Can a Blend of Amendments Be an Important Component of a Rehabilitation Strategy for Surface Coal Mined Soils?

Abraha, Amanuel Bokhre; Tesfamariam, Eyob Habte; Truter, Wayne Frederick

doi:10.3390/su11164297

Cited by 6 publications

(3 citation statements)

References 37 publications

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“…The observed MIC and MAC increases indicate that there was an increase in inter-aggregate spaces, which are responsible for the aeration, infiltration, and drainage of water in the soil, as well as in the internal and intra-aggregate spaces, which are responsible for water retention (Schjønning & Lamandé, 2010). Our findings are important because increased soil porosity results in increased air and water movement, thus improving the soil environment for plants (Abraha, Tesfamariam, & Truter, 2019;Oladele, 2019).…”

Section: Resultsmentioning

confidence: 58%

Physical soil properties after seven years of composted tannery-sludge application

Sousa,

Nunes,

Alcântara Neto

et al. 2023

Acta Sci. Agron.

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This study was performed to investigate the effects of composted tannery sludge (CTS) on the physical properties of tropical sandy soil after seven years of CTS application. CTS was applied to a Fluvisol at five rates (0.0, 2.5, 5.0, 10.0, and 20.0 Mg ha-1) in experimental plots (sized 20 m2) with four replications. Water infiltration into the soil was determined in the field with the concentric-ring infiltrometer method. Bulk density, total porosity, macroporosity, and microporosity were determined in the soil samples. The permanent CTS application altered the physical properties of the soil and led to a decrease in bulk density. The total porosity, microporosity and macroporosity values in the CTS-applied soil ranged from 44.1–51.7, 34.6–39.4, and 9.1–12.8%, respectively. Water-infiltration rates were significantly influenced by CTS. The cumulative infiltrated water in the soil varied from 21.3–34.7 cm. The basic infiltration rate was lower in the unamended soil and increased with an increase in the rate of CTS application. This study confirmed that the physical soil parameters improved after the permanent CTS application. Therefore, this application may be a suitable strategy for improving physical soil properties over time.

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Section: Resultsmentioning

confidence: 58%

Physical soil properties after seven years of composted tannery-sludge application

Sousa,

Nunes,

Alcântara Neto

et al. 2023

Acta Sci. Agron.

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“…The benefits of using traditional and/or new innovative approaches needs to be assessed based on their potential negative effects, ease of use and potential high costs. One challenge remains with the development of practical methodologies and specific equipment to apply and incorporate these different ameliorants unless blended prior to application and incorporation into the soil [89].…”

Section: Traditional Versus New Innovative Approaches To Alleviating Soil Compactionmentioning

confidence: 99%

Education in Ecological Engineering—a Need Whose Time Has Come

et al. 2021

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Overcoming Limitations of Ecology and Engineering in Addressing Society’s Challenges By providing an integrated, systems-approach to problem-solving that incorporates ecological principles in engineering design, ecological engineering addresses, many of the limitations of Ecology and Engineering needed to work out how people and nature can beneficially coexist on planet Earth. Despite its origins in the 1950s, ecological engineering remains a niche discipline, while at the same time, there has never been a greater need to combine the rigour of engineering and science with the systems-approach of ecology for pro-active management of Earth’s biodiversity and environmental life-support systems. Broad consensus on the scope and defining elements of ecological engineering and development of a globally consistent ecological engineering curriculum are key pillars to mainstream recognition of the discipline and practice of ecological engineering. The Importance of Ecological Engineering in Society In this paper, the importance of ecological engineering education is discussed in relation to the perceived need of our society to address global challenges of sustainable development. The perceived needs of industry, practitioners, educators and students for skills in ecological engineering are also discussed. The Importance and Need for Ecological Engineering Education The need for integrative, interdisciplinary education is discussed in relation to the scope of ecology, engineering and the unique role of ecological engineering. Scope for a Universally Recognised Curriculum in Ecological Engineering The scope for a universally recognised curriculum in ecological engineering is presented. The curriculum recognises a set of overarching principles and concepts that unite multiple application areas of ecological engineering practice. The integrative, systems-based approach of ecological engineering distinguishes it from the trend toward narrow specialisation in education. It is argued that the systems approach to conceptualising problems of design incorporating ecological principles is a central tenant of ecological engineering practice. Challenges to Wider Adoption of Ecological Engineering and Opportunities to Increase Adoption Challenges and structural barriers to wider adoption of ecological engineering principles, embedded in our society’s reliance on technological solutions to environmental problems, are discussed along with opportunities to increase adoption of ecological engineering practice. It is suggested that unifying the numerous specialist activity areas and applications of ecological engineering under an umbrella encompassing a set of core principles, approaches, tools and way of thinking is required to distinguish ecological engineering from other engineering disciplines and scale up implementation of the discipline. It is concluded that these challenges can only be realised if ecological engineering moves beyond application by a relatively small band of enthusiastic practitioners, learning by doing, to the education of future cohorts of students who will become tomorrow’s engineers, project managers, procurement officers and decision makers, applying principles informed by a growing body of theory and knowledge generated by an active research community, a need whose time has come, if we are to deploy all tools at our disposal toward addressing the grand challenge of creating a sustainable future.

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“…Soil porosity is an essential characteristic of the soil skeleton: it refers to the percentage of pore volume per unit volume of soil (Abraha et al., 2019; Lipiec et al., 2006), which can be measured indirectly by calculation of soil bulk density and soil specific gravity. As one of the main physical characteristics of soil, its value is related to soil types, texture and organic matter content, which exerts a significant influence on soil water and fertiliser conservation, root extension, microbial activity, nutrient transformation, etc., and plays an important role in soil structure.…”

Section: Introductionmentioning

confidence: 99%

Variation in shallow sandy loam porosity under the influence of shallow coal seam mining in north-west China

Fan

Chen

et al. 2020

Energy Exploration & Exploitation

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To study the influence of coal mining on the porosity of shallow sandy loam under conditions of shallow seam mining in thick, loose layers in north-west China, a typical surface sandy loam stratum in Shaanxi Province was taken as the study area, and experiments were performed to test the variation of soil porosity at different depths of 0–10 m in strata before, during and after mining therein. The experimental results demonstrate that the overall average porosities in the disc-shaped edge area, the disc-shaped edge area to the disc-shaped basin bottom area and the disc-shaped subsidence centre area of shallow sandy loam in mining increased by (23.51, 18.07 and 22.61%) respectively compared with that before mining. Mining meant that the soil porosity in the period of stable subsidence after mining changed significantly in the disc-shaped edge area and the disc-shaped edge to the disc-shaped basin bottom area. The disc-shaped edge area shows a trend of slowly rising porosity with the increase of depth, and the disc-shaped edge area to the disc-shaped basin bottom area shows a trend of gradually increasing first and then gradually becoming stable. Although the porosity in the central area of disc-shaped subsidence increased before mining, its trend was similar to that before mining. Although the change in soil porosity in the period of post-mining settlement stability is greater than that before mining, it is best fitted by a quintic polynomial. In general, the rate of change of soil porosity in the study area shows similar trends with depth. It showed a U-shaped variation that first decreased, stabilised for a distance and then gradually increased. This study provides theoretical support for surface soil remediation and ecological environment restoration in coal mining areas.

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Can a Blend of Amendments Be an Important Component of a Rehabilitation Strategy for Surface Coal Mined Soils?

Cited by 6 publications

References 37 publications

Physical soil properties after seven years of composted tannery-sludge application

Physical soil properties after seven years of composted tannery-sludge application

Education in Ecological Engineering—a Need Whose Time Has Come

Variation in shallow sandy loam porosity under the influence of shallow coal seam mining in north-west China

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