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1. Temporal instability of soil moisture at a hillslope scale under subtropical hydroclimatic conditions

Author:
Gao, Lei; Peng, Xinhua; Biswas, Asim
Source:
Catena 2020 v.187 pp. 104362
ISSN:
0341-8162
Subject:
soil depth,   etc   ; cropland; data collection; drought; prediction; rain; sand fraction; soil water; storms; topographic slope;     Show all 10 Subjects
Abstract:
... Temporal instability, a condition of soil moisture with unstable spatiotemporal patterns, may occur when the relative roles of the controlling factors change. It impacts the applicability of the temporal stability in the prediction of soil moisture. However, the occurring frequency, degree and underlying hydrological conditions of the temporal instability are far from clear. This study aimed to ex ...
DOI:
10.1016/j.catena.2019.104362

2. Vegetation degradation along water gradient leads to soil active organic carbon loss in Gahai wetland

Author:
Wu, Jiangqi; Ma, Weiwei; Li, Guang; Alhassan, Abdul-Rauf M.; Wang, Haiyan; Chen, Guopeng
Source:
Ecological engineering 2020 v.145 pp. 105666
ISSN:
0925-8574
Subject:
soil depth,   etc   ; dissolved organic carbon; growing season; seasonal variation; soil organic carbon; vegetation; wetland soils; wetlands;     Show all 8 Subjects
Abstract:
... Soil active organic carbon responds quickly to soil disturbances and is a sensitive indicator of early changes in soil organic carbon (SOC). In order to identify the differences in the distribution of dissolved organic carbon (DOC), light fraction organic carbon (LFOC), SOC and their changes as affected by vegetation degradation degree along water gradient in wetland, we analyzed DOC, LFOC, and SO ...
DOI:
10.1016/j.ecoleng.2019.105666

3. Testing the potential of soil moisture observations to estimate rainfall in a soil tank experiment

Author:
Song, Shuang; Brocca, Luca; Wang, Wen; Cui, Wei
Source:
Journal of hydrology 2020 v.581 pp. 124368
ISSN:
0022-1694
Subject:
soil depth,   etc   ; algorithms; loamy sand soils; rain; remote sensing; runoff; satellites; soil water; subsurface flow;     Show all 9 Subjects
Abstract:
... An experimental loamy sand soil tank (12 m long × 1.5 m wide × 1.5 m deep) with a slope of 3° was designed to conduct artificial rainfall–runoff experiments and continuously monitor soil moisture (SM), rainfall, surface runoff (SR) and subsurface runoff (SSR). A total of 28 rainfall-runoff events are analysed to investigate the capability of estimating rainfall from SM observations through SM2RAIN ...
DOI:
10.1016/j.jhydrol.2019.124368

4. Unscented weighted ensemble Kalman filter for soil moisture assimilation

Author:
Fu, Xiaolei; Yu, Zhongbo; Ding, Yongjian; Qin, Yu; Luo, Lifeng; Zhao, Chuancheng; Lü, Haishen; Jiang, Xiaolei; Ju, Qin; Yang, Chuanguo
Source:
Journal of hydrology 2020 v.580 pp. 124352
ISSN:
0022-1694
Subject:
soil depth,   etc   ; equations; models; prediction; soil properties; soil water; uncertainty; China;     Show all 8 Subjects
Abstract:
... A new data assimilation technique, unscented weighted ensemble Kalman filter (UWEnKF) was developed based on the scaled unscented transformation and ensemble Kalman filter (EnKF). In UWEnKF, the individual members selected are unequally weighted and symmetric about the expectation. To investigate the performance of UWEnKF, nine assimilation experiments with different ensemble sizes (161, 1601, 160 ...
DOI:
10.1016/j.jhydrol.2019.124352

5. Enhancement of the methane removal efficiency via aeration for biochar-amended landfill soil cover

Author:
Huang, Dandan; Yang, Luning; Xu, Wenjun; Chen, Qindong; Ko, Jae Hac; Xu, Qiyong
Source:
Environmental pollution 2020 v.263 pp. 114413
ISSN:
0269-7491
Subject:
soil depth,   etc   ; Methylocystis; aeration; bacteria; biochar; biofilters; community structure; landfills; methane; methanotrophs; microbial communities; nitrogen; nutrition; oxidation; oxygen;     Show all 15 Subjects
Abstract:
... Methane (CH₄) mitigation of biocovers or biofilters for landfills is influenced by the bed material and oxygen availability. The improvement of active aeration for the CH₄ oxidation efficiency of biochar-amended landfill soil cover was investigated over a period of 101 days. There were column 1 as the control group, column 2 with biochar amending the soil cover, and column 3 with daily active aera ...
DOI:
10.1016/j.envpol.2020.114413

6. Pedoclimatic zone-based three-dimensional soil organic carbon mapping in China

Author:
Song, Xiao-Dong; Wu, Hua-Yong; Ju, Bing; Liu, Feng; Yang, Fei; Li, De-Cheng; Zhao, Yu-Guo; Yang, Jin-Ling; Zhang, Gan-Lin
Source:
Geoderma 2020 v.363 pp. 114145
ISSN:
0016-7061
Subject:
soil depth,   etc   ; artificial intelligence; data collection; model validation; models; monitoring; prediction; soil map; soil organic carbon; soil quality; topsoil; China;     Show all 12 Subjects
Abstract:
... Up-to-date maps of soil organic carbon (SOC) concentrations can provide vital information for monitoring global or regional soil C changes and soil quality. In this study, a national soil dataset collected in the 2010 s was applied to produce SOC maps of mainland China at soil depths of 0–5 cm, 5–15 cm, 15–30 cm, 30–60 cm, 60–100 cm and 100–200 cm. A stacking ensemble learning framework was utiliz ...
DOI:
10.1016/j.geoderma.2019.114145

7. Total soil organic carbon increases but becomes more labile after afforestation in China’s Loess Plateau

Author:
Zhang, Qingyin; Jia, Xiaoxu; Wei, Xiaorong; Shao, Mingan; Li, Tongchuan; Yu, Qiang
Source:
Forest ecology and management 2020 v.461 pp. 117911
ISSN:
0378-1127
Subject:
soil depth,   etc   ; afforestation; carbon sequestration; cropland; dissolved organic carbon; land use; microbial biomass; mixed forests; soil organic carbon; China;     Show all 10 Subjects
Abstract:
... Afforestation of cropland is recommended as an effective approach to enhance soil organic carbon (SOC) sequestration and labile organic C fractions. However, the stabilization of SOC and its labile organic C fractions on the Loess Plateau is largely unknown. Our objective was to quantify total SOC concentration and labile organic C fractions in the 0–20 cm soil depth for four land use types on the ...
DOI:
10.1016/j.foreco.2020.117911

8. Determination of the surface-mat effect of grassland slopes as a measure for shallow slope stability

Author:
Löbmann, Michael Tobias; Tonin, Rita; Wellstein, Camilla; Zerbe, Stefan
Source:
Catena 2020 v.187 pp. 104397
ISSN:
0341-8162
Subject:
soil depth,   etc   ; bulk density; cohesion; erosion control; grasses; grasslands; plant fibers; roots; soil water; tensile strength; topsoil; Italy;     Show all 12 Subjects
Abstract:
... Herbaceous vegetation is an important factor for control of shallow slope failure. While roots of herbaceous vegetation rarely cross potential shear planes, they increase soil cohesion in the top soil and create a surface-mat effect. The surface-mat is a dense layer of laterally interwoven plant fibers, which create considerable horizontal tensile strength of the top soil. Through redistributing i ...
DOI:
10.1016/j.catena.2019.104397

9. Temporal stability of soil water content on slope during the rainy season in gully regulation watershed

Author:
Ma, Jianye; Han, Jichang; Zhang, Yang; Dong, Qiguang; Lei, Na; Liu, Zhe; Du, Yichun
Source:
Environmental earth sciences 2020 v.79 no.8 pp. 173
ISSN:
1866-6280
Subject:
soil depth,   etc   ; agricultural land; food security; prediction; soil water; soil water content; vegetation; water content; watersheds; wet season; China;     Show all 11 Subjects
Abstract:
... To increase reserve farmland resources, ensure food security, and to improve the ecological environment, large-scale gully regulation projects in Yan'an area of the Loess Plateau have been undertaken in China since 2013. Understanding the spatial and temporal distribution characteristics of slope soil moisture during the rainy season is, therefore, important for vegetation selection used in restor ...
DOI:
10.1007/s12665-020-08921-8

10. Increment-averaged kriging for 3-D modelling and mapping soil properties: Combining machine learning and geostatistical methods

Author:
Orton, T.G.; Pringle, M.J.; Bishop, T.F.A.; Menzies, N.W.; Dang, Y.P.
Source:
Geoderma 2020 v.361 pp. 114094
ISSN:
0016-7061
Subject:
soil depth,   etc   ; algorithms; artificial intelligence; covariance; data collection; geostatistics; kriging; land management; models; prediction; soil properties; soil surveys;     Show all 12 Subjects
Abstract:
... Prediction and mapping of soil properties for different soil depths can provide important information for effective land management. Such predictions and maps are often built based on soil data from multiple soil surveys, and the sampled depths will rarely align with depths for which the predictions and maps are required. A recently proposed approach to deal with such datasets, termed increment-av ...
DOI:
10.1016/j.geoderma.2019.114094

11. Methods of Maintaining Soil Depth Evenness During Disk Tillage

Author:
Zubko, V.; Khvorost, T.; Zamora, O.; Onychko, V.
Source:
Scientia Agriculturae Bohemica 2020 v.51 no.1 pp. 22-30
ISSN:
1805-9430
Subject:
soil depth,   etc   ; agricultural machinery and equipment; angle of incidence; batteries; buckwheat; crops; discing; least squares; manufacturing; wheat; Ukraine;     Show all 11 Subjects
Abstract:
... The article examines agro-technical requirements of machine implements with disk working bodies and is aimed to investigate the existing and alternative methods of depth regulation during soil tillage by the mentioned implements. We defined the machines performance indicators significantly affecting the plant potential release not considered previously. The study results were obtained via the soil ...
DOI:
10.2478/sab-2020-0004

12. Effects of rainfall amount and frequency on soil nitrogen mineralization in Zoigê alpine wetland

Author:
Zhang, Xiao-Ya; Li, Qian-Wei; Gao, Jun-Qin; Hu, Yi-Heng; Song, Ming-Hua; Yue, Yi
Source:
European journal of soil biology 2020 v.97 pp. 103170
ISSN:
1164-5563
Subject:
soil depth,   etc   ; ammonium nitrogen; climate change; drought; ecosystems; field experimentation; mineralization; nitrate nitrogen; nitrogen; nitrogen cycle; rain; wetlands;     Show all 12 Subjects
Abstract:
... Changes in rainfall patterns can affect the soil nitrogen (N) cycles. Most studies have focused on the effect of the amount of rainfall, but the effect of the frequency of rainfall has rarely been considered. In this study, we conducted a field experiment in the Zoigê alpine wetland that examined two levels of the amount of rainfall, i.e. 100% or 70% of the natural amounts of rainfall. In addition ...
DOI:
10.1016/j.ejsobi.2020.103170

13. Soil organic carbon sequestration and its stability after vegetation restoration in the Loess Hilly Region, China

Author:
Xu, Hongwei; Qu, Qing; Wang, Minggang; Li, Peng; Li, Yuanze; Xue, Sha; Liu, Guobin
Source:
Land degradation & development 2020 v.31 no.5 pp. 568-580
ISSN:
1085-3278
Subject:
soil depth,   etc   ; Caragana korshinskii; Hippophae rhamnoides; Robinia pseudoacacia; carbon sequestration; chronosequences; ecological restoration; forests; loess; soil organic carbon; China;     Show all 11 Subjects
Abstract:
... Vegetation restoration is widely recognized as a way to improve soil organic carbon (SOC) stock. However, whether these recovered carbons are stable is yet largely uncertain. Thus, we determined the sequestration and stability of SOC in soils with three different types (Caragana korshinskii (CA) aged for 10, 20, 36, and 47 years, Hippophae rhamnoides (HR) aged for 5, 10, 20, and 30 years, and Robi ...
DOI:
10.1002/ldr.3472

14. Effects of grazing exclusion on soil organic carbon: Hillslope and soil profile results (an Australian example)

Author:
Hancock, G.R.; Vallely, Mitchell
Source:
The Science of the total environment 2020 v.705 pp. 135844
ISSN:
0048-9697
Subject:
soil depth,   etc   ; agricultural management; bedrock; carbon sequestration; cattle; data collection; grazing; landscape management; soil organic carbon; soil profiles; topographic slope;     Show all 11 Subjects
Abstract:
... Soil organic carbon (SOC) is an essential component of the soil-landscape system. It is well recognised that SOC can reduce under some agricultural management practices. In recent years a concerted effort has been undertaken to increase SOC by employing different landscape management practices. Here we compare SOC in a grazing environment to that of an area where cattle have been excluded for over ...
DOI:
10.1016/j.scitotenv.2019.135844

15. Attenuation of rotavirus, MS2 bacteriophage and biomolecule-modified silica nanoparticles in undisturbed silt loam over gravels dosed with onsite wastewater

Author:
Clemens, Hazel; Pang, Liping; Morgan, Leanne K.; Weaver, Louise
Source:
Water research 2020 v.169 pp. 115272
ISSN:
0043-1354
Subject:
soil depth,   etc   ; Rotavirus; bacteriophages; groundwater; nanoparticles; porous media; risk; saturated conditions; silica; silt loam soils; wastewater; wastewater treatment;     Show all 12 Subjects
Abstract:
... Contamination of potable groundwater by pathogenic viruses from on-site wastewater treatment systems (OWTS) poses a serious health risk. This study investigated the attenuation and transport of rotavirus, bacteriophage MS2 and DNA-labelled-glycoprotein-coated silica nanoparticles (DGSnp) in 2 intact cores of silt loam over gravels dosed with wastewater from an OWTS at 3.53 L/day. To simulate a wor ...
DOI:
10.1016/j.watres.2019.115272

16. Evolution of As speciation with depth in a soil profile with a geothermal As origin

Author:
Yang, Puu-Tai; Wu, Wen-Jing; Hashimoto, Yohey; Huang, Jang-Hung; Huang, Shiuh-Tsuen; Hseu, Zeng-Yei; Wang, Shan-Li
Source:
Chemosphere 2020 v.241 pp. 124956
ISSN:
0045-6535
Subject:
soil depth,   etc   ; aluminum; arsenic; barium; elemental composition; ferrihydrite; iron; lead; oxides; risk; soil profiles; soil properties; Taiwan;     Show all 13 Subjects
Abstract:
... High contents of arsenic were detected in soils in Guandu plain, northwest Taiwan. To determine the sources and speciation of As in the soils, the depth profiles of soil properties, elemental composition and As speciation were investigated. The As concentrations in the soil profile ranged from 152 to 1222 mg kg⁻¹, with the highest concentration at the depth of 70–80 cm. The As distribution was fou ...
DOI:
10.1016/j.chemosphere.2019.124956

17. Phosphorus and carbon in soil particle size fractions: A synthesis

Author:
Spohn, Marie
Source:
Biogeochemistry 2020 v.147 no.3 pp. 225-242
ISSN:
0168-2563
Subject:
soil depth,   etc   ; clay; climate; cropland; inorganic phosphorus; land use change; latitude; organic carbon; particle size; sand; silt; temperature; vegetation;     Show all 13 Subjects
Abstract:
... Despite the importance of phosphorus (P) as a macronutrient, the factors controlling the pool sizes of organic and inorganic P (OP and IP) in soils are not yet well understood. Therefore, the aim of this study was to gain insights into the pools sizes of OP, IP and organic carbon (OC) in soils and soil particle size fractions. For this purpose, I analyzed the distribution of OP, IP, and OC among p ...
DOI:
10.1007/s10533-019-00633-x

18. Soil temperature in an open site and below two plantation forest canopies in a tropical highland area, southern Ethiopia

Author:
Alem, Shiferaw; Madera, Petr; Pavlis, Jindrich
Source:
Theoretical and applied climatology 2020 v.139 no.3-4 pp. 907-914
ISSN:
0177-798X
Subject:
soil depth,   etc   ; Grevillea robusta; Juniperus procera; air temperature; analysis of variance; forest canopy; forest plantations; rain; soil temperature; Ethiopia;     Show all 10 Subjects
Abstract:
... This paper examines soil temperature (Tₛ) in two different plantation forests relative to an adjacent open land area in a tropical highland environment. To achieve the objectives, Tₛ in a Juniperus procera (JP) plantation, a Grevillea robusta (GR) plantation, and in the adjacent open land (OL) area were measured. One-way ANOVA and Pearson’s correlation were used for the data analysis. The result i ...
DOI:
10.1007/s00704-019-03031-3

19. Identification of factors influencing hydrologic model performance using a top‐down approach in a large number of U.S. catchments

Author:
Massmann, Carolina
Source:
Hydrological processes 2020 v.34 no.1 pp. 4-20
ISSN:
0885-6087
Subject:
soil depth,   etc   ; base flow; climate; dry environmental conditions; hydrologic models; model validation; parameter uncertainty; snow; soil properties; watersheds; United States;     Show all 11 Subjects
Abstract:
... Investigating the performance that can be achieved with different hydrological models across catchments with varying characteristics is a requirement for identifying an adequate model for any catchment, gauged or ungauged, just based on information about its climate and catchment properties. As parameter uncertainty increases with the number of model parameters, it is important not only to identif ...
DOI:
10.1002/hyp.13566
PubMed:
32001949
PubMed Central:
PMC6973287

20. Soil compaction from cut-to-length thinning operations in young redwood forests in northern California

Author:
Hwang, Kyungrok; Han, Han-Sup; Marshall, Susan E.; Page-Dumroese, Deborah S.
Source:
Canadian journal of forest research 2020 v.50 no.2 pp. 185-192
ISSN:
1208-6037
Subject:
soil depth,   etc   ; Sequoia sempervirens; forests; government agencies; harvesting; hydraulic conductivity; landowners; soil compaction; soil density; soil sampling; wet season; California;     Show all 12 Subjects
Abstract:
... In northern California, United States, a cut-to-length (CTL) system was recently used for the first time to harvest young redwood (Sequoia sempervirens (Lamb. ex D. Don) Endl.) forests. Landowners and public agencies in this region have been concerned about the potential negative impacts of CTL on soils during wet-season harvest operations. To determine soil impacts, we measured changes in soil bu ...
DOI:
10.1139/cjfr-2019-0225