Edaphic Component of the Environmental Degradation Resulting From the Replacement of Tropical Rain Forest by Field and Tree Crops in Sw Nigeria

Adejuwon, J. O.; Ekanade, O.

doi:10.1080/01435698.1987.9752828

Cited by 15 publications

(6 citation statements)

References 3 publications

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“…Allen (1985) observed that reduction in CEC was 50% higher in the tropical soils than in temperate soils under deforestation. Adejuwon and Ekanade (1987) also reported the losses of 34%-36% in CEC and 19%-50% in exchangeable Ca 2+ , Mg 2+ , Na + and K + in the tropical region due to deforestation.…”

Section: Exchangeable Bases and Cation Exchange Capacitymentioning

confidence: 93%

Comparative study of some soil properties in forested and deforested areas in Cox’s Bazar and Rangamati Districts, Bangladesh

Zaman

Osman

Haque

2010

Journal of Forestry Research

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The study dealt with the assessment of impact of deforestation on soil through a comparative analysis of soil physicochemical properties of natural forest and deforested areas. Soil samples from three depths (top, middle and bottom) under natural forest and nearby deforested areas were collected to investigate soil properties. Forest soils show no significant change in particle size distribution. Bulk density of forested soils shows the significant differences in top and middle layers. Soil pH in top and middle soil, organic matter in top soil and available phosphorus in middle soil of the forest site are found to be significantly higher than that of the deforested soils. Forest soils also have significantly higher level of exchangeable Ca 2+ , K + in top and middle soil and Mg 2+ at all depth than those of deforested site. Exchangeable Na + and cation exchange capacity (CEC) are observed unchanged in both sites. The results suggest that change in soil properties was more obvious in surface and sub surface portions of both areas. The study shows that deterioration of physicochemical properties occurred due to deforestation.

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Section: Exchangeable Bases and Cation Exchange Capacitymentioning

confidence: 93%

Comparative study of some soil properties in forested and deforested areas in Cox’s Bazar and Rangamati Districts, Bangladesh

Zaman

Osman

Haque

2010

Journal of Forestry Research

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“…Arbuscular Mycorrhizal Fungi (AMF -phylum Glomeromycota) are known to have a key role in terrestrial ecosystems as they contribute to improve plant nutrition, particularly uptake of low mobility nutrients from soil solutions such as P, Zn, and ultimately Cu, to increase plant resistance to drought, salinity and tolerance to pathogens and to improve soil structure [1,2]. However, disturbances can affect several aspects of AMF communities in both agricultural and natural ecosystems through the process of limiting organic inputs into the soil and biomass removal [3,4].…”

Section: Introductionmentioning

confidence: 99%

Diversity of arbuscular mycorrhizal fungi (Glomeromycota) in adjacent areas of different land use in Nepal

Baral¹,

Giri²,

Shah³

et al. 2021

GSC Biol. and Pharm. Sci.

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Disturbances can affect the incidence of Arbuscular Mycorrhizal Fungi (AMF) in both agricultural and natural ecosystems. The present study is a first attempt for the qualitative assessment of AMF diversity in adjacent areas of a forest ecosystem with different land uses and assess levels of mycorrhizal colonization by these fungi. A total of five soil samples were taken randomly from each of the following areas situated within the same landscape: undisturbed coniferous forest (UF), degraded forest (DF) and cultivated land (CL). A total of 22 taxa of arbuscular mycorrhizal fungi belonging to eight genera were identified morphologically, Glomus and Acaulospora being the most common. Species richness ranged from 11-14 among land use areas, with 14 species in UF and 11 species in CL. Acaulospora mellea, Gigaspora sp. and two non-identified Glomus species were detected in all areas. While species richness did not differ significantly amongst areas, diversity at the family level was 43% less in CL than in UF. Mean mycorrhizal colonization was higher in DF (28%) than CL (20%). We concluded that land use mainly affected fungal diversity only at the family level and had no impact on mycorrhizal development in sampled roots. This work provides the first step to identify native AMF species in Nepal that might be cultured for further use by small farmers in a sustainable agriculture approach.

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“…Nutrient losses have been reported as a major challenge in cocoa cultivation. Several researchers found significant declines in soil organic matter and in all major nutrients under cocoa when compared with soils under forest [12][13][14]. Harvesting nutrient-rich biomass and exporting it lead to depletion of soil nutrients or nutritional imbalance affecting the following crop [15].…”

Section: Introductionmentioning

confidence: 99%

Nutrient Stocks and Distribution in Ghanaian Cocoa Ecosystems

Mohammed¹,

Robinson

Verhoef

et al. 2020

International Journal of Agronomy

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There is a paucity of information on nutrient stocks and distribution in the cocoa ecosystem for the management of production sites to improve its productivity. Apart, sites with long histories of cocoa production could differ in nutrient stocks and distribution relative to recent production regions. Therefore, some existing cocoa farms in Ghana were sampled on the basis of shade management (shaded and unshaded) and production site longevity (Eastern region > Western North region) to determine the nutrient stock and distributions in them. Over 93% of the total ecosystems’ elementary nutrients were stored in the soil. Higher nutrient stocks occurred under shaded cocoa ecosystem. Nutrient element concentrations in cocoa tree biomasses followed the order: N > Ca > K > Mg > P > S > Al = Fe > Zn = Mn, and mostly concentrated in leaf > root = husk > branch > stem. On average, region as a main factor affected nutrient distributions. There was a sharp distinction between macronutrient and micronutrient accumulations in favour of Eastern region and Western North region, respectively. Therefore, the regional distinction with respect to macro- and micronutrients could be used as a guide to fertilizer recommendation for cocoa systems in the two regions.

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Edaphic Component of the Environmental Degradation Resulting From the Replacement of Tropical Rain Forest by Field and Tree Crops in Sw Nigeria

Cited by 15 publications

References 3 publications

Comparative study of some soil properties in forested and deforested areas in Cox’s Bazar and Rangamati Districts, Bangladesh

Comparative study of some soil properties in forested and deforested areas in Cox’s Bazar and Rangamati Districts, Bangladesh

Diversity of arbuscular mycorrhizal fungi (Glomeromycota) in adjacent areas of different land use in Nepal

Nutrient Stocks and Distribution in Ghanaian Cocoa Ecosystems

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