Analysis of the intra-aggregate pore structures in three soil types using X-ray computed tomography

Zhao, Yun‐Duo; Hu, Xia; Li, Xiaoyan

doi:10.1016/j.catena.2020.104622

Cited by 62 publications

(15 citation statements)

References 56 publications

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“…The 3D tomography images acquired from the μ-CT scan were processed and analyzed using the commercial software Avizo, which provides most mainstream functions for image processing and programming interfaces for user-defined operations (Wei et al, 2020;Zhang et al, 2020;Zhao et al, 2020). See Fig.…”

Section: Image Processingmentioning

confidence: 99%

Heterogeneous evolution of pore structure during loess collapse: Insights from X-ray micro-computed tomography

Fan

Dijkstra

et al. 2021

CATENA

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Section: Image Processingmentioning

confidence: 99%

Heterogeneous evolution of pore structure during loess collapse: Insights from X-ray micro-computed tomography

Fan

Dijkstra

et al. 2021

CATENA

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“…The more the amount of organic matter in the soil, the infiltration will increase. The high content of soil organic matter can give the shape of irregular aggregate pores, and this makes the infiltration bigger [9].…”

Section: Erosionmentioning

confidence: 99%

Changes in land cover to reduce erosion and peak discharge of sub-watershed of Danau Limau Manis

et al. 2021

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Land cover change is a strategic issue in the Subwatershed of Danau Limau Manis. The community was triggered by the big earthquake of September 30, 2009, so people moved to the upper watershed. The problem is the increasing number of people, the damage to the watershed ecosystem. This damage can be seen from the erosion of river water and the availability of river water during the rainy season and dry season. An appropriate solution is needed to reduce erosion by modeling land cover. This study aims to determine the value of soil erosion and peak discharge. Erosion using a rational formula using the modified universal soil loss equation model based on land units and peak discharge. The land unit is an overlay of land cover maps, slope maps, and soil maps. Land units that produce erosion and exceed the tolerance limit are carried out with a land cover change scenario using the spatial multi-criteria analysis model. Scenario determination is also based on slope maps, land cover maps, soil maps, river flow density maps, forest area maps, erosion values , and the Padang city spatial plan. The study results explain that the erosion and peak discharge resulting from the existing land cover is quite large, namely 47.89 tons/hectares/year and 152.81 m3/sec. After scenario modeling, erosion decreased by 11.91 tons/hectares/year and peak discharge 15.26 m3/sec.

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“…Elongated pores were essential for root penetration, storage and transportation of soil water and gases, and were defined as transmission pores ranging from 50-500 μm (Obour, Keller, Lamandé, & Munkholm, 2019;Pagliai et al, 2004;Schlüter, Sammartino, & Koestel, 2020). Those transmission pores play a vital role in soil-plant water relationships and maintaining beneficial soil structure (Zhao, Hu, & Li, 2020). However, Dal Ferro et al (2012) reported contrastive effects of management practices that pore shape differed little among different treatments, and irregular shape pores dominated all soil samples.…”

Section: Effects Of Long-term Fertilization On the Morphology Of Soilmentioning

confidence: 99%

Effects of the long‐term fertilization on pore and physicochemical characteristics of loess soil in Northwest China

et al. 2020

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Long-term applications of inorganic and organic fertilizers have great effects on soil characteristics and crop yields. However, it is limited to quantify the influence of long-term fertilization on soil micro-pore structure. In this study, we investigated the effect of long-term fertilizer application on soil pore characteristics using X-ray computed tomography. Loess soil cores were collected from four 25-yr fertilization treatments in Guanzhong Plain, Northwest China, including no fertilization (CK), nitrogen alone (N), nitrogen + phosphorus + potassium (NPK) and organic manure + chemical fertilizer NPK (OMNPK). The results indicated that, compared with other treatments, OMNPK treatment significantly increased winter wheat (Triticum aestivum L.) yield, total porosity, soil organic carbon and total nitrogen, and decreased soil bulk density. Notably, there is greater soil pore connectivity (EuN, Euler number) and lower fractal dimension in OMNPK than other treatments. Pore size distribution showed a significant difference with different diameters in <50, 50-100, 100-1000, and >1000 μm. In contrast, pore shape distribution of soil core differed little among different treatments, while elongated shape pores were appropriately 99.5% at OMNPK with more frequency than other treatments. Co-application of organic and inorganic fertilizers improved soil pore structure and soil physical-chemical properties, which is beneficial for preventing soil degradation.

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Analysis of the intra-aggregate pore structures in three soil types using X-ray computed tomography

Cited by 62 publications

References 56 publications

Heterogeneous evolution of pore structure during loess collapse: Insights from X-ray micro-computed tomography

Heterogeneous evolution of pore structure during loess collapse: Insights from X-ray micro-computed tomography

Changes in land cover to reduce erosion and peak discharge of sub-watershed of Danau Limau Manis

Effects of the long‐term fertilization on pore and physicochemical characteristics of loess soil in Northwest China

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