Reference benchmarks relating to great groups of genetic soil classification of China with soil taxonomy

2004 ◽  
Vol 49 (14) ◽  
pp. 1507 ◽  
Author(s):  
Xuezheng SHI
Keyword(s):  
Soil Classification ◽  
Soil Taxonomy

Cross-Reference System for Translating Between Genetic Soil Classification of China and Soil Taxonomy

2006 ◽  
Vol 70 (1) ◽  
pp. 78-83 ◽  
Author(s):  
X. Z. Shi ◽  
D. S. Yu ◽  
E. D. Warner ◽  
W. X. Sun ◽  
G. W. Petersen ◽  
...  
Keyword(s):  
Reference System ◽  
Soil Classification ◽  
Soil Taxonomy ◽  
Cross Reference

scholarly journals Effects of agriculture on the classification of Black soils in the Midwestern United States

2012 ◽  
Vol 92 (3) ◽  
pp. 403-411 ◽  
Author(s):  
Jessica J. Veenstra ◽  
C. Lee Burras
Keyword(s):  
United States ◽  
Agricultural Land ◽  
Laboratory Data ◽  
Soil Classification ◽  
Current Data ◽  
Soil Survey ◽  
Soil Taxonomy ◽  
Midwestern United States ◽  
Reference Base

Veenstra, J. J. and Burras, C. L. 2012. Effects of agriculture on the classification of Black soils in the Midwestern United States. Can. J. Soil Sci. 92: 403–411. Soil surveys are generally treated as static documents. Many soil survey users assume that pedon data generated 30 to 50 yr ago still represents today's soil, as short-term changes in soil properties are perceived to be limited to the soil surface and thus pedologically insignificant. In this study, we re-sampled and re-analyzed 82 pedons with historical descriptions and laboratory data in Iowa, United States, to evaluate changes in soil profile properties and taxonomic classification after approximately 50 yr of agricultural land use. Using historical and current data, we classified sampled pedons using Canadian Soil Taxonomy, US Soil Taxonomy and the Food and Agriculture Association World Reference Base (FAO-WRB). Our results show that soil characteristics have changed significantly enough to change the classification. In each taxonomic system, the classification of 60% or more of the sampled pedons differed from the original. Classification of 15 to 32% of the sampled pedons changed at the Order (or equivalent) level with 11 to 33% of the pedons originally classified as Black soils – Mollisols, Chernozems or Phaeozems – no longer classified as Black soils. The change in soil classification over such a short-time period challenges the validity and usefulness of treating existing soil maps as static documents as well as traditional soil classification hierarchies.

scholarly journals Mapping and classification of a 100 hectare land at uzanu community, Edo state, Nigeria.

2020 ◽  
pp. 31-39
Author(s):  
Lucky Agbogun ◽  
Umweni A.S. ◽  
Kadiri O.H ◽  
Faith Okunsebor
Keyword(s):  
Soil Classification ◽  
Research Area ◽  
Soil Samples ◽  
Soil Survey ◽  
Survey Method ◽  
Soil Taxonomy ◽  
Mapping Unit ◽  
Mapping Process ◽  
Edo State

This study was carried out at Uzanu Community in Etsako East Local Government Area of Edo State to identify some of the major soils of the project area, through a soil mapping process. The methodology involved mapping of the soils of a 100 hectare land using the rigid grid soil survey method at a detailed scale. Four mapping units were delineated from the ten transects of 100 m apart and 100 m interval examination points along transects which gave a total of 84 auger points. Four representative pedons were sunk, described and sampled. Soil samples were analyzed using standard methods. Soils were classified according to USDA soil taxonomy System of Soil Classification. Series classification was locally defined using guidelines provided by Smyth and Montgomery. The results showed that Pedon 1 representing a mapping unit with area coverage of 14.2 hectares or 14.2 % of the entire research area was classified as Loamy Isohyperthermic Typic Plinthudult and locally as Origo series. The soils of mapping unit two, covering an area of 13.2 hectares or 13.2 % were classified as Loamy Isohyperthermic Ruptic-Ultic-Dystrudept and locally as Origo series. Pedon three soils, covering an area of 38 hectares or 38 % were classified as Loamy Isohyperthermic Typic Plinthudult and locally as Origo series while the soils of mapping unit four represented by pedon four, covering an area of 34.7 hectares or 34.7 % were classified as Coarse Loamy Isohyperthermic Ruptic-Ultic-Dystrudept and locally as Ekiti series.

scholarly journals Properties and classification of heavily eroded post-chernozem soils in Proszowice Plateau (southern Poland)

2019 ◽  
Vol 70 (3) ◽  
pp. 225-233
Author(s):  
Marek Drewnik ◽  
Marcin Żyła
Keyword(s):  
Soil Classification ◽  
Parent Material ◽  
Carbonate Content ◽  
Soil Taxonomy ◽  
High Productivity ◽  
Erosion Processes ◽  
Chernozem Soils ◽  
Material Texture ◽  
Strong Erosion

Abstract The morphology and properties of heavily eroded soils found in chernozems in the upland landscape of the Proszowice Plateau (southern part of Poland) was presented. The issue of classification of these soils was also discussed. Taking into account the terrain context, it should have been assumed that these soils were formed as a result of strong erosion (truncation) of chernozems. These (post-chernozem) soils were relatively young, in which only the development of humus horizon can be documented. However, the accumulation of humus was hampered by constantly intense erosion processes. Evidence of the occurrence of the illuviation process as well as formation of cambic horizon is not visible macroscopically and microscopically. These soils are often classified as weakly developed soils though despite the poor development of the soil profile, they are characterized by potentially high productivity, which results both from the properties of their parent material (texture, porosity) and from their youthfulness (carbonate content both in fine earths and in nodules, high pH in whole profile). Therefore, the name proposed in Polish Soil Classification, 6th edition (‘pararędzina’) seems to be justified. These soils would be classified as Entisols according to USDA Soil Taxonomy and as Regosols according to WRB.

A WebGIS system for relating genetic soil classification of China to soil taxonomy

2010 ◽  
Vol 36 (6) ◽  
pp. 768-775 ◽  
Author(s):  
Xuezheng Shi ◽  
Guoxiang Yang ◽  
Dongsheng Yu ◽  
Shengxiang Xu ◽  
Eric D. Warner ◽  
...  
Keyword(s):  
Soil Classification ◽  
Soil Taxonomy

scholarly journals Grey forest soils in the different classification systems

2017 ◽  
pp. 120-134
Author(s):  
Halyna Ivanyuk
Keyword(s):  
Forest Soils ◽  
Soil Classification ◽  
Classification Systems ◽  
Soil Taxonomy ◽  
Podzolic Soils ◽  
Urgent Task ◽  
The World ◽  
History Of ◽  
Diagnostic Horizons

According to various data, the area of grey forest soils in the world is 94–120.2 million ha, in Ukraine – 4.7–5.5 million ha (about 9 % of the country’s territory). The diversity of conditions for the formation of these soils, discussions about their genesis are the causes of different approaches to the classification of grey forest soils. The history of the classification of grey forest soils is analysed; the most common variants of their classification in Ukraine are presented. Seeking to find approximate equivalents, an attempt to find grey forest soils in the classification systems of different countries (Russia, Moldova, Bulgaria, Romania, Czech Republic, Poland, USA, Canada), as well as in the legend of the FAO-UNESCO map and the WRB has been made. To establish exact analogues of soils practically it is impossible due to different principles of classification’s construction. Modern soil classifications of different countries are as close as possible to WRB and “Soil Taxonomy”. The following names of grey forest soils are identified as the most grounded: light grey forest, grey forest and dark grey podzolic. The following equivalents of the WRB nomenclature (2014) for sub-types of grey forest soils are offered: light grey forest – Albic Luvisols, grey forest – Haplic Luvisols, dark grey podzolic – Luvic Greyzemic Phaeozems. To the names of analogues of these soils with gleyic properties, the qualifier “Gleyic” should be added before the name of the reference soil group. The urgent task for soil scientists of Ukraine is to create a new soil classification that would preserve the acquisitions of genetic soil science but took into account the world trends: the allocation of diagnostic horizons and features that have clearly defined quantitative boundaries. In the new classification, it is proposed to combine the light grey and grey forest soils by a separate group, dark grey podzolic soils to be grouped together in a group with podzolic chernozems. The need for such selection is confirmed by the study of the dark grey soils position in different classification systems of the world, most of which these soils are in the chernozemic type group (Mollisols, Phaeozems and Chernozems). Key words: classification, grey forest soils, Greyzems, Luvisols, Mollisols, Phaeozems.

scholarly journals Appropriate classification of three Swedish soils for agrarian and environmental management

2008 ◽  
Vol 13 (4) ◽  
pp. 378 ◽  
Author(s):  
L. SLÅNBERG ◽  
L. HYLANDER
Keyword(s):  
Environmental Management ◽  
Soil Classification ◽  
Classification Systems ◽  
Environmental Concerns ◽  
Arable Soils ◽  
Soil Taxonomy ◽  
Reference Base ◽  
World Reference Base ◽  
High Base

Classification of soils according to internationally agreed criteria forms a valuable base for scientifi c and political analyses. The objectives of this study were to evaluate two soil classification systems and relate them to agricultural and environmental concerns, principally phosphorus leakage, by classifying three Swedish, arable soils. The Bjärröd soil was classifi ed as a Rupti-Endogleyic Phaeozem according to the World Reference Base for Soil Resources and as a coarse-loamy, mesic Oxiaquic Hapludoll according to the Soil Taxonomy. Bjelkesta was classified as an Orthieutric Gleysol and a fi ne, frigid, Typic Endoaquept, respectively, and Götala as a Haplic Arenosol and a frigid Typic Udipsamment. We evaluated some changes to the classification systems proposed by Nordic scientists and found the classification of Bjärröd misleading and suggest it being classified as a Cambisol/Inceptisol and that information of the characteristically high base saturation in Bjelkesta and the spodic character in Götala being included in their names. This information is useful for decisions regarding agrarian and environmental management of the soils.;

scholarly journals Soil Classification of Anthropogenic Soils in a Remodeled Area Using Soil Taxonomy and World Reference Base for Soil Resources

2013 ◽  
Vol 46 (6) ◽  
pp. 536-541 ◽  
Author(s):  
Seung-Been Lee ◽  
Hyen-Chung Chun ◽  
Hyun-Jun Cho ◽  
Byung-Keun Hyun ◽  
Kwan-Cheol Song ◽  
...  
Keyword(s):  
Soil Classification ◽  
Soil Taxonomy ◽  
Anthropogenic Soils ◽  
Soil Resources ◽  
Reference Base ◽  
World Reference Base

scholarly journals Characterization and Classification of Soils from Different Topographic Positions under Sugarcane Plantation in South Sulawesi, Indonesia

2019 ◽  
Vol 24 (2) ◽  
pp. 93
Author(s):  
Risma Neswati ◽  
Christianto Lopulisa ◽  
Ahmad Faudzan Adzima
Keyword(s):  
Soil Formation ◽  
Soil Classification ◽  
Exchange Capacity ◽  
Soil Taxonomy ◽  
South Sulawesi ◽  
Topographic Positions ◽  
Pore Types ◽  
Void Pores ◽  
Basic Cations

The varied topography will influence the soil formation. This study aims to characterize and classify the soil selected on different topography positions of the sugarcane plantation area. The research was conducted in sugarcane plantation area of Camming, District of Bone, South Sulawesi, which was carried out from November 2017 to March 2018. This study used a descriptive method, observation and description of the nine soil profiles at three transects. Each transect consisted of three profiles points located in different positions, consisting of summit, backslope, and valleys. Each horizon soil samples were analyzed for their physical, chemical and micromorphology characteristics in the laboratory. Soil classification system was done by using soil taxonomy to the level of subgroups. The results showed that an average rainfall annual on the research location was 2.200 mm per year. Soil characteristics such as soil solum, cation exchange capacity, and sum of basic cations tended to increase in parts of the valley than in the back and summit. The primary mineral from the sand fraction included quartz, calcite, biotite, opaque, and orthoclase found especially in the position of the back and valley. The pore types consisted of vugh and packing void pores. Pedofeature type of soil was generally in the form of concretions and nodules that showed the process of oxidation and reduction. The soil type in the study area was classified into Typic Haplustepts and Typic Haplustalf.

scholarly journals Characterization and classification of two soils derived from basic rocks in Pernambuco State Coast, Northeast Brazil

2004 ◽  
Vol 61 (6) ◽  
pp. 615-625 ◽  
Author(s):  
Lindomário Barros de Oliveira ◽  
Maria da Graça de Vasconcelos Xavier Ferreira ◽  
Flávio Adriano Marques
Keyword(s):  
Soil Classification ◽  
Tropical Soils ◽  
Soil Horizon ◽  
Soil Taxonomy ◽  
Humid Climate ◽  
Forest Zone ◽  
Prismatic Structure ◽  
Geomorphic Surfaces ◽  
Basic Rocks

Geomorphic surfaces that present soils derived from basic rocks under warm and humid climate are unique scenarios for studying tropical soils. This paper aimed to characterize and classify two pedons derived from basalt at the Atlantic Forest Zone, Pernambuco State, Northeastern coast of Brazil. Two representative pedons (P1 and P2) were selected on a hillslope at the Cabo de Santo Agostinho municipality. Field macromorphological descriptions were carried out and soil horizon were sampled for physical, chemical, mineralogical and micromorphological characterization. The soils were classified, according to the Brazilian System of Soil Classification (and US Soil Taxonomy) as: "Latossolo Vermelho-Amarelo distroférrico argissólico" (Typic Hapludox) (P1) and "Nitossolo Vermelho distroférrico típico" (Rhodic Paleudult) (P2). Pedon 1 differs from Pedon 2 in some aspects. For instance, P1 presents more yellowish colors, absence of clay illuviation, more friable consistence and the prismatic structure undergoes transformation to angular and subangular blocks. Pedon 2 presents ferri-argilans and leptocutans which indicate that vertical and lateral illuviation of clay is an active process in their formation. These chemically poor and mineralogically uniform soils are a result of the high temperature and rainfall of the studied area.

Sign in / Sign up

Export Citation Format

Share Document