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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: —  ·  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 (Soil Type) List II (Salient Characteristic)
A. Entisols 1. Soils having weakly or quickly developed horizons
B. Inceptisols 2. Weakly developed soils with no horizons
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 ?