile carbon; nitrification; oxidoreductases; porosity; soil pH; straw;     Show all 10 Subjects
Abstract:
... Little is known about the microscale heterogeneity of O₂ and pH in the interfaces between soil and amendments. In this study, planar optodes were applied to continuously measure the micro-scale O₂ and pH dynamics in soil amended with a patch of straw and its biochar. The recalcitrant biochar with high porosity had stronger capability to maintain the oxic zone around the patch area. Mainly through ...
DOI:
10.1016/j.soilbio.2022.108564

20. Differentiated impacts of the feeding-habits of three ant species on carbon mineralization in tropical forest soils

Author:
Qianbin Cao; Shaojun Wang; Yulian Ren; Qianqian Zuo; Ping Wang; Shuang Zhao; Bo Yang
Source:
European journal of soil biology 2022 v.110 pp. 103403
ISSN:
1164-5563
Subject:
soil heterogeneity,   etc   ; Odontoponera transversa; Pheidole; Pheidologeton affinis; ammonium; detritivores; honeydew; microbial carbon; mineralization; nests; nitrogen; nutrient availability; soil nutrients; soil organic carbon; total organic carbon; tropical forests; China;     Show all 17 Subjects
Abstract:
... Ants affect carbon mineralization probably through their modifications on spatiotemporal heterogeneity in soil nutrients. However, it is still unclear whether the impacts of belowground-nesting ants on carbon mineralization varied with species. For this study, three belowground-nesting ants (i.e., honeydew harvester Pheidole capellini, predatory Odontoponera transversa, and saprophagous Pheidologe ...
DOI:
10.1016/j.ejsobi.2022.103403