Relevant bibliographies by topics / Soil reconstruction / Journal articles
To see the other types of publications on this topic, follow the link: Soil reconstruction.

Journal articles on the topic 'Soil reconstruction'

Author: Grafiati
Published: 19 February 2023

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 journal articles for your research on the topic 'Soil reconstruction.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse journal articles on a wide variety of disciplines and organise your bibliography correctly.

1

Long, Chun Ying, and Hui Zhang. "Soil Moisture Dynamic Discussed of the Exchanging Vegetation Reconstruction of Ying Rui Highway in the Spring." Applied Mechanics and Materials 90-93 (September 2011): 3245–49. http://dx.doi.org/10.4028/www.scientific.net/amm.90-93.3245.

Full text
Abstract:
With interchanging vegetational reconstruction of Ying Rui highway as the research object, using Drying method as principal combining with TDR method,carry out communication areas of different vegetation types and different matrix types of slope area of dynamic monitoring soil moisture in the spring, the results show:Soil moisture content in spring declined as time goes on from March 8, to April 7 day. Dynamic general trend of soil moisture declined from 6：00 am to 6 :00pm,the soil moisture content overall drop which slightly fluctuates after afternoon, but has no obvious peak, and increases again after evening .The soil moisture content of two kinds of reconstruction models varies with different soil layer thickness:0-20 cm soil shows trees reconstructing model >shrubs reconstruction model ;20 to 40 cm soil shows bush rebuild model> trees reconstruction model.
APA, Harvard, Vancouver, ISO, and other styles
2

Wang, Lingling, Yange Li, Jianjun Zhang, Mingjie Qian, and Yingui Cao. "Analysis on the Difference of Reconstructed Soil Moisture Content in a Grassland Open-Pit Mining Area of China." Agronomy 12, no. 5 (April 28, 2022): 1061. http://dx.doi.org/10.3390/agronomy12051061.

Full text
Abstract:
To reveal the variability of different reconstructed soil ratios and different vegetation growth grades on the water holding capacity of recon-structed soil, the most suitable ratio of reconstructed soil materials was explored. Taking the inner dump of Shengli mining area in Inner Mongolia of China as the research area, the reconstructed soil of reclaimed land was investigated and sampled. One-way analysis of variance was used to analyze the difference of the moisture content of the reconstructed soil, and the reasons for the difference were discussed. The results showed that: (1) Among the different soil reconstructions, soil moisture content was higher when soil reconstructions were rock and soil stripping material: coal gangue: fly ash = 3:4:3. The soil moisture content of un-reclaimed land was mostly at a high level when the soil reconstruction method was rock and soil stripping material; and the soil moisture content was not at the highest level when the vegetation growth grade was higher. This indicates that it was not the case that the better the vegetation growth condition was, the higher the soil moisture content was. (2) In the case where the soil reconstruction method was rock and soil stripping material: coal gangue = 2:3, the soil moisture content of the reclaimed land decreased with the reduction of tillage frequency when the vegetation growth condition was optimal (vegetation growth grade was 4). (3) In the case where the soil reconstruction method was rock and soil stripping material: coal gangue: fly ash = 3:4:3, when the vegetation growth condition was better (vegetation growth grade was 3 and 4), the soil moisture content of the re-claimed land was highest when it was tilled once every 15 days. It was also found in combination with other soil reconstruction methods that it was not always the case that the higher the frequency of tillage, the higher the soil moisture content. The study of coal gangue, fly ash and rocky soil stripping as topsoil substitute materials with their different ratios on reconstructed soil provides support for the reclamation work in topsoil scarce mines and provides technical reference for the ecological restoration project of grassland open-pit mines in the same climate zone.
APA, Harvard, Vancouver, ISO, and other styles
3

McBratney, A. B., T. F. A. Bishop, and I. S. Teliatnikov. "Two soil profile reconstruction techniques." Geoderma 97, no. 3-4 (September 2000): 209–21. http://dx.doi.org/10.1016/s0016-7061(00)00039-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Chen, Xiao Yang, Jia Ping Yan, and Xiu Fang Yang. "Physio-Chemical Properties and Hydraulic Characteristics of Reconstruction Soil Filling with Fly Ash." Advanced Materials Research 356-360 (October 2011): 2669–72. http://dx.doi.org/10.4028/www.scientific.net/amr.356-360.2669.

Full text
Abstract:
Abstract. Efficient full use of fly ash is still an important issue which has been troubled by the developing countries like China, and a large area subsidence as a result of coal mining also give rise to serious damage for agricultural soils. The agricultural soil profile reconstruction is great significance with fly ash as a substrate because of combining the two problems. In this paper, the feasibility of soil reconstruction is discussed through studying the physio-chemical properties and hydraulic characteristics of fly ash. The results show that the physio-chemical properties of fly ash layer in reconstruction soil profile tend to healthy development with rehabilitation time increasing. Though fly ash layer has a higher water content and poor ability of water vertical upward movement compared to surface soil, but the parameters values are basically appropriate to crop production and not evidently decreasing yields. As for potential groundwater pollution due to solute downward transport of reconstruction soil, we will start further research and draw up solution.
APA, Harvard, Vancouver, ISO, and other styles
5

Michu, E. "A short guide to phylogeny reconstruction." Plant, Soil and Environment 53, No. 10 (January 7, 2008): 442–46. http://dx.doi.org/10.17221/2194-pse.

Full text
Abstract:
This review is a short introduction to phylogenetic analysis. Phylogenetic analysis allows comprehensive understanding of the origin and evolution of species. Generally, it is possible to construct the phylogenetic trees according to different features and characters (e.g. morphological and anatomical characters, RAPD patterns, FISH patterns, sequences of DNA/RNA and amino acid sequences). The DNA sequences are preferable for phylogenetic analyses of closely related species. On the other hand, the amino acid sequences are used for phylogenetic analyses of more distant relationships. The sequences can be analysed using many computer programs. The methods most often used for phylogenetic analyses are neighbor-joining (NJ), maximum parsimony (MP), maximum likelihood (ML) and Bayesian inference.
APA, Harvard, Vancouver, ISO, and other styles
6

Raymond, Gerald P. "Failure and reconstruction of a gantry crane ballasted track." Canadian Geotechnical Journal 38, no. 3 (June 1, 2001): 507–29. http://dx.doi.org/10.1139/t00-121.

Full text
Abstract:
The paper deals with the reconstructions that were undertaken to correct multiple ballasted track foundation failures for a heavy gantry crane initially constructed in 1985. A satisfactory design was obtained in 1988 that incorporated geosynthetics.Key words: gantry crane, ballasted track, failure, reconstruction, geosynthetics, soil mechanics, foundation.
APA, Harvard, Vancouver, ISO, and other styles
7

Krutov, V. I., and A. S. Kovalev. "Soil compaction in industrial building reconstruction." Soil Mechanics and Foundation Engineering 23, no. 6 (November 1986): 219–23. http://dx.doi.org/10.1007/bf01716685.

Full text
APA, Harvard, Vancouver, ISO, and other styles
8

Brovko, I. S., Y. B. Kunanbayeva, E. I. Brovko, and K. S. Baibolov. "EXPERIMENTAL SUBSTANTIATION OF SOIL SELECTION IN RECONSTRUCTION OF A MAIN GAS PIPELINE." NEWS of National Academy of Sciences of the Republic of Kazakhstan 6, no. 444 (December 15, 2020): 41–49. http://dx.doi.org/10.32014/2020.2518-170x.129.

Full text
Abstract:
The results of complex geotechnical studies aimed at creating a temporary soil dam for the reconstruction of the main gas pipeline are conducted. Based on the study of the properties of the three types of soils that are in the vicinity, the technical-economical efficiency and prediction of the compaction of the recommended soil are substantiated. The choice of soil laid in the dam should be carried out on the basis of the study of the properties of soils and feasibility study. Technical-economical assessment is impossible without knowledge of the characteristics of the soil, which were obtained in laboratory conditions. Three series of experiments were performed for this: determination of soil density; determination of the angle of repose; determination of soil filtration coefficient. The parameters were investigated in the course of the experiments, on which the quality of the soil dam depends to the greatest extent: density; angle of repose during dumping; filtration properties (filtration coefficient). Based on an analysis of the current situation, proceeding on environmental requirements and considerations of economic feasibility, it was proposed to fill in a temporary embankment to allow the piles to be loaded by driving, and to make it out of medium-sized sand composing the surface thickness in a given area. On the assumption of the technological requirements of the reconstruction, the dam should be 5 m high and 36 m high on the top and 51 m high on the bottom. Based on experimental-analytical researches, a motivated choice of soil is substantiated, which made it possible to obtain an economic effect confirmed by the act.
APA, Harvard, Vancouver, ISO, and other styles
9

Zhang, H. C., B. Li, M. S. Yang, G. L. Lei, H. Ding, Jie Niu, H. F. Fan, W. X. Zhang, and F. Q. Chang. "Dating Paleosol and Animal Remains in Loess Deposits." Radiocarbon 48, no. 1 (2006): 109–16. http://dx.doi.org/10.1017/s0033822200035438.

Full text
Abstract:
Accurate and reliable dating of paleosols, animal remains, and artifacts is of crucial importance in reconstructing environmental change and understanding the interrelationship between human activities and natural environments. Dating different materials in the same sample can help resolve problems such as soil carbon sources and carbon storage state. Conventional radiocarbon dating of soil (inorganic and organic matter) and accelerator mass spectrometry (AMS) dating of animal remains (fossil bones and teeth) result in different ages for materials from the same sample position in a typical loess section at Xinglong Mountain, Yuzhong County, Gansu Province in NW China. Inorganic matter is ∼3400 yr older than organic matter, 4175 ± 175 cal BP to 3808 ± 90 cal BP. A 1610-yr difference between the 14C ages of fossils (animal bones and teeth) and soil organic matter suggests that a depositional hiatus exists in the studied profile. The varying 14C ages of fossils and soil organic and inorganic matter have important implications for paleoclimate reconstructions from loess sections. It is critical to consider the meaning of the variable 14C ages from different material components from the same sample position in terms of soil organic and inorganic carbon storage, vegetation history reconstruction, archaeology, and the study of ancient civilizations.
APA, Harvard, Vancouver, ISO, and other styles
10

Matviyishyna, Zhanna, Sergiy Doroshkevich, and Anatoliy Kushnir. "Reconstruction of trypilliantime landscapes using paleopedological studies." Visnyk of the Lviv University. Series Geography, no. 48 (December 23, 2014): 107–16. http://dx.doi.org/10.30970/vgg.2014.48.1298.

Full text
Abstract:
Based on studies of buried soils at two archaeological sites Holocene (Likarove, Myropill) territory Podolski–at-Dnieper forest-steppe zone of Ukraine reconstructed landscapes time of life Trypilska cultural community (6 000-4 000 B.P). The research results are based on data from a comprehensive study of active paleopedolohichnoho using micromorphological analysis of ancient and modern soils. These data illustrate partially offset boundaries of modern landscape areas to the north compared to the corresponding stage of the long-standing nature. Key words: landscape, buried soil, Holocene, paleopedological research, Trypillian culture.
APA, Harvard, Vancouver, ISO, and other styles
11

Stolt, M. H., J. C. Baker, and T. W. Simpson. "Soil-Landscape Relationships in Virginia: II. Reconstruction Analysis and Soil Genesis." Soil Science Society of America Journal 57, no. 2 (March 1993): 422–28. http://dx.doi.org/10.2136/sssaj1993.03615995005700020023x.

Full text
APA, Harvard, Vancouver, ISO, and other styles
12

Yaalon, Dan. "Comments on soil memory and paleo-environmental reconstruction of soil evolution." Eurasian Soil Science 44, no. 4 (April 2011): 462–63. http://dx.doi.org/10.1134/s1064229311040120.

Full text
APA, Harvard, Vancouver, ISO, and other styles
13

Khomutova, Tatiana, Kamilla Dushchanova, and Alexandr Borisov. "Microbiological Approach to Reconstruction of the Original Content of Pots from the Burials." Nizhnevolzhskiy Arheologicheskiy Vestnik, no. 1 (July 2020): 188–201. http://dx.doi.org/10.15688/nav.jvolsu.2020.1.10.

Full text
Abstract:
In a model soil experiment, microbial decomposition nature and its rate applying to various organic substrates were studied. It is shown that the decomposition of various materials changes the functional features of microbial communities. These changes are assessed using multisubstrate testing of respiratory activity of microbial communities – this testing assumes application of low- molecular respiratory inducers (aminoacids and carboxylic acids) to the soil and registration the changes of the intensity of carbon dioxide release by microorganisms. Indicative compounds such as ascorbate, lactate, acetate (from the group of carboxylic acid salts) and cysteine (from the group of aminoacids) have been identified to be promising for use in reconstructing the original contents of ritual vessels. As an example, the article presents the results of reconstruction of one of bronze age burial pots original content, obtained by multisubstrate testing. High microbial biomass in the bottom layer of the vessel and the specific microbial communities’ respiratory responses to carboxylic acids salts (ascorbate, lactate and acetate) and aminoacid cysteine addition, indicate that the vessel originally contained a nutritional product, the decomposition of which led both to increase of microbial biomass and to changes in the functional structure of microbial community in the soil filling of the bottom layer. The results of statistical analysis of the reactions of soil microbial communities from the pot and from soils of the model experiment with known materials decomposed indicate that the vessel initially contained a protein product with a possible component of oil and starch.
APA, Harvard, Vancouver, ISO, and other styles
14

Li, Gang, Nan Lu, and Yang Wei. "Research progress on contaminated soil remediation materials based on soil organic reconstruction." IOP Conference Series: Earth and Environmental Science 300 (August 9, 2019): 032097. http://dx.doi.org/10.1088/1755-1315/300/3/032097.

Full text
APA, Harvard, Vancouver, ISO, and other styles
15

Castillo, C., M. R. James, M. D. Redel-Macías, R. Pérez, and J. A. Gómez. "SF3M software: 3-D photo-reconstruction for non-expert users and its application to a gully network." SOIL 1, no. 2 (August 27, 2015): 583–94. http://dx.doi.org/10.5194/soil-1-583-2015.

Full text
Abstract:
Abstract. Three-dimensional photo-reconstruction (PR) techniques have been successfully used to produce high-resolution surface models for different applications and over different spatial scales. However, innovative approaches are required to overcome some limitations that this technique may present for field image acquisition in challenging scene geometries. Here, we evaluate SF3M, a new graphical user interface for implementing a complete PR workflow based on freely available software (including external calls to VisualSFM and CloudCompare), in combination with a low-cost survey design for the reconstruction of a several-hundred-metres-long gully network. SF3M provided a semi-automated workflow for 3-D reconstruction requiring ~ 49 h (of which only 17 % required operator assistance) for obtaining a final gully network model of > 17 million points over a gully plan area of 4230 m2. We show that a walking itinerary along the gully perimeter using two lightweight automatic cameras (1 s time-lapse mode) and a 6 m long pole is an efficient method for 3-D monitoring of gullies, at a low cost (~ EUR 1000 budget for the field equipment) and the time requirements (~ 90 min for image collection). A mean error of 6.9 cm at the ground control points was found, mainly due to model deformations derived from the linear geometry of the gully and residual errors in camera calibration. The straightforward image collection and processing approach can be of great benefit for non-expert users working on gully erosion assessment.
APA, Harvard, Vancouver, ISO, and other styles
16

Persico, Raffaele, Sergio Negri, Francesco Soldovieri, and Elena Pettinelli. "Pseudo 3D Imaging of Dielectric and Magnetic Anomalies from GPR Data." International Journal of Geophysics 2012 (2012): 1–5. http://dx.doi.org/10.1155/2012/512789.

Full text
Abstract:
This paper deals with the reconstruction of buried targets exhibiting both dielectric and magnetic characteristics, starting from GPR data collected at the interface air/soil. The problem is tackled under the Born approximation. In particular, two-dimensional migration and linear inversion results will be compared versus experimental data and three-dimensional representations of the reconstructions achieved from both methods will be shown.
APA, Harvard, Vancouver, ISO, and other styles
17

Xu, Zhi Jing, Li Jiang, and Huan Lei Dai. "A Method of Seabed Soil Image Reconstruction Based on Compressed Sensing." Advanced Materials Research 487 (March 2012): 3–6. http://dx.doi.org/10.4028/www.scientific.net/amr.487.3.

Full text
Abstract:
Compressed Sensing(CS) can project a high dimensional signal to a low dimensional signal by a random measurement matrix . As the projection calculation is time-consuming in the process of reconstruction, the reconstruction speed is greatly affected.In order to improve the reconstruction speed , some improvement in the selection of the measurement matrix and the design of the reconstruction algorithm is made. The wavelet transform is used to sparse decompose the image, and the very sparse random projection matrix is used as the measurement matrix, after the image block processing we use the OMP algorithm to reconstruct the image. The experimental result shows that this method could reduce the algorithm time and improved the reconstruction speed greatly.
APA, Harvard, Vancouver, ISO, and other styles
18

Polishchuk, A. I., and T. N. Gutnyk. "RATIONALE FOR THE METHOD OF DETERMINING THE DESIGN RESISTANCE OF FOUNDATION SOIL FOR FOUNDATIONS OF RECONSTRUCTED BUILDINGS." Construction and Geotechnics 12, no. 3 (December 15, 2021): 5–13. http://dx.doi.org/10.15593/2224-9826/2021.3.01.

Full text
Abstract:
The methods for determining the parameter of design resistance of foundation soil R for shallow foundations of reconstructed (restorable) buildings built on sandy and clayey soils are considered. It is established that during the long-term operation of buildings and structures such soils are compacted, and their properties usually improve. For the conditions of reconstruction and restoration of buildings, the parameter R is commonly referred to as the design resistance of compacted foundation soil Rup . The known methods of determination of Rup parameter published in works of Russian scientists for the last 50 years (since 1971) have been analyzed by the authors. The most effective among the considered methods is the engineering method (1997) that takes into account not only the improvement of soil properties under the foundations but also their weakening (deterioration) caused by watering of these soils during the period of the buildings operation. This method of determining Rup is based on the recommendations for the calculation of R according to SP 22.13330.2016, which includes additions that take into account the changes in the above soil characteristics. The scope of the method applies to clays, loams and sandy loam from hard to flowable (plastic) consistency. In order to design shallow foundations in various cases of reconstruction and restoration of buildings on sandy and clay soils, it is necessary to further develop the methods of determining the parameter Rup .
APA, Harvard, Vancouver, ISO, and other styles
19

Gao, Guizai, Dongmei Jie, Lidan Liu, Hongyan Liu, Dehui Li, Nannan Li, Jichen Shi, Chengcheng Leng, and Zhihe Qiao. "Assessment and calibration of representational bias in soil phytolith assemblages in Northeast China and its implications for paleovegetation reconstruction." Quaternary Research 90, no. 1 (April 10, 2018): 38–49. http://dx.doi.org/10.1017/qua.2018.5.

Full text
Abstract:
AbstractThe assessment and calibration of representational bias in modern soil phytolith assemblages provide the basis for improving interpretation of fossil phytolith assemblages. We studied soil phytolith representation by comparing phytoliths from living plant communities with those from paired surface soils, representing 39 plant communities in Northeast China. Together with the use of representation indices, the 34 and 30 soil morphotypes observed in forest and grassland samples, respectively, were both classified into the following four groups: “Associated types” were similarly represented in soils and in the corresponding species inventory data; “Over-represented types” and “Under-represented types” were respectively over- and under-represented in soils compared to the inventory data; and, in the case of “Special types,” the relationship with the parent plants was unclear. In addition, the diagnostic types exhibited different degrees of representation, while the most common morphotypes were equally represented between grassland samples and forest samples. On this basis, a comparison between the original and corrected soil phytolith indices of the additional 29 soil samples was conducted. The soil phytoliths frequencies corrected by R-values differed between plots with differing plant compositions, and were moderately consistent with actual plant richness in the plot inventory data. We therefore confirmed that R-values are a promising means of correcting soil phytoliths for representational bias in temperate regions. The corrected soil phytoliths can be used to reliably reflect vegetation variability. Overall, our study provides an improved understanding of soil phytolith representation and offers a potential method for improving the accuracy of paleovegetation reconstruction.
APA, Harvard, Vancouver, ISO, and other styles
20

Dahms, Dennis E., and Vance T. Holliday. "Soil taxonomy and paleoenvironmental reconstruction: A critical commentary." Quaternary International 51-52 (January 1998): 109–14. http://dx.doi.org/10.1016/s1040-6182(97)00037-2.

Full text
APA, Harvard, Vancouver, ISO, and other styles
21

Deka, Jumi, Kundan Saha, Tukhar Jyoti Konch, Raj Kumar Gogoi, Subhasmita Saikia, Partha Pratim Saikia, Gitish K. Dutta, and Kalyan Raidongia. "Reconstruction of Soil Components into Multifunctional Freestanding Membranes." ACS Omega 4, no. 1 (January 15, 2019): 1292–99. http://dx.doi.org/10.1021/acsomega.8b03144.

Full text
APA, Harvard, Vancouver, ISO, and other styles
22

Qiao, Yuxin, Huazhong Zhu, Huaping Zhong, and Yuzhe Li. "Stratified Data Reconstruction and Spatial Pattern Analyses of Soil Bulk Density in the Northern Grasslands of China." ISPRS International Journal of Geo-Information 9, no. 11 (November 15, 2020): 682. http://dx.doi.org/10.3390/ijgi9110682.

Full text
Abstract:
The spatial pattern of soil bulk density in the grasslands of northern China largely remains undefined, which raised uncertainty in understanding and modeling various soil processes in large spatial scale. Based on the measured data of soil bulk density available from soil survey reports from the grasslands of northern China, we constructed a soil Stratified Pedotransfer function (SPTF) from the surface soil bulk density. Accordingly, the stratified bulk density data of soil vertical profile was reconstructed, and the estimation of soil bulk density data in horizontal space was performed. The results demonstrated that the soil bulk density of the grasslands of northern China was typically high in the central and northwestern regions and low in the eastern and mountainous regions. Mean soil bulk density of the grasslands was 1.52 g·cm−3. According to geographical divisions, the highest soil bulk density was observed in the Tarim basin, with mean soil bulk density of 1.91 g·cm−3. Conversely, the lowest soil bulk density was observed in the Tianshan Mountain area, with mean soil bulk density of 1.01 g·cm−3. Based on data obtained on various types of grasslands, the soil bulk density of alpine meadow was the lowest, with a mean soil bulk density of 0.75 g·cm−3, whereas that of temperate desert was the highest, with mean soil bulk density of 1.80 g·cm−3. Mean prediction error, root mean square deviation, relative error, and multiple correlation coefficient of soil bulk density data pertaining to surface layer (0–10 cm) in the grasslands of northern China were 0.018, 0.223, 16.2%, and 0.5386, respectively. The approach of employing multiple data sources via soil transfer function improved the estimation accuracy of soil bulk density from stratified soils data at the large scale. Our study would promote the accurate assessment of grassland carbon storage and fine land characteristics mapping.
APA, Harvard, Vancouver, ISO, and other styles
23

Pierzgalski, Edward, and Jerzy Jeznach. "Measures for soil water control in Poland." Journal of Water and Land Development 10, no. 1 (December 1, 2006): 79–89. http://dx.doi.org/10.2478/v10025-007-0007-5.

Full text
Abstract:
Measures for soil water control in Poland Polish water resources depend on precipitations, which are variable in time and space. In dry years the water balance is negative in central parts of Poland but sudden thaws and downfalls may result in periodical water excess and dangerous floods almost in the entire country. The retention capacity of artificial reservoirs in Poland permits to store only 6% of the average annual runoff, which is commonly considered insufficient. Another method to increase retention is soil water control. About fifty percent of soils in Poland consist of light and very light sandy soils with low water capacity. Loams and organogenic soils cover approximately 25% and 8.5% area of the country, respectively. Almost half of agricultural lands (48%) have relatively good water conditions, but the rest requires soil water control measures. An increase of the soil water content could be achieved by changes of soil properties, water table control and soil water management. Modernization and reconstruction of drainage and irrigation systems, which were built mainly in the period 1960-1980, is needed.
APA, Harvard, Vancouver, ISO, and other styles
24

Korovkin, Vladimir. "Creep gantry quay and accounting environment in its reconstruction." Environment. Technology. Resources. Proceedings of the International Scientific and Practical Conference 2 (June 17, 2015): 148. http://dx.doi.org/10.17770/etr2015vol2.235.

Full text
Abstract:
<p>Quay gantry type calculates in the technical literature in the form of a frame with hard rigel and rigid stopping up of piles. To account for long-term durability of the structures in the plastic clay soils in the existing scheme is additionally used the equation of state of a Newtonian viscous fluid. In Its uses the coefficient of shear viscosity.</p><p>The author used the proposed of the early engineering universal method of calculating berthing quays with respect to the thin walls, secured of anchor piles. In the design scheme not used lower secured racks, and counts up the stiffness characteristics of the soil, clarifying the nature of the work structures.</p><p>To account for the operation of facilities in the plastic clay soils in the proposed scheme uses a different equation of state of a Newtonian viscous fluid. It uses the ratio of the coefficient of viscosity in compression of porous soil (coefficient of Trutona).This allows us to consider how long-term strength and displacement of the structure in time.</p><p>Considers the issues of contamination and turbidity in the reconstruction of the gantry bulwark.</p>
APA, Harvard, Vancouver, ISO, and other styles
25

Tanirbergenov, Samat, Elmira Saljnikov, Beibut Suleimenov, Abdulla Saparov, and Dragan Cakmak. "Salt affected soils under cotton-based irrigation agriculture in southern Kazakhstan." Zemljiste i biljka 69, no. 2 (2020): 1–14. http://dx.doi.org/10.5937/zembilj2002001t.

Full text
Abstract:
Soil salinity of the irrigated soils in a cotton farm of Kazakhstan was studied aimed to provide background for reconstruction of collection-drainage system of whole region and preventing soil deterioration. The experimental data obtained for 2012-2014 were plotted for the development of the map of soil salinity (1:10000) seasonally and vertically. In spring 2014 the area under medium saline soil in 0-20 cm layer decreased from 79.5 to 57.7%; the area of weakly saline soils increased from 20.5 to 34.6%. In autumn and winter periods the area of strongly saline soils decreased from 25.6 to 14.1%. The area of non-saline soils was 7.7%. The changes in the ions amount, both vertically and seasonally, occur with transport of salts along soil profile driven by temperature gradients and the level of ground water, i.e., in spring from up to down, and in autumn and winter, contrary from down to up.
APA, Harvard, Vancouver, ISO, and other styles
26

Jia, Yufu, Guoan Wang, Qiqi Tan, and Zixun Chen. "Temperature exerts no influence on organic matter <i>δ</i><sup>13</sup>C of surface soil along the 400 mm isopleth of mean annual precipitation in China." Biogeosciences 13, no. 17 (September 13, 2016): 5057–64. http://dx.doi.org/10.5194/bg-13-5057-2016.

Full text
Abstract:
Abstract. Soil organic carbon is the largest pool of carbon in the terrestrial ecosystem, and its isotopic composition is affected by a number of factors. However, the influence of environmental factors, especially temperature, on soil organic carbon isotope values (δ13CSOM) is poorly constrained. This impedes the application of the variability of organic carbon isotopes to reconstructions of paleoclimate, paleoecology, and global carbon cycling. Given the considerable temperature gradient along the 400 mm isohyet (isopleth of mean annual precipitation – MAP) in China, this isohyet provides ideal experimental sites for studying the influence of temperature on soil organic carbon isotopes. In this study, the effect of temperature on surface soil δ13C was assessed by a comprehensive investigation of 27 sites across a temperature gradient along the isohyet. Results demonstrate that temperature does not play a role in soil δ13C. This suggests that organic carbon isotopes in sediments cannot be used for paleotemperature reconstruction and that the effect of temperature on organic carbon isotopes can be neglected in the reconstruction of paleoclimate and paleovegetation. Multiple regressions with MAT (mean annual temperature), MAP, altitude, latitude, and longitude as independent variables and δ13CSOM as the dependent variable show that these five environmental factors together account for only 9 % of soil δ13C variance. However, one-way ANOVA analyses suggest that soil type and vegetation type are significant factors influencing soil δ13C. Multiple regressions, in which the five aforementioned environmental factors were taken as quantitative variables, and vegetation type, soil type based on the Chinese Soil Taxonomy, and World Reference Base (WRB) soil type were separately used as dummy variables, show that 36.2, 37.4, and 29.7 %, respectively, of the variability in soil δ13C are explained. Compared to the multiple regressions in which only quantitative environmental variables were introduced, the multiple regressions in which soil and vegetation were also introduced explain more of the isotopic variance, suggesting that soil type and vegetation type exert a significant influence on δ13CSOM.
APA, Harvard, Vancouver, ISO, and other styles
27

Leskiw, L. A. "Battle River Soil Reconstruction Project: Five year results of the Torlea soil experiment." Journal American Society of Mining and Reclamation 1989, no. 1 (1989): 531–42. http://dx.doi.org/10.21000/jasmr89010531.

Full text
APA, Harvard, Vancouver, ISO, and other styles
28

Huang, Fan, Wenfeng Zhan, Weimin Ju, and Zhihua Wang. "Improved reconstruction of soil thermal field using two-depth measurements of soil temperature." Journal of Hydrology 519 (November 2014): 711–19. http://dx.doi.org/10.1016/j.jhydrol.2014.08.014.

Full text
APA, Harvard, Vancouver, ISO, and other styles
29

Vasilyev, Sergey, Tatyana Puzanova, Dmitry Vasiliev, Svetlana Borutskaya, Fatima Kurbanova, and Olga Rudenko. "Natural Conditions and Adaptation to them Among the Population of the Caspian Region in the Early Iron Age." Stratum plus. Archaeology and Cultural Anthropology, no. 6 (December 30, 2021): 333–47. http://dx.doi.org/10.55086/sp216333347.

Full text
Abstract:
The article presents the results of research on the reconstruction of natural and climatic conditions and human adaptation to them. In order to identify the evolutionary stages of the natural environment of the Western Caspian region in the second half of the Holocene, buried sub-kurgan soils and bone remains in the Bogomolny Sands 1 mound were analyzed. Spore-pollen, anthropological and isotope analyses were carried out on soil and bone samples. Bioclimatic fluctuations of the natural environment were established based on the reconstruction of paleolandscapes (soils, vegetation) and associated changes in socio-cultural factors (changes in paleo-diet, anthropological characteristics).
APA, Harvard, Vancouver, ISO, and other styles
30

Vasilyev, Sergey, Tatyana Puzanova, Svetlana Borutskaya, Gennadiy Starodubtsev, Fatima Kurbanova, Alexandr Zorin, and Olga Rudenko. "Natural Conditions and Adaptation to them in the Medieval Population of Forest-Steppes." Stratum plus. Archaeology and Cultural Anthropology, no. 5 (October 29, 2021): 65–76. http://dx.doi.org/10.55086/sp2156576.

Full text
Abstract:
The article presents the results of research on the reconstruction of natural and climatic conditions and human adaptation to them. In order to identify the stages of the evolution of the natural environment of the forest-steppe zone (Kursk region) in the Middle Ages, buried sub-kurgan soils and bone remains in the Gochevo burial mound were analyzed. Spore-pollen, anthropological and isotope analyzes were carried out on soil and bone samples. Bioclimatic fluctuations of the natural environment were established based on the reconstruction of paleolandscapes (soils, vegetation) and associated changes in socio-cultural factors (changes in paleo-diet, anthropological characteristics).
APA, Harvard, Vancouver, ISO, and other styles
31

Li, Yuting, Wenxiang Zhou, Ming Jing, Shufei Wang, Yuhan Huang, Bingjin Geng, and Yingui Cao. "Changes in Reconstructed Soil Physicochemical Properties in an Opencast Mine Dump in the Loess Plateau Area of China." International Journal of Environmental Research and Public Health 19, no. 2 (January 9, 2022): 706. http://dx.doi.org/10.3390/ijerph19020706.

Full text
Abstract:
Soil construction and revegetation are essential for ecological restoration in mining areas. The influence of vegetation on the horizontal and vertical distribution patterns of soil properties should be fully understood. However, most studies on reconstructed soils in mining areas only concentrate on the surface soil, without exploring the vertical variations in soil properties. Overall, this study aims to explore the potential mechanisms by which surface vegetation exerts some influence on the spatial distribution of soil physicochemical properties, and to provide some insight into revegetation and soil reclamation in mining areas. Descriptive statistics and one-way analysis of variance (one-way ANOVA) were employed to evaluate the differences in the soil physicochemical properties in horizontal and vertical directions under different land-use types in the south dump of Antaibao opencast mine in Pingshuo, Shanxi Province, China. The main results of this study are as follows: (1) In the horizontal direction, except for the strong variation (variation coefficient ≥ 100%) in soil organic matter (SOM) content at some depths, the degree of variation in other soil physicochemical properties at various depths was moderate or weak (variation coefficient < 100%). The soil physicochemical properties gradually remained constant after years of reclamation. In the vertical direction, the soil bulk density (SBD), soil porosity, SOM content, soil C/N ratio, soil total nitrogen (STN) content, soil available phosphorus (SAP) content, and soil available potassium (SAK) content showed significant variations (p < 0.05) between soil depths. In contrast, no significant difference was found for other physicochemical properties. (2) The SBD, STN, SAK, soil porosity, and soil clay content were significantly different (p < 0.05) under different vegetation cover types, but the influence of vegetation on other soil physicochemical properties seemed to be limited. The results reveal that trees have a stronger ability to reduce soil grain sizes and enhance SAP contents than shrubs or herbs; however, the beneficial effects of herbs on the physicochemical properties of shallow soil are more obvious than those of trees and shrubs. (3) This study indicates that more shrubs and trees should be planted in the areas with low vegetation coverage, and more measures should be taken to improve soil physicochemical properties in order to prevent the occurrence of large-scale degradation. The reconstruction of soil structure should be preferentially considered in the process of soil reconstruction and revegetation in areas under similar conditions. Herbs should first be planted in the early reclamation stage. At the same time, shrubs or trees can be adopted in the middle and late stages of vegetation reconstruction in order to achieve comprehensive revegetation.
APA, Harvard, Vancouver, ISO, and other styles
32

Хрянина, Ольга, Ol'ga Hryanina, Елена Логинова, and Elena Loginova. "EXPEDIENCY OF THE SUPERSTRUCTURE ON THE FLOOR OF A RESIDENTIAL BUILDING UNDER CONSTRUCTION." Construction and Architecture 7, no. 2 (February 13, 2019): 50–56. http://dx.doi.org/10.29039/article_5d4c0a3c1204c3.73611553.

Full text
Abstract:
Summarized the experience of reconstruction of buildings, taking into account the superstructure. During the construction of a residential house, the possibility of adding it to another floor was investigated. A full-scale survey of the soil condition of the foundation and building structures of the constructed part of the building was carried out. Foundation soils were selected under the foundations of the building to determine the basic physicomechanical characteristics. Soil samples were tested in the laboratory of soil mechanics of the Penza GUAS. According to test data, the bearing capacity (design resistance) of the base soils was calculated. The calculation of the monolithic reinforced concrete belt. The main conclusions and recommendations are made.
APA, Harvard, Vancouver, ISO, and other styles
33

Meredith, K. R., W. L. Daniels, Z. W. Orndorff, M. M. Alley, and C. D. Teutsch. "THE INFLUENCE OF SOIL RECONSTRUCTION TECHNIQUES ON MINERAL SANDS MINE SOILS IN VIRGINI." Journal American Society of Mining and Reclamation 2008, no. 1 (June 30, 2008): 700–719. http://dx.doi.org/10.21000/jasmr08010700.

Full text
APA, Harvard, Vancouver, ISO, and other styles
34

Johnson, William C., Karen L. Willey, Joseph A. Mason, and David W. May. "Stratigraphy and environmental reconstruction at the middle Wisconsinan Gilman Canyon formation type locality, Buzzard's Roost, southwestern Nebraska, USA." Quaternary Research 67, no. 3 (May 2007): 474–86. http://dx.doi.org/10.1016/j.yqres.2007.01.011.

Full text
Abstract:
AbstractThe middle Wisconsinan Gilman Canyon Formation at the Buzzard's Roost type locality in southwestern Nebraska was investigated to document the stratigraphy and to reconstruct the environmental and climate record. The Gilman Canyon Formation was subdivided into three loess units and three soils, with radiocarbon ages constraining it between about 40 ka and 25 ka. Stable carbon isotope ratios, magnetic susceptibility, and carbon content were used to define and characterize soils within both the Gilman Canyon Formation and underlying Illinoian Loveland Loess. At the height of soil development within the Gilman Canyon Formation, climate was supporting C4-dominated grassland, with July temperatures equal to or exceeding those of today. Soil-forming intervals within the Loveland Loess, including the Sangamon Soil, also exhibited relative increases in C4 biomass. Climate, as recorded in the Gilman Canyon Formation, is corroborated by regional proxy data. The formation accumulated during MIS 3, and concurrent soil formation coincided with a summer insolation maximum.
APA, Harvard, Vancouver, ISO, and other styles
35

Wang, H., W. Liu, and C. L. Zhang. "Dependence of the cyclization of branched tetraethers on soil moisture in alkaline soils from arid–subhumid China: implications for palaeorainfall reconstructions on the Chinese Loess Plateau." Biogeosciences 11, no. 23 (December 8, 2014): 6755–68. http://dx.doi.org/10.5194/bg-11-6755-2014.

Full text
Abstract:
Abstract. The use of branched glycerol dialkyl glycerol tetraethers (bGDGTs) in loess–palaeosol sequences (LPSs) has shown promises in continental palaeotemperature reconstructions. Thus far, however, little is known about the effect of soil moisture on their distributions in the water-limited Chinese Loess Plateau (CLP). In this study, the relationships between environmental variables and the cyclization of branched tetraethers (CBT) were investigated in arid–subhumid China using 97 surface soils in the CLP and its vicinity, as well as 78 soils with pH > 7 which have been previously published. We find that CBT correlates best with soil water content (SWC) or mean annual precipitation (MAP) for the overall data set. This indicates that CBT is mainly controlled by soil moisture instead of soil pH in alkaline soils from arid–subhumid regions, where water availability is a limiting factor for the producers of bGDGTs. Therefore, we suggest that CBT can potentially be used as a palaeorainfall proxy on the alkaline CLP. According to the preliminary CBT–MAP relationship for modern CLP soils (CBT = −0.0021 × MAP + 1.7, n = 37, r = −0.93), palaeorainfall history was reconstructed from three LPSs (Yuanbao, Lantian, and Mangshan) with published bGDGT data spanning the past 70 ka. The CBT-derived MAP records of the three sites consistently show precession-driven variation resembling the monsoon record based on speleothem δ18O, supporting CBT as a reasonable proxy for palaeorainfall reconstruction in LPS. The direct application of CBT as a palaeorainfall proxy in corroboration with the bGDGT-based temperature proxy may enable us to further assess the temperature/hydrological association for palaeoclimate studies on the CLP.
APA, Harvard, Vancouver, ISO, and other styles
36

Bleich, Klaus Eberhard. "Zur Deutung und Bedeutung von Paläoböden im (süddeutschen) Löß." E&G Quaternary Science Journal 48, no. 1 (January 1, 1998): 50–56. http://dx.doi.org/10.3285/eg.48.1.05.

Full text
Abstract:
Abstract. Prerequisite for the estimation of age and paleoecological interpretation of paleosols in loess is the cognizance of relief and landscape position. Examples from Southern Germany show that already by this properties (like hydromorphy or a change of soil depth and humus contents) can be explained that, in ignoring the situation, were used as criteria for character and length of climatic influences. For the comparison of loess/pa-leosol sequences, the quantitative determination of intensity and extent of soil formation (in kg per m²) concerning suitable fossil and recent soils of the same landscape is reasonable. This requires the limitation on completely preserved soils in plateau position, but does not necessarily imply the imagination of a monotypically developed soil-landscape. These soils, too, have been alternated by periglacial features. The different importance of soil horizons for the reconstruction of the paleoclimate is put out finally.
APA, Harvard, Vancouver, ISO, and other styles
37

Yuan, Shuai, Yonghong Zheng, Yongdong Qi, Fanxi Kong, Dan Wang, and Fangfang Zhang. "A Method for Reconstructing the Past Soil Temperature Based on Tree-Ring Widths." Forest Science 66, no. 4 (February 5, 2020): 393–402. http://dx.doi.org/10.1093/forsci/fxaa001.

Full text
Abstract:
Abstract Soil temperature can affect tree growth and is one of the most important types of basic data for forest cultivation and management. To obtain a long-term time series of soil temperatures, we explored the utility of dendroclimatology in a subtropical area of China. In this study, the relations between tree-ring-width chronologies and climate factors were explored by correlation analysis. The results indicated that the limiting climatic factors for the radial growth of Huangshan pine were elevation-specific. Further investigation found that chronology at high elevations was significantly correlated with soil temperature. Then, we described a reconstruction of the soil temperatures of the Dabie Mountains area using the tree-ring width chronology from 1869 to 2015 and showed that the reconstruction explained 42.9 percent of the instrumental soil temperature variation in the common years. We found that the 1970s and 2000s were the coldest and warmest decades since 1884, respectively. The results of the reconstruction method for describing past soil temperatures can provide a reference for other subtropical forests. Furthermore, the results of our research also have a certain significance for guiding policymaking related to forest cultivation and management.
APA, Harvard, Vancouver, ISO, and other styles
38

Shakirov, Ildus. "Bearing capacity of piles in a reinforced by pressure cementation soil massif." E3S Web of Conferences 274 (2021): 03023. http://dx.doi.org/10.1051/e3sconf/202127403023.

Full text
Abstract:
Studies of the piles bearing capacity after strengthening soil by cement mortar pressure injection were carried out to determine pile foundations bearing capacity increasing patterns in a result of soils cementation. Depending from the volume and cement mortar technological injection parameters, the soil stress state around the pile changes, additional pile-soil compression occurs and the friction along the lateral surface increase, as well as the soil resistance under the pile bottom end. Cementation effect on the pile bearing capacity for different injectors location and the number of piles in the foundation were determined by tests. The research results can be used in the pile foundations reinforcement design in conditions of reconstruction with increasing loads on the foundations.
APA, Harvard, Vancouver, ISO, and other styles
39

Li, Chenhui, Kristen S. Veum, Keith W. Goyne, Márcio R. Nunes, and Veronica Acosta-Martinez. "A chronosequence of soil health under tallgrass prairie reconstruction." Applied Soil Ecology 164 (August 2021): 103939. http://dx.doi.org/10.1016/j.apsoil.2021.103939.

Full text
APA, Harvard, Vancouver, ISO, and other styles
40

Chen, K. H., Y. Zhang, and Y. P. Liu. "Analysis of several key factors in soil organic reconstruction." IOP Conference Series: Earth and Environmental Science 510 (July 14, 2020): 032001. http://dx.doi.org/10.1088/1755-1315/510/3/032001.

Full text
APA, Harvard, Vancouver, ISO, and other styles
41

Zwertvaegher, Ann, Peter Finke, Philippe De Smedt, Vanessa Gelorini, Marc Van Meirvenne, Machteld Bats, Jeroen De Reu, et al. "Spatio-temporal modeling of soil characteristics for soilscape reconstruction." Geoderma 207-208 (October 2013): 166–79. http://dx.doi.org/10.1016/j.geoderma.2013.05.013.

Full text
APA, Harvard, Vancouver, ISO, and other styles
42

Novák, Tibor József, Mihály Molnár, and Botond Buró. "Reconstruction of Soil Carbon Redistribution Processes along a Hillslope Section in a Forested Area." Radiocarbon 60, no. 5 (October 2018): 1413–24. http://dx.doi.org/10.1017/rdc.2018.94.

Full text
Abstract:
ABSTRACTThe vertical distribution of soil organic carbon (SOC) with depth and its horizontal pattern is influenced by the topography and relief of the surface, due to lateral redistribution of soil material along slopes. Spatial and temproral variability of these changes is frequently due to human impacts on the landscape. In our study, the results of these processes were studied in detail in a small sub-catchment in a forested hillslope section using radiocarbon (14C) dating of SOC and embedded datable material (charcoal, artifacts) from soil profiles with colluvial accumulations. Events with accelerated material redistribution could be identified as an accumulation of a 40-cm-thick colluvial layer between cal BC 410–360 (2σ) and cal AD 430–580 (2σ). Later colluvial deposition resulted in thinner accumulations (cal AD 1120–1220 [2σ] 30 cm; cal AD 1810–1920 [2σ] 21 cm). As the earliest human impact, we found soil transformation from cal BC 1290–1130 (2σ). The depth-age model for SOC compiled according to the average SOC age and its depth showed different characteristics on middle-slope and down-slope position, with rates of 48.0 yr×cm–1 and 22.0 yr×cm–1 respectively, which indicates the importance of topographic position of soils in SOC redistribution processes.
APA, Harvard, Vancouver, ISO, and other styles
43

Hosseinpour, M., R. D. Müller, S. E. Williams, and J. M. Whittaker. "Full-fit reconstruction of the Labrador Sea and Baffin Bay." Solid Earth 4, no. 2 (November 26, 2013): 461–79. http://dx.doi.org/10.5194/se-4-461-2013.

Full text
Abstract:
Abstract. Reconstructing the opening of the Labrador Sea and Baffin Bay between Greenland and North America remains controversial. Recent seismic data suggest that magnetic lineations along the margins of the Labrador Sea, originally interpreted as seafloor spreading anomalies, may lie within the crust of the continent–ocean transition. These data also suggest a more seaward extent of continental crust within the Greenland margin near Davis Strait than assumed in previous full-fit reconstructions. Our study focuses on reconstructing the full-fit configuration of Greenland and North America using an approach that considers continental deformation in a quantitative manner. We use gravity inversion to map crustal thickness across the conjugate margins, and assimilate observations from available seismic profiles and potential field data to constrain the likely extent of different crustal types. We derive end-member continental margin restorations following alternative interpretations of published seismic profiles. The boundaries between continental and oceanic crust (COB) are restored to their pre-stretching locations along small circle motion paths across the region of Cretaceous extension. Restored COBs are fitted quantitatively to compute alternative total-fit reconstructions. A preferred full-fit model is chosen based on the strongest compatibility with geological and geophysical data. Our preferred model suggests that (i) the COB lies oceanward of magnetic lineations interpreted as magnetic anomaly 31 (70 Ma) in the Labrador Sea, (ii) all previously identified magnetic lineations landward of anomaly 27 reflect intrusions into continental crust and (iii) the Ungava fault zone in Davis Strait acted as a leaky transform fault during rifting. This robust plate reconstruction reduces gaps and overlaps in Davis Strait and suggests that there is no need for alternative models proposed for reconstructions of this area including additional plate boundaries in North America or Greenland. Our favoured model implies that break-up and formation of continent–ocean transition (COT) first started in the southern Labrador Sea and Davis Strait around 88 Ma and then propagated north and southwards up to the onset of real seafloor spreading at 63 Ma in the Labrador Sea. In Baffin Bay, continental stretching lasted longer and actual break-up and seafloor spreading started around 61 Ma (chron 26).
APA, Harvard, Vancouver, ISO, and other styles
44

Aseyeva, Elena, Alexander Makeev, Fatima Kurbanova, Pavel Kust, Alexey Rusakov, Olga Khokhlova, Evgeniy Mihailov, Tatiana Puzanova, and Alexandra Golyeva. "Paleolandscape Reconstruction Based on the Study of A Buried Soil of the Bronze Age in the Broadleaf Forest Area of the Russian Plain." Geosciences 9, no. 3 (March 1, 2019): 111. http://dx.doi.org/10.3390/geosciences9030111.

Full text
Abstract:
Late Holocene landscape evolution at the southern frontier of the forest belt of European Russia is studied based on detailed morphological, analytical and microbiomorphic research of a soil chronosequence that included a surface soil and a soil buried under the Bronze Age kurgan. Both soils (Folic Eutric Cambisols) are formed on similar geomorphic surfaces in the same parent material and in close proximity to each other. The soil morphology and the key analytical features are controlled by low-reactive parent material and imply close similarity of the present landscapes and those of the Bronze age. At the same time the morphological features show that the buried soil was influenced by the phase of weak aridization, which led to the formation of a dark mull humus horizon. Microbiomorphic assemblages (phytoliths, pollen) support the earlier conclusion that the soils of the study area had being developed mostly under forest vegetation.
APA, Harvard, Vancouver, ISO, and other styles
45

Butenko, A. A., A. O. Mozgovyi, S. V. Butnik, and K. V. Spirande. "Increasing of strength-rigidity parameters of bases of metallic silos." IOP Conference Series: Earth and Environmental Science 1049, no. 1 (June 1, 2022): 012049. http://dx.doi.org/10.1088/1755-1315/1049/1/012049.

Full text
Abstract:
Abstract To date, effective codes of Ukraine limit settlement of foundations of metallic silos to 15 cm. To provide normative settlement of foundation with diameter up to 40 m and more is not always possible without additional essential measures for strengthening or changing base soils. Taking into account high levels of loads, soils of bases in natural condition can not carry stress under the base of foundation and require strengthening. Execution of works on change of soils of bases or installation of soil cushions is not always possible taking into account underflooding of territory, building development that exist near at hand, or other complicating factors. Soil cement after Deep Soil Mixing (DSM) technology, Jet Grouting, injection and micropiles were considered for different types of strengthening taking into account application in great volumes. From analysis of the obtained results, it was determined that soil cement after Deep Soil Mixing technology is the most economically justified method. Application of Jet Grouting is justified during strengthening of soil thicknesses locally separated by depth. Injection and micropiles are used appropriately only in conditions of reconstruction under absence of direct access to the base.
APA, Harvard, Vancouver, ISO, and other styles
46

Сушков, Sergey Sushkov, Бурмистрова, and Olga Burmistrova. "METHODS TO REDUCE DEFORMATION AND DESTRUCTION OF THE BASES OF ROADS IN DIFFICULT CLIMATIC CONDITIONS." Modeling of systems and processes 8, no. 3 (January 11, 2016): 96–98. http://dx.doi.org/10.12737/17185.

Full text
Abstract:
In the article the methods of artificial grouting in the construction and reconstruction of forest roads on weak based using electrochemical treatment, soils, thereby squeezing the labor intensity and increasing the degree of mechanization of work. The method of electrochemical treatment of the soil is to use the effect of electro and spryagatelnyehim processes.
APA, Harvard, Vancouver, ISO, and other styles
47

Wang, G., X. Feng, J. Han, L. Zhou, W. Tan, and F. Su. "Paleovegetation reconstruction using <i>δ</i><sup>13</sup>C of Soil Organic Matter." Biogeosciences Discussions 5, no. 2 (April 18, 2008): 1795–823. http://dx.doi.org/10.5194/bgd-5-1795-2008.

Full text
Abstract:
Abstract. The relative contributions of C3 and C4 plants to vegetation at a given locality may be estimated by means of δ13C of soil organic matter. This approach holds great potential for paleoecological reconstruction using paleosols. However, two uncertainties exist, which limits the accuracy of this application. One is 13C enrichment as plant carbon becomes incorporated into soil organic matter. The other is due to environmental influences on δ13C of plants. Two types of data were collected and analyzed with an objective of narrowing the error of paleovegetation reconstruction. First, we investigated δ13C variations of 557 C3 and 136 C4 plants along a precipitation gradient in North China. A strong negative relationship is found between the δ13C value of C3 plants averaged for each site and the annual precipitation with a coefficient of −0.40‰/100 mm, while no significant coefficients were found for C4 plants. Second, we measured δ13C of soil organic matters for 14 soil profiles at three sites. The isotopic difference between vegetation and soil organic matter are evaluated to be 1.8‰ for the surface soil and 2.8‰ for the soil at the bottom of soil profiles. Using the new data we conducted a sample reconstruction of paleovegetation at the central Chinese Loess Plateau during the Holocene and the Last Glaciation, and conclude that, without corrections for 13C enrichment by decomposition, the C4 abundance would be overestimated. The importance and uncertainties of other corrections are also discussed.
APA, Harvard, Vancouver, ISO, and other styles
48

Wang, G., X. Feng, J. Han, L. Zhou, W. Tan, and F. Su. "Paleovegetation reconstruction using δ<sup>13</sup>C of Soil Organic Matter." Biogeosciences 5, no. 5 (September 18, 2008): 1325–37. http://dx.doi.org/10.5194/bg-5-1325-2008.

Full text
Abstract:
Abstract. The relative contributions of C3 and C4 plants to vegetation at a given locality may be estimated by means of δ13C of soil organic matter. This approach holds a great potential for paleoecological reconstruction using paleosols. However, two main uncertainties exist, which limits the accuracy of this application. One is δ13C-enrichment as the plant carbon becomes incorporated into soil organic matter. The other is due to environmental influences on δ13C of plants. Two types of data were collected and analyzed with an objective of narrowing the error of paleovegetation reconstruction. First, we investigated δ13C variations of 557 C3 and 136 C4 plants along a precipitation gradient in North China. A strong negative correlation is found between the δ13C value of C3 plants averaged for each site and the annual precipitation with a coefficient of −0.40‰/100mm, while no significant coefficients were found for C4 plants. Second, we measured δ13C of soil organic matters for 14 soil profiles at three sites. The isotopic difference between vegetation and soil organic matter are evaluated to be 1.8‰ for the surface soil and 2.8‰ for the soil at the bottom of soil profiles. We conducted a sample reconstruction of paleovegetation at the central Chinese Loess Plateau during the Holocene and the Last Glacial (LG), and conclude that, without corrections for δ13C-enrichment by decomposition, the C4 abundance would be overestimated. The importance and uncertainties of other corrections are also discussed.
APA, Harvard, Vancouver, ISO, and other styles
49

Yang, Xiaofeng, Yimeng Zhang, Junchao Jia, and Xingchang Zhang. "Soil Reclamation Models by Soil Water Infiltration for Refuse Dumps in Opencast Mining Area of Northern China." Sustainability 14, no. 23 (November 29, 2022): 15929. http://dx.doi.org/10.3390/su142315929.

Full text
Abstract:
The water infiltration rules of five different homogeneously or heterogeneously-constructed soil samples were determined to select the best soil construction module for refuse dump reclamation in the opencast mines of the Shanxi-Shaanxi-Inner Mongolia energy circle. Five treatments, including three homogeneous soil samples consisting of sandy soil, Montmorillonite-enriched sandstone, and sand-Montmorillonite-enriched sandstone mixture, together with two heterogeneous soil samples composed of sandy soil + Montmorillonite-enriched sandstone + sandy soil and sandy soil + sandy − Montmorillonite-enriched sandstone mixture (7:3) + sandy soil. Three replicates of each treatment were prepared in the indoor pillars to measure the infiltration process by auto-recording geometry, to investigate the infiltration features of various soil configurations by testing their infiltration rate, cumulative infiltration capacity, wetting front migration, and profile soil content, and to evaluate the infiltration of newly constructed soil in the natural conditions of the research area. The experiment demonstrated that the addition of Montmorillonite-enriched sandstone into sandy soil significantly slowed down soil water infiltration, especially in the heterogeneous soils. Traditional models perfectly simulated the soil water infiltration in the three homogeneous soils in which soil infiltration capacity could be segmentally fitted by Kostiakov model and linear model, and wetting front could be fitted by a power function. Compared with the homogeneous soil samples, heterogeneous soil could reduce the direct surface runoff and deep percolation, and is an idealized structure for soil reconstruction in opencast coal mine dump.
APA, Harvard, Vancouver, ISO, and other styles
50

Kabała, Cezary. "Chernozem (czarnoziem) – soil of the year 2019 in Poland. Origin, classification and use of chernozems in Poland." Soil Science Annual 70, no. 3 (September 1, 2019): 184–92. http://dx.doi.org/10.2478/ssa-2019-0016.

Full text
Abstract:
Abstract The Soil Science Society of Poland has elected chernozem to be the Soil of the Year 2019. Although chernozems cover less than 2% of Poland, they have high importance for agriculture due to their productivity and play a specific scientific role for understanding of soil development and functioning in an environment. Chernozems are also crucial for the reconstruction of Neolithic agriculture development and human impacts on soil and landscape. This introductory paper presents (a) a specific definition of chernozem in Poland, connected with a separate distinction of black earths and colluvial chernozemic soils; (b) a review of the present and former classification schemes for chernozems in Poland and their correlation with international soil classification systems (WRB and Soil Taxonomy); (c) the spatial distribution of chernozems in Poland, their agricultural evaluation and threats for chernozems’ quality and future existence related to intense land use.
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the bibliographies on the topic 'Soil reconstruction' for other source types:
Dissertations / Theses Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography