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Q118 (CDS-I/2020) Geography › World Physical Geography › Weathering and erosion Answer Verified

Which one of the following soils is characterized by very high content of organic matter?

Result
Your answer: —  Â·  Correct: B
Explanation

Histosols are the soil order characterized by a very high content of organic matter, typically containing at least 20 to 30% organic matter by weight. These soils are primarily composed of organic materials that accumulate in wetland environments such as bogs, marshes, and swamps [2]. The waterlogged and often acidic conditions in these environments inhibit the decomposition of plant material, leading to the formation of peat [1]. In contrast, Vertisols are defined by high clay content and swelling-shrinking properties, Gelisols are defined by the presence of permafrost, and Spodosols are acidic forest soils characterized by the accumulation of aluminum and iron oxides [3]. Histosols are globally significant for carbon storage, particularly in the Northern Circumpolar Permafrost Zone, where they are often perennially frozen [1].

Sources

  1. [1] https://openknowledge.fao.org/server/api/core/bitstreams/03d6d88c-abd9-4dea-b8f9-8376e38d70f8/content
  2. [2] https://www.lancaster.ac.uk/lec/research/soil-science-knowledge/twelve-soil-orders/
  3. [3] https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/gelisol
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SIMILAR QUESTIONS

CDS-I · 2022 · Q55 Relevance score: 3.80

Match List I with List II and select the correct answer using the code given below the lists : List I List II (Soil Type) (Salient Characteristic) A. Entisols 1. Soils having weakly or quickly developed horizons B. Inceptisols 2. Weakly developed soils with no horizons 1 C. Histosols 3. These soils are very old and highly weathered D. Oxisols 4. These soils have very high quantity of organic matter in the upper layers Code : A B C D

CDS-II · 2019 · Q40 Relevance score: 3.08

Match List-1 with List-11 and select the correct answer using the code given below the lists: List-I (soil type) I. OxisOLS II. Vertisols III. Histosols IV. Entisols List-11 (Major Chanrdelistiral 1 Very rids in organic matter2 2 Soil lacking horizons 3 Very old and highly weathe- red 4 Rich in day content and highly basic Code: I II III IV

CDS-I · 2017 · Q40 Relevance score: 1.95

Which one of the following with regard to Aridisol, one of the soil orders, is not correct?

IAS · 2018 · Q82 Relevance score: 1.29

With reference to agricultural soils, consider the following statements : 1. A high content of organic matter in soil drastically reduces its water holding capacity. 2. Soil does not play any role in the sulphur cycle. 3. Irrigation over a period of time can contribute to the salinization of some agricultural lands. Which of the statements given above is/are correct ?

CDS-II · 2021 · Q66 Relevance score: -1.19

Inceptisols, Entisols, Vertisols and Mollisols are orders of which one of the following ?