Mineral and geochemical characterization of a leptic aluandic soil and a thapto aluandic-ferralsol developed on trachytes in Mount Bambouto (Cameroon volcanic line)

Tixier, Paul; Fritsch, Emmanuel; Hodson, Mark E.; Lucas, Yves; Bitom, Dieudonné; Paul, Bernard

doi:10.1016/j.geoderma.2009.05.029

Cited by 21 publications

(14 citation statements)

References 27 publications

(37 reference statements)

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“…Also, Al toxicity was higher for the surface horizons than for the bottom ones. The availability of Phosphorus is often low in the presence of free Al and Fe through binding of P, Al and Fe [46] carbon content in mountainous ecosystem might be related to an earlier release of amorphous compounds such as allophane and ferrihydrite which have a strong stabilizing effect on organic compounds [19] [20] [54]. Soil clay content has a strong influence on soil's ability to store and amass soil OC as the latter is stabilized through the formation of clay-humic complex [55].…”

Section: Soil Physico-chemical Propertiesmentioning

confidence: 99%

Soil Properties and Land Capability Evaluation in a Mountainous Ecosystem of North-West Cameroon

Tamfuh¹,

Temgoua²,

Wotchoko³

et al. 2018

GEP

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Up to date, tropical mountainous ecosystems still lack in depth information on soil and environmental characteristics which are major factors limiting optimum crop production. The objective of this work was to study soil characteristics and to evaluate the land capability level for the production of some common tropical crops in mountainous ecosystem soils of North West Cameroon. Soil sampling was done following a randomized complete block design (RCBD) with four replications for three topographic positions (upslope, midslope and footslope) and at two depths (0 -20 cm and 20 -100 cm). It was completed by standard laboratory analyses. The fertility capability classification (FCC) system enabled to identify soil limitations and to classify soils into FCC units. Land and climate were evaluated by simple limitation and parametric methods. Globally, the soils were dark-colored, sandy clayey to clayey, compact and very acidic (pHH 2 O = 4.3 -5.8). The organic matter (3.7% -5.1% dry matter), total nitrogen (0.08% -0.56%) and available phosphorus (22.1 to 30.9 mg·kg −1 ) recorded for the 0 -20 cm depth then reduced with depth but midslope values were also lower. The C/N ratio varied between 9 and 45. Low C/N values appeared mostly in 0 -20 cm depth at the upslope and downslope soils and subsurface soils of midslope position. Exchangeable Ca was very low to low (1.43 -3.6 cmol + kg DOI: 10.4236/gep.2018.67002 16 Journal of Geoscience and Environment Protection was the most relatively concentrated base in all the soils. There was a clear variation of most of the soil properties along the slope and with depth. The soils were classified in the FCC system as aek for the upslope soils, Caek for the midslope soils and Cagk for the footslope soils. The principal limitations to production of huckleberry, beans, maize and potatoes were heavy rainfall, wetness, steep slope, soil texture/structure and low soil fertility. These constraints might be overcome by farming at the end of the raining season, contour ploughing, terracing, fertilization and liming.

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Section: Soil Physico-chemical Propertiesmentioning

confidence: 99%

Soil Properties and Land Capability Evaluation in a Mountainous Ecosystem of North-West Cameroon

Tamfuh¹,

Temgoua²,

Wotchoko³

et al. 2018

GEP

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“…In the topsoil, kaolinite, goethite, gibbsite and organometal complexes are present. Occurrence of gibbsite isolated in the topsoil has been reported in various andosols worldwide [6,[28][29][30][31]. It was largely attributed to localised desilication of kaolinitic minerals during intense leaching in highly acid milieu under perudic conditions.…”

Section: Discussionmentioning

confidence: 99%

“…Soil survey of Mount Bambouto, documented soils with andic properties [4] above 1700 m asl that are formed under a wet, humid climate. Several studies related to pedogenesis have been conducted on soils developed from both trachytes [5,6] and basaltic rocks [7] dated between 16 and 4.5 Ma [1,3,8]. These studies showed that Andosols occur on both parent materials.…”

Section: Introductionmentioning

confidence: 99%

“…In old trachytes and basaltic rocks from Mount Bambouto, this weathering commonly results in the formation of stable organometal complexes at the soil surface [6]. They are thus non allophanic Andosols and classify as Aluandic Andosols (leptic) based on the WRB system of soil classification [4].…”

Section: Introductionmentioning

confidence: 99%

“…This finding brought up a question about the andosolization process in Mount Bambouto, and the source of Al (and Fe) involved in the formation of organometal complexes in topsoil is also questioned. Al-though it is well-known that the physico-chemical composition of the parent rock is one of the main factor controlling andosolization, Tematio et al [6] mentioned that Al and Fe involved in organometal complexes in Mount Bambouto may originate from partial hydrolysis of secondary minerals (halloysite and iron oxides) due to high microbial activities [14] with liberation of metals which bond to organic acids [15]. This explanation is proved to be acceptable for soils derived from old trachyte [15].…”

Section: Introductionmentioning

confidence: 99%

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Andosolization of Soils on a Strombolian Cone at Mount Bambouto, Cameroon

Jiomeneck¹,

Tixier²,

Wilson³

et al. 2011

OJSS

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Behavior and Impact of Zirconium in the Soil–Plant System: Plant Uptake and Phytotoxicity

Shahid

Ferrand

Schreck

et al. 2012

Reviews of Environmental Contamination and Toxicology Volume 221

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Zirconium (Zr) is a transition metal that has both stable and radioactive isotopes.This metal has gained significant attention as a major pollutant of concern, partly because it has been prominent in the debate concerning the growing anthropogenic pressure on the environment. Its numerous past and present uses have induced significant soil and water pollution. Zr is generally considered to have low mobility in soils. The behavior of Zr particularly depends on the characteristics of the media in which it exists, and even its presence in the biosphere as a contaminate may affect its behavior. In this chapter, we describe the relationship between the behavior of Zrand its speciation in soils, its uptake and accumulation by plants, its translocation and toxicity inside plants, and mechanisms by which plants detoxify it.Zr is abundant and occurs naturally in the earth's crust. Zr emissions to the atmosphere are increasing from anthropogenic activities such as its use in industry and nuclear reactors. Zr forms various complexes with soil components, which reduces its soil mobility and phytoavailabilty. The mobility and phytoavailabilty of Zr in soil depend on its speciation and the physicochemical properties of soil that include soil pH, texture, and organic contents. Despite having low soil mobility and phytoavailability,amounts of Zr are absorbed by plants, mainly through the root system and can thereby enter the food chain.After plant uptake, Zr mainly accumulates in root cells. Zr does not have any known essential function in plant or animal metabolism. Although little published data are available, we conclude that the phytotoxicity of Zr is generally low.Notwithstanding, Zr can significantly reduce plant growth and can affect plantenzyme activity. When exposed to Zr-induced toxicity, plants possess numerous defense mechanisms to cope with the toxicity. Such strategies include Zr sequestration in plant roots and activation of various antioxidants. Because Zr may have impact on the biosphere, we believe it deserves to be evaluated in supplementary studies that will enhance the understanding of its behavior in soil-plant systems.

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Mineral and geochemical characterization of a leptic aluandic soil and a thapto aluandic-ferralsol developed on trachytes in Mount Bambouto (Cameroon volcanic line)

Cited by 21 publications

References 27 publications

Soil Properties and Land Capability Evaluation in a Mountainous Ecosystem of North-West Cameroon

Soil Properties and Land Capability Evaluation in a Mountainous Ecosystem of North-West Cameroon

Andosolization of Soils on a Strombolian Cone at Mount Bambouto, Cameroon

Behavior and Impact of Zirconium in the Soil–Plant System: Plant Uptake and Phytotoxicity

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