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1. Analysis of compaction parameters of the exemplary non-cohesive soil determined by Proctor methods and vibrating table tests

Author:
Sulewska, Maria J.; Tymosiak, Dariusz
Source:
Annals of Warsaw University of Life Sciences, SGGW 2018 v.50 no.2 pp. 99-108
ISSN:
2081-9617
Subject:
soil water content,   etc   ; compliance; sand;     Show all 3 Subjects
Abstract:
... The purpose of the work is to analyze compaction parameters of non-cohesive uniformly graded soil – optimum moisture content (wₒₚₜ) and maximum dry density (ρdₘₐₓ), obtained from Proctor tests and using vibrating table. The research was conducted on even-graded medium sand (Safgr), of uniformity coefficient CU = 3.10 and coefficient of curvature CC = 0.99. Compaction parameters were examined by us ...
DOI:
10.2478/sggw-2018-0008

2. Design of water reuse storage facilities in Sustainable Urban Drainage Systems from a volumetric water balance perspective

Author:
Zubelzu, S.; Rodríguez-Sinobas, L.; Andrés-Domenech, I.; Castillo-Rodríguez, J.T.; Perales-Momparler, S.
Source:
The Science of the total environment 2019 v.663 pp. 133-143
ISSN:
0048-9697
Subject:
soil water content,   etc   ; drainage systems; evapotranspiration; irrigation; seepage; soil water; stormwater; water reuse; watersheds;     Show all 9 Subjects
Abstract:
... This paper presents a methodology for designing water reuse storage facilities as part of Sustainable Urban Drainage Systems (SUDS) in urban catchments. The method analyzes the whole water balance of the catchment. The contributions to the balance are irrigation and precipitation; the outlets are evapotranspiration, seepage and discharge to the conventional sewage system. The internal system varia ...
DOI:
10.1016/j.scitotenv.2019.01.342

3. Diffusivity and sorptivity determination at different soil water contents from horizontal infiltration

Author:
Villarreal, Rafael; Lozano, Luis A.; Melani, Esteban M.; Salazar, María Paz; Otero, María Florencia; Soracco, C. Germán
Source:
Geoderma 2019 v.338 pp. 88-96
ISSN:
0016-7061
Subject:
soil water content,   etc   ; diffusivity; hydraulic conductivity; sandy loam soils; silt loam soils; soil water; Pampas region;     Show all 7 Subjects
Abstract:
... Determination of soil hydraulic properties under non-saturated conditions is crucial in order to describe soil water dynamics in the field. The objectives of this work were: i- to determine soil water diffusivity (D) as a function of soil moisture with a simple lab set-up, based on Whisler et al. (1968) methodology, from soil moisture profiles obtained using capacitive sensors in three contrasting ...
DOI:
10.1016/j.geoderma.2018.11.045

4. Estimating wheat biomass from GF-3 data and a polarized water cloud model

Author:
Han, Dong; Yang, Hao; Qiu, Chunxia; Yang, Guijun; Chen, Erxue; Du, Ying; Yang, Wenpan; Zhou, Chengquan
Source:
Remote sensing letters 2019 v.10 no.3 pp. 234-243
ISSN:
2150-7058
Subject:
soil water content,   etc   ; aboveground biomass; models; monitoring; remote sensing; soil water; synthetic aperture radar; wheat;     Show all 8 Subjects
Abstract:
... Wheat is one of the staple crops of the world. With the wide application of remote-sensing methods in agriculture, the use of data from synthetic aperture radar has attracted increasing attention for monitoring wheat growth. Most of previous studies estimated wheat biomass based on a water cloud model (WCM). However, when no data are available on soil moisture content, the applicability of such mo ...
DOI:
10.1080/2150704X.2018.1542184

5. Development of a spatially-varying Statistical Soil Moisture Profile model by coupling memory and forcing using hydrologic soil groups

Author:
Pal, Manali; Maity, Rajib
Source:
Journal of hydrology 2019 v.570 pp. 141-155
ISSN:
0022-1694
Subject:
soil water content,   etc   ; databases; hydrometeorology; memory; models; satellites; soil surveys; soil water;     Show all 8 Subjects
Abstract:
... Information on vertical Soil Moisture Content (SMC) profile is important for several hydro-meteorological processes. This study borrows the idea of coupling the memory and forcing from a previous study and develops a spatially-varying Statistical Soil Moisture Profile (SSMP) model to estimate the vertical SMC profile. It uses only surface soil moisture (0–5 cm) values and Hydrological Soil Groups ...
DOI:
10.1016/j.jhydrol.2018.12.042

6. Effects of nitrate and water content on acetylene inhibition technique bias when analysing soil denitrification rates under an aerobic atmosphere

Author:
Yuan, Haijing; Zhang, Zhijun; Qin, Shuping; Zhou, Shungui; Hu, Chunsheng; Clough, Tim; Wrage-Mönnig, Nicole; Luo, Jiafa; Conrad, Ralf
Source:
Geoderma 2019 v.334 pp. 33-36
ISSN:
0016-7061
Subject:
soil water content,   etc   ; denitrification; nitrates; nitric oxide; nitrous oxide; oxidation; soil water; water content;     Show all 8 Subjects
Abstract:
... The acetylene inhibition technique (AIT) is the most widely used indirect method of determining denitrification fluxes. Although AIT bias has long been recognised, the contributions of soil denitrification-related parameters to this bias have not yet been well quantified. Using a direct-N2 method as a baseline, we determined the composition of AIT bias and quantified the effects of soil nitrate (N ...
DOI:
10.1016/j.geoderma.2018.07.039

7. Measurement of soil water content using ground-penetrating radar: a review of current methods

Author:
Liu, Xinbo; Chen, Jin; Cui, Xihong; Liu, Qixin; Cao, Xin; Chen, Xuehong
Source:
International journal of digital earth 2019 v.12 no.1 pp. 95-118
ISSN:
1753-8955
Subject:
soil water content,   etc   ; data collection; ecology; engineering; geophysics; ground-penetrating radar; information processing; monitoring; soil water;     Show all 9 Subjects
Abstract:
... Soil water content (SWC) is a crucial parameter in ecology, agriculture, hydrology, and engineering studies. Research on non-invasive monitoring of SWC has been a long-lasting topic in these fields. Ground penetrating radar (GPR), a non-destructive geophysical technique, has the advantages of high resolution, deep detection depth, and high efficiency in SWC measurements at medium scale. It has bee ...
DOI:
10.1080/17538947.2017.1412520

8. Suitable exclosure duration for the restoration of degraded alpine grasslands on the Qinghai-Tibetan Plateau

Author:
Cao, Jianjun; Li, Guangdong; Adamowski, Jan F.; Holden, Nicholas M.; Deo, Ravinesh C.; Hu, Zeyong; Zhu, Guofeng; Xu, Xueyun; Feng, Qi
Source:
Land use policy 2019 v.86 pp. 261-267
ISSN:
0264-8377
Subject:
soil water content,   etc   ; aboveground biomass; alpine grasslands; control methods; dominant species; grazing; soil depth; soil water; China;     Show all 9 Subjects
Abstract:
... Exclosures erected to prevent grazing have been widely adopted as a measure for the recovery of degraded grasslands. Many studies have explored the effects of exclosure use on vegetation and soil; these studies, however, were carried out over relatively short-time periods. Given the length of time required for a grassland to fully develop, short-term studies result in a limited understanding of ex ...
DOI:
10.1016/j.landusepol.2019.05.008

9. Application of ground penetrating radar methods in soil studies: A review

Author:
Zajícová, Katerina; Chuman, Tomas
Source:
Geoderma 2019 v.343 pp. 116-129
ISSN:
0016-7061
Subject:
soil water content,   etc   ; ground-penetrating radar; mathematical models; organic horizons; peat; roots; soil surveys; soil water; stratigraphy; trees;     Show all 10 Subjects
Abstract:
... Applications of ground penetrating radar (GPR) in soil surveys promise cost and time benefits together with the possibility of repeating surveys at the same locations due to the method's non-destructiveness to the ground surface. After its successful application to earth sciences surveying of the deep subsurface, GPR was used in soil surveys; however, its application in soil surveys has been diffi ...
DOI:
10.1016/j.geoderma.2019.02.024

10. The impact of wetting intensity on soil CO2 emissions from a coastal grassland ecosystem

Author:
Gebremichael, Amanuel; Orr, Patrick J.; Osborne, Bruce
Source:
Geoderma 2019 v.343 pp. 86-96
ISSN:
0016-7061
Subject:
soil water content,   etc   ; autumn; carbon dioxide; drying; ecosystems; grasslands; greenhouse gas emissions; rain; rainfall simulation; soil water; summer;     Show all 11 Subjects
Abstract:
... Rainfall events can stimulate carbon dioxide (CO2) emissions (i.e. the Birch Effect). However, the contribution of wetting-induced CO2 emissions to annual C emissions remains largely unquantified, as does the impact of different rainfall amounts/wetting intensities, particularly at the field scale. In this study, the short-term impact of simulated rainfall amounts (equivalent to 1, 2, 5, 10, 15, 2 ...
DOI:
10.1016/j.geoderma.2019.02.016

11. Estimating soil moisture content using laboratory spectral data

Author:
Yang, Xiguang; Yu, Ying; Li, Mingze
Source:
Journal of forestry research 2019 v.30 no.3 pp. 1073-1080
ISSN:
1007-662X
Subject:
soil water content,   etc   ; absorption; ecosystems; forestry; models; monitoring; normal distribution; regression analysis; remote sensing; soil water; spatial data; spectral analysis;     Show all 12 Subjects
Abstract:
... Monitoring soil moisture is important for agriculture and forestry and plays an essential role in land surface processes as well as providing feedback among the earth’s surface ecosystems. Large-scale regional soil moisture spatial data can be obtained with a reliable and operational approach using remote sensing. In this paper, we provide an operational framework for retrieving soil moisture usin ...
DOI:
10.1007/s11676-018-0633-6

12. Spatial variability of short-term effect of tillage on soil penetration resistance

Author:
Alesso, Carlos Agustín; Masola, María Josefina; Carrizo, María Eugenia; Cipriotti, Pablo Ariel; Imhoff, Silvia del
Source:
Archiv für Acker- und Pflanzenbau und Bodenkunde 2019 v.65 no.6 pp. 822-832
ISSN:
1476-3567
Subject:
soil water content,   etc   ; Argiudolls; chiseling; cluster analysis; models; no-tillage; soil compaction; soil penetration resistance; soil water;     Show all 9 Subjects
Abstract:
... The effect of tillage on soil properties varies within field due to spatial variability of soils. Mapping changes of soil penetration resistance (PR) would be useful to understand and assess tillage practices to alleviate soil compaction. The objectives were to model the short-term effect of tillage on PR and its spatial structure, and to delineate homogeneous zones based on soil response in a Typ ...
DOI:
10.1080/03650340.2018.1532076

13. Soil water content measurement using hyper-spectral remote sensing techniques – A case study from north-western part of Tamil Nadu, India

Author:
Divya, Y.; Gopinathan, P.
Source:
Remote sensing applications 2019 v.14 pp. 1-7
ISSN:
2352-9385
Subject:
soil water content,   etc   ; absorption; case studies; radiometry; reflectance; regression analysis; remote sensing; soil sampling; soil water; water content; India;     Show all 11 Subjects
Abstract:
... This study examines the hyperspectral signatures (in the visible near-infrared (VNIR)–shortwave infrared (SWIR) regions of different samples of soils possessing varying water content. Totally 82 soil samples with differing water contents were examined using a hyperspectral radiometer operating in the 350–2,500-nm range, and the spectral curves were obtained. Statistical analyses (linear regression ...
DOI:
10.1016/j.rsase.2019.01.005

14. Non-invasive estimation of root zone soil moisture from coarse root reflections in ground-penetrating radar images

Author:
Liu, Xinbo; Cui, Xihong; Guo, Li; Chen, Jin; Li, Wentao; Yang, Dedi; Cao, Xin; Chen, Xuehong; Liu, Qixin; Lin, Henry
Source:
Plant and soil 2019 v.436 no.1-2 pp. 623-639
ISSN:
0032-079X
Subject:
soil water content,   etc   ; algorithms; computer simulation; field experimentation; ground-penetrating radar; rhizosphere; roots; shrublands; soil profiles; soil water;     Show all 10 Subjects
Abstract:
... BACKGROUND AND AIMS: Root zone soil moisture is an important component in water cycling through the soil-plant-atmosphere continuum. However, its measurement in the field remains a challenge, especially non-invasively and repeatedly. Here, we developed a new method that uses ground-penetrating radar (GPR) to quantify root zone soil moisture. METHODS: Coarse roots were chosen as reflectors to colle ...
DOI:
10.1007/s11104-018-03919-5

15. Changes in spider diversity and community structure along abandonment and vegetation succession in rice paddy ecosystems

Author:
Baba, Yuki G.; Tanaka, Koichi; Kusumoto, Yoshinobu
Source:
Ecological engineering 2019 v.127 pp. 235-244
ISSN:
0925-8574
Subject:
soil water content,   etc   ; Araneae; arthropod communities; community structure; ecological succession; ecosystems; ordination techniques; paddies; soil water; species richness; vegetation; Japan;     Show all 12 Subjects
Abstract:
... Field abandonment is a new threat to the biodiversity of agricultural land, but its impacts on arthropod communities remain unclear. We investigated how field abandonment influences spider abundance and diversity in rice paddy ecosystems. We collected spiders in paddy fields and six types of abandoned fields with different combinations of vegetation successional stage (early, middle, or late) and ...
DOI:
10.1016/j.ecoleng.2018.12.007

16. Value of distributed water level and soil moisture data in the evaluation of a distributed hydrological model: Application to the PUMMA model in the Mercier catchment (6.6 km2) in France

Author:
Fuamba, Musandji; Branger, Flora; Braud, Isabelle; Batchabani, Essoyeke; Sanzana, Pedro; Sarrazin, Benoit; Jankowfsky, Sonja
Source:
Journal of hydrology 2019 v.569 pp. 753-770
ISSN:
0022-1694
Subject:
soil water content,   etc   ; hydrodynamics; hydrologic models; rain; river flow; runoff; simulation models; soil water; subwatersheds; water storage; France;     Show all 11 Subjects
Abstract:
... This paper emphasizes the importance of integrating outlet discharge and observed internal variables in the evaluation of distributed hydrological models outputs. It proposes a general methodology for a diagnostic evaluation of a complex distributed hydrological model, based on discharge data at the outlet and additional distributed information such as water level and surface soil moisture data. T ...
DOI:
10.1016/j.jhydrol.2018.12.035

17. Soil thermal conductivity and its influencing factors at the Tanggula permafrost region on the Qinghai–Tibet Plateau

Author:
Li, Ren; Zhao, Lin; Wu, Tonghua; Wang, Qinxue; Ding, Yongjian; Yao, Jimin; Wu, Xiaodong; Hu, Guojie; Xiao, Yao; Du, Yizhen; Zhu, Xiaofan; Qin, Yanhui; Yang, Shuhua; Bai, Rui; Du, Erji; Liu, Guangyue; Zou, Defu; Qiao, Yongping; Shi, Jianzong
Source:
Agricultural and forest meteorology 2019 v.264 pp. 235-246
ISSN:
0168-1923
Subject:
soil water content,   etc   ; autumn; heat transfer; hydrodynamics; models; permafrost; prediction; seasonal variation; spring; summer; thermal conductivity; winter; China;     Show all 13 Subjects
Abstract:
... Soil thermal conductivity (λ) is one of the essential parameters relating to heat exchange, and it also plays a key role in verifying soil thermal hydrodynamics in permafrost regions. In this paper, the characteristic of in situ λ was analyzed based on data measured from June 2004 to December 2008 at Tanggula district on the Qinghai–Tibet Plateau. The result showed that diurnal λ strongly influenc ...
DOI:
10.1016/j.agrformet.2018.10.011

18. The effect of irrigation on slope stability in the Heifangtai Platform, Gansu Province, China

Author:
Gu, Tian-feng; Zhang, Mao-sheng; Wang, Jia-ding; Wang, Chen-xing; Xu, Yuan-jun; Wang, Xiao
Source:
Engineering geology 2019 v.248 pp. 346-356
ISSN:
0013-7952
Subject:
soil water content,   etc   ; flood irrigation; irrigated farming; irrigation scheduling; landslides; loess; monitoring; rain; seepage; topographic slope; water table; China;     Show all 12 Subjects
Abstract:
... Agricultural irrigation in the Loess Plateau induces many loess landslides. Long-term flood irrigation is frequent on the top platform of loess slopes, where many landslides occur. To confirm the relationship between irrigation and landslides, we monitored the soil moisture content and groundwater level in Heifangtai Platform, and performed tests on unsaturated soil, including TRIM (Transient Rele ...
DOI:
10.1016/j.enggeo.2018.10.026

19. Effect of the population density on belowground bud bank of a rhizomatous clonal plant Leymus secalinus in Mu Us sandy land

Author:
Zhang, Dong-mei; Zhao, Wen-zhi; Luo, Wei-cheng
Source:
Journal of plant research 2019 v.132 no.1 pp. 69-80
ISSN:
0918-9440
Subject:
soil water content,   etc   ; Leymus secalinus; buds; desertification; ecosystems; grasses; habitats; population density; population growth; rhizomes; sand; soil water; spatial distribution;     Show all 13 Subjects
Abstract:
... Clonal propagation is the main strategy for clonal plants to adapt to wind-sand habitat, and underground bud bank could reflect the potential ability of clonal propagation. However, the effects of population density on belowground bud bank are unknown, hindering efforts in the process of dune stabilization. We investigated the horizontal density and vertical distribution of belowground bud bank of ...
DOI:
10.1007/s10265-018-01080-9

20. Carbon Deposits in Soils of Pine and Spruce Forests of Karelia

Author:
Bakhmet, O. N.
Source:
Contemporary problems of ecology 2018 v.11 no.7 pp. 697-703
ISSN:
1995-4255
Subject:
soil water content,   etc   ; Picea; Pinus; carbon; coniferous forests; forest litter;     Show all 6 Subjects
Abstract:
... Average carbon-deposit values in soils of pine and spruce forests have been assessed on the basis of long-term studies of Karelian soils (122.3 and 117.9 t ha–¹ respectively). The higher average carbon content in soils of pine forests is caused by a high share of waterlogged forest types in the total area occupied by pine forests. It is found that average carbon deposits in the forest litter incre ...
DOI:
10.1134/S199542551807003X