Changes in the geometric structure of pores and aggregates as indicators of the structural degradation of cultivated soils

Скворцова, Е. Б.

doi:10.1134/s1064229309110088

Cited by 22 publications

(8 citation statements)

References 6 publications

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“…In order to characterize and assess the structural state of soils, the indices of bulk density, porosity, particle size distribution, and aggregate size distribution are usually applied. Unfortunately, these indices do not give us adequate information on the shape, orientation, and mutual arrangement of the soil pores and aggregates [7]. This information can be obtained with the use of various morphological meth ods.…”

Section: Introductionmentioning

confidence: 99%

Tomographic method of studying soil pore space: Current perspectives and results for some Russian soils

2012

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The methods and results of tomographic soil studies are discussed. A brief history of the develop ment of the tomographic method and its application in soil science are described, and the major results obtained with the use of this method are outlined. An experience of the application of X ray microtomogra phy for studying the structure of undisturbed samples of some Russian soils is also considered. Three dimen sional images of soil aggregates and soil pore space with a resolution of 15.8 µm have been obtained for the upper horizons of gray forest and soddy podzolic soils. On the basis of these data, the merits and demerits of the tomographic method in comparison with the traditional method for studying soil pedality and pore space in thin sections are discussed. Certain advantages of the tomographic method provide good possibilities to study soil processes at a qualitatively new level. Priority directions of the development of tomographic studies in soil science are outlined.

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Section: Introductionmentioning

confidence: 99%

Tomographic method of studying soil pore space: Current perspectives and results for some Russian soils

2012

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“…Soil is a porous medium formed by the connection of solid components and pores in different sizes and shapes, representing the most complex biological material on the earth. Research on soil structure has mainly focused on soil solids and soil pores 1,2 . The processes of soil shrinkage, dispersion, and agglomeration are important structural process, which occur due to soil water, gas, thermal movement, and material transformation (such as carbon and nitrogen).…”

Section: Introductionmentioning

confidence: 99%

Long-term effects of different planting patterns on greenhouse soil micromorphological features in the North China Plain

Liu

Han

Sun

et al. 2019

Sci Rep

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Soil structure represents a basis for soil water retention and fertiliser availability. Here, we performed a micromorphological analysis of thin soil sections to evaluate the effects of 10 years of organic planting (OPP), pollution-free planting (PFP), and conventional planting (CPP) on greenhouse soil structure in the North China Plain. We also analysed soil bulk density, soil organic matter (SOM), and wet aggregate stability. The CPP soil microstructure included weakly separated angular block or plate forms and weak development of soil pores (fissured or simply accumulated pores) with the highest bulk density (1.33 g cm−3) and lowest SOM (26.76 g kg−1). Unlike CPP, the OPP soil microstructure was characterised by highly separated granular and aggregated structures and an abundance of plant and animal remains. OPP was associated with the highest total porosity (55.4%), lowest bulk density (1.17 g cm−3), and highest SOM (54.81 g kg−1) in the soil surface layer. OPP also improved the ventilation pore content (proportion of pores >0.1 mm, 44.09%). OPP aggregates showed different hierarchies of crumb microstructure and higher mean weight diameter and geometric mean diameter values than did CPP. These results confirm the benefits of long-term OPP for soil structure and quality in the greenhouse.

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“…The soil structure and its impact on soil health and resilience to disturbance can be measured using a number of different approaches, including physical and visual, while estimates of soil texture are normally carried out by hand or using a number of laboratory approaches. It was demonstrated [1] that the geometric characteristics of soil pores varied under different levels of compaction and structural damage. Visual soil assessment approaches give results that in many cases link closely to direct physical measurements of structure-related soil parameters [2].…”

Section: Introductionmentioning

confidence: 99%

Automated Soil Physical Parameter Assessment Using Smartphone and Digital Camera Imagery

et al. 2016

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Here we present work on using different types of soil profile imagery (topsoil profiles captured with a smartphone camera and full-profile images captured with a conventional digital camera) to estimate the structure, texture and drainage of the soil. The method is adapted from earlier work on developing smartphone apps for estimating topsoil organic matter content in Scotland and uses an existing visual soil structure assessment approach. Colour and image texture information was extracted from the imagery. This information was linked, using geolocation information derived from the smartphone GPS system or from field notes, with existing collections of topography, land cover, soil and climate data for Scotland. A neural network model was developed that was capable of estimating soil structure (on a five-point scale), soil texture (sand, silt, clay), bulk density, pH and drainage category using this information. The model is sufficiently accurate to provide estimates of these parameters from soils in the field. We discuss potential improvements to the approach and plans to integrate the model into a set of smartphone apps for estimating health and fertility indicators for Scottish soils.

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Changes in the geometric structure of pores and aggregates as indicators of the structural degradation of cultivated soils

Cited by 22 publications

References 6 publications

Tomographic method of studying soil pore space: Current perspectives and results for some Russian soils

Tomographic method of studying soil pore space: Current perspectives and results for some Russian soils

Long-term effects of different planting patterns on greenhouse soil micromorphological features in the North China Plain

Automated Soil Physical Parameter Assessment Using Smartphone and Digital Camera Imagery

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