scholarly journals Data Reconstruction for a Disturbed Soil-Column Experiment Using an Optimal Perturbation Regularization Algorithm

2012 ◽  
Vol 2012 ◽  
pp. 1-16
Author(s):  
Gongsheng Li ◽  
De Yao ◽  
Yongzai Wang
Keyword(s):  
Soil Column ◽  
Column Experiment ◽  
Data Reconstruction ◽  
Regularization Algorithm ◽  
Optimal Perturbation ◽  
Disturbed Soil ◽  
Soil Column Experiment

scholarly journals Author Correction: Hydrochar did not reduce rice paddy NH3 volatilization compared to pyrochar in a soil column experiment

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Xiaoyu Liu ◽  
Yueqin Cheng ◽  
Yang Liu ◽  
Danyan Chen ◽  
Yin Chen ◽  
...  
Keyword(s):  
Soil Column ◽  
Column Experiment ◽  
Rice Paddy ◽  
Nh3 Volatilization ◽  
Soil Column Experiment

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

A new mathematical model for soil-column experiment and parameter identification

2006 ◽  
Vol 25 (S1) ◽  
pp. 210-210
Author(s):  
Gongsheng Li ◽  
De Yao ◽  
Fugui Yang ◽  
Xiaoqin Wang ◽  
Hongliang Liu
Keyword(s):  
Mathematical Model ◽  
Parameter Identification ◽  
Soil Column ◽  
Column Experiment ◽  
Soil Column Experiment

Microplastics and earthworms in soils: A case study on translocation, toxicity and fate

2020 ◽  
Author(s):  
Nils Dietrich ◽  
Daniel Wilkinson ◽  
Florian Hirsch ◽  
Magdalena Sut-Lohmann ◽  
Antonia Geschke ◽  
...  
Keyword(s):  
Organic Waste ◽  
Soil Column ◽  
Column Experiment ◽  
Lumbricus Terrestris ◽  
Natural Soil ◽  
Arable Soils ◽  
Different Types ◽  
Soil Column Experiment ◽  
Illegal Waste

<p>Microplastics are not only found in marine and lacustrine environments but also in soils. Microplastics enter natural soil environments from legal or illegal waste deposition. In arable soils, microplastics often stem from the decomposition of plastic sheeting. The accumulation of (micro-)plastic from garbage bags in which biological waste is often disposed, is also a significant problem for the recycling and composting of organic waste. Commercially available compostable bags are advertised as degradable. Thus, these compostable bags ought to accumulate less in soils than non-compostable bags. We present a pilot study to determine the preference of earthworms (Lumbricus terrestris and Eisenia hortensis) for taking up and translocating different types of microplastic in soils. Our initial findings from the soil column experiment suggest that the earthworms show a strong tendency for the uptake of microplastic.  We also observed direct and indirect transport of microplastic by earthworms from the surface to deeper parts of the soil columns.</p>

Influence of dissolved humic substances on the leaching of MCPA in a soil column experiment

Chemosphere ◽  
2002 ◽  
Vol 46 (4) ◽  
pp. 495-499 ◽  
Author(s):  
Georg Haberhauer ◽  
Brigitta Temmel ◽  
Martin H Gerzabek
Keyword(s):  
Humic Substances ◽  
Soil Column ◽  
Column Experiment ◽  
Soil Column Experiment ◽  
Dissolved Humic Substances

scholarly journals Examination of lead absorption ability on chernozem soil and the observation of the accumulation effect of Lactusa sativa L. in pot experimentation

2014 ◽  
pp. 101-104
Author(s):  
Edit Sárközi ◽  
Levente Kardos ◽  
Panna Sepsi ◽  
Zsolt Varga ◽  
György Bisztray ◽  
...  
Keyword(s):  
Lactuca Sativa ◽  
Soil Column ◽  
Column Experiment ◽  
Lead Content ◽  
Chernozem Soil ◽  
Lead Adsorption ◽  
Lactuca Sativa L ◽  
Accumulation Capacity ◽  
Accumulation Effect ◽  
Soil Column Experiment

In our research a chernozem soil sample formed on loess was collected from an area under cultivation. Our aim was to determine the lead adsorption capacity using a soil column experiment. The study showed saturation of lead content of the soil. The lead accumulation capacity of Lactuca sativa L. was measured in the sections of roots and leaves applying pot experiments. It could be observed that the lettuce accumulated lead easily from the chernozem soil. The lead content was increased in the analyzed sections of the plants against an increasing lead content.

scholarly journals Discharge Characterization and Variability Determination along Shorter Sections of Soaker Hose Pipe for Soil Column Experiment

2021 ◽  
Vol 34 ◽  
pp. 92-99
Author(s):  
Abdullahi Salisu ◽  
Aimrun Wayayok ◽  
Ahmad F. Abdallah ◽  
Rowshon Md. Kamal
Keyword(s):  
Coefficient Of Variation ◽  
Soil Column ◽  
Column Experiment ◽  
Column Experiments ◽  
Emission Rates ◽  
Pressure Discharge ◽  
Soil Column Experiment ◽  
Soil Wetting ◽  
Micro Irrigation ◽  
Discharge Curves

Unlike other micro-irrigation facilities like a drip, trickle, and sprinklers that emits water at regularly spaced intervals with predefined discharges, porous rubber pipes (soaker hose) has openings of variable sizes that become unevenly spaced with uneven distribution. The latter makes discharge to be variant along its lateral. Shorter sections are used under laboratory column experiments of soil wetting pattern studies and for this reason, laboratory experiments were conducted to evaluate the extent of emission rates variability on short sections of commercial Irrigation Soaker Hose, 16 mm diameter. Three sections of 10 cm length pipes were randomly selected from 15 no's cuts from different parts of the twenty meters length pipe bundle and used to investigate the extent of variability on emission rates characteristics under six different operating pressures. The result was achieved by collecting and measuring water emitted through the pipe sections at pre-determined pressures. The various discharges, coefficient of variation, and pressure-discharge curves of the section of the pipe then determined from the data. The result shows somewhat similar trends on the increase for water collected with an increase in pressures; however, when statistically compared, the discharges among the pipe sections vary. The values of Coefficient of Variation (CV) are less than 10 % as the values CV range from 0.92 % to 5.82 %, which is within a good category, according to ASAE Standard EP405.1 of 0-10%. The findings indicate that, despite variations among the investigated sections, it can use any part as a representative unit in the soil column experiments with reasonable accuracy.

Research of Effect of Groundwater Table Fluctuation on Migration Law of Cadmium

2012 ◽  
Vol 599 ◽  
pp. 455-461
Author(s):  
Xiang Li ◽  
Shun Guo Bai ◽  
Bei Dou Xi ◽  
Zhi Ye Yuan ◽  
Yue Ying Wang
Keyword(s):  
Water Table ◽  
Soil Column ◽  
Column Experiment ◽  
Dominant Factor ◽  
Cadmium Nitrate ◽  
Temporal And Spatial Distribution ◽  
Water Table Fluctuation ◽  
Cadmium Ions ◽  
Soil Column Experiment ◽  
Migration Law

In this paper, we conduct the soil-column experiment on underground soil in a laboratory of Changping, Beijing, to simulate the effect of water table fluctuation on the cadmium migration law after twice pollution. The main job of the experience is to test the adsorption and desorption characteristics of the soil as well as the temporal and spatial distribution of cadmium ions in soil column. The experimental data show that (1) the two kinds of soil used in the test both have a strong adsorption capacity to cadmium ions, and the values could reach to 1026mg/kg and 2804mg/kg. (2) The dominant factor on cadmium ions migration under water table fluctuation is the soil adsorption when a small amount of cadmium ions are poured into soil column. On the other hand, convection plays a significant role in migration when plenty of cadmium ions are injected. (3) When plenty of cadmium nitrate are injected, the concentrations of cadmium ions in fluctuating zone increase with water table rise, and decrease with water table decline. The concentrations of cadmium ions, which exist in the saturated zone decrease when the water table rises and increase with water table decline.

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