Comparison among Soil Taxonomy (2014), WRB (2014), and WRB (2022) Systems on Anthropogenic Soils in Korea

Lee, Dan-Bi; Seo, ByungHwan; Go, WooRi; Cho, SongRae; Sonn, YeonKyu

doi:10.7745/kjssf.2023.56.1.068

Cited by 1 publication

(3 citation statements)

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“…The two soil classification systems, ST and WRB, distinguish soil horizons based on the soil characteristics, such as topography, structure, color, and biogeochemistry, mineralogy, etc., by soil depths, but their classification criteria are somewhat different [11,12]. In particular, exemplary studies on the classification of paddy soil flooded by irrigation long term can be found in very few countries.…”

Section: Proposal For Paddy Soil Classification Accroding To Drainge ...mentioning

confidence: 99%

“…These two classification systems are useful for classifying soil by determining soil characteristics by depth [11]. However, due to differences in the classification criteria, diagnostic horizons, and layer naming, it is difficult to implement mutual studies between the ST and WRB systems [12]. For the WRB, in particular, it is not a hierarchical taxonomy, and each major taxon does not overlap with each other.…”

Section: Introductionmentioning

confidence: 99%

“…Then, the Rural Development Administration (RDA) developed a soil information system using soil database and soil maps accumulated over 40 years of soil surveys across the country, which was digitized and provided to the public online in 2006 [7]. Currently, RDA soil researchers are performing to rework soil classification according to the updated ST and WRB systems, in order to publicize soil classification information globally [2,4,12]. Nevertheless, with the lack of existing classification data and the recent changes in land use and consumption, vegetation, and climate, it is not possible to satisfy most of the classification criteria that conform to the current ST and WRB systems [2,15].…”

Section: Introductionmentioning

confidence: 99%

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Comparison of Soil Taxonomy (2022) and WRB (2022) Systems for Classifying Paddy Soils with Different Drainage Grades in South Korea

Lee

Kim

Sonn

et al. 2023

Land

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Soil classification is the systematic classification of soils based on distinguishing the characteristics of soil, aiding in understanding the properties of soils through soil survey and establishing appropriate strategies for effective soil utilization and management. Globally, the Soil Taxonomy (ST) and the World Reference Base for soil resources (WRB) are widely used for soil classification. However, the two classification systems have differences in criteria, thus exhibiting difficulties in exchanging classification results. In South Korea, soil classification has been steadily implemented to provide useful soil information to farmers for efficient soil management, contributing to the sustainability of paddy lands, but it has not been easy to establish an accurate classification system due to intensive soil management and variation in soil redox conditions. In this study, two paddy soils with different drainage grades, pedon 1 and pedon 2, were classified using the ST and WRB, and based on the comparative results, a classification criterion for paddy soil in Korea was recommended. According to ST, pedon 1 was classified as a coarse loamy, mesic family (the mean annual soil temperature, 11–14 °C) of Anthroaquic Eutrudepts (artificially irrigated, base saturation > 60%), whereas pedon 2 was a coarse loamy, mesic family of Fluvaquentic Endoaquepts (organic carbon content > 0.2%, water-saturated across the soil profile). Based on the WRB, the two soils were categorized as follows: Stagnic Hydragric Anthrosols (Eutric, Loamic, Oxyaquic) (saturated with surface water, subsurface horizon that is wet-field and human-affected) for pedon 1 and Stagnic Gleyic Hydragric Anthrosols (Eutric, Loamic, Oxyaquic) (saturated with surface and ground water, subsurface horizon that is wet-field and human-affected) for pedon 2. Overall, the two classification systems categorized these pedons consistently by judging the soil properties according to depth, but there was a difference in layer classification upon saturation by water across the soil horizons. Poor soil drainage hinders rice growth in paddies due to lowering soil and water temperature and the occurrence of harmful reduction products. In this regard, we proposed a draft of the classification criteria specialized for paddy soils in Korea based on drainage grades. This will contribute to sustainable paddy soil management by accurately classifying paddy soils and providing better soil information to farmers.

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Section: Proposal For Paddy Soil Classification Accroding To Drainge ...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of Soil Taxonomy (2022) and WRB (2022) Systems for Classifying Paddy Soils with Different Drainage Grades in South Korea

Lee

Kim

Sonn

et al. 2023

Land

View full text Add to dashboard Cite

show abstract

Comparison among Soil Taxonomy (2014), WRB (2014), and WRB (2022) Systems on Anthropogenic Soils in Korea

Cited by 1 publication

References 3 publications

Comparison of Soil Taxonomy (2022) and WRB (2022) Systems for Classifying Paddy Soils with Different Drainage Grades in South Korea

Comparison of Soil Taxonomy (2022) and WRB (2022) Systems for Classifying Paddy Soils with Different Drainage Grades in South Korea

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