Land-Use Change on Soil C and N Stocks in the Humid Savannah Agro-Ecological Zone of Ghana

Awoonor, Johnny Kofi; Adiyah, Fowzia; Dogbey, Bright Fafali

doi:10.4236/jep.2022.131003

Cited by 6 publications

(4 citation statements)

References 118 publications

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“…The coefficient of multiple determination (R2) indicated that 36.9% of the changes in carbon stock was accounted for by the combination of the above set of tree components. Similar result was reported by Iglesias et al [54] where a direct relationship was reported between canopy cover percentage and carbon storage. Information on the significance of the predictor variables indicated that carbon stock was not principally influenced by the tree components.…”

Section: Influence Of Tree Characteristics On Carbon Stock Dynamicssupporting

confidence: 91%

Green Innovation, Carbon Storage and Perceived environmental quality in Lagos State University, Nigeria

Ogundele,

Olatunji-Bello,

Adeneye

2023

J. Sustainability Perspect.

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A sustainable university has been defined as a higher educational institution that addresses, involves and promotes the minimization of negative environmental, economic, societal, and health effects generated in the use of their resources in order to fulfil its functions of teaching, research, outreach and partnership, and stewardship in ways to help society make the transition to sustainable lifestyles. Earlier studies on green innovations have basically centered on the environmental benefits and were purely descriptive in nature. Several others examined the effect of green innovation on soil organic carbon by comparing street trees of species. The present study would contribute to literature using a mixed research approach to empirically investigate the contributions of green innovation on carbon storage and perceived environmental quality in Lagos State University, Nigeria. Data for the study were obtained by collecting 100 surface (0 – 15cm) soil samples with the aid of a soil auger under campus trees, grasses, ornamental trees and vegetables (Amaranthus and green vegetable farms) across different land uses on campus. Also, data on green characteristics (tree height, tree size, canopy cover, density of herbs, basal cover and herbaceous cover) were measured using different ecological procedures, while 655 questionnaire copies were administered to staff and students to ascertain their perceived environmental quality of green innovation. Data obtained were analyzed using averages, simple percentages, One-Way Analysis of Variance, multiple regression analysis and principal components analysis. The results obtained showed that carbon storage significantly varied among the green innovation components with canopy cover contributing over 55% of carbon storage. The study revealed that canopy cover and tree size substantially contributed in carbon storage with canopy cover being more effective. PCA result identified beautification of LASU (19.8%), flood control (18.8%), promotion of urban ecology (15.8%) and improvement in air quality (9.5%) as the principal dimensions or perceived environmental quality of green innovation. The result further showed that green innovation characteristics have significant relationship with carbon storage. The study shows the importance of campus tree in carbon reduction and recommends the need for universities to give necessary recognition and incorporate these green components in physical planning.

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Section: Influence Of Tree Characteristics On Carbon Stock Dynamicssupporting

confidence: 91%

Green Innovation, Carbon Storage and Perceived environmental quality in Lagos State University, Nigeria

Ogundele,

Olatunji-Bello,

Adeneye

2023

J. Sustainability Perspect.

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“…Chen et al (2000) also reported a reduction in soil C, N and P under pine forest plantation. Similar observations in the decline of soil N and organic C content following deforestation for crop cultivation and grazed pastures have also been reported (Jafarian and Kavian, 2013;Kamau et al, 2017;Awoonor et al, 2022). Soils under natural forest exhibited significantly higher nutrient content than soils under grazed pastures, cypress forest plantation and potato fields possibly from sustained build-up of soil organic matter, which play a key role in maintaining soil's capacity to retain nutrients.…”

Section: Soil Chemical Propertiessupporting

confidence: 79%

Phosphorus Fractions and Arbuscular Mycorrhizal Fungi as Influenced by Forest Conversion in Central Highlands of Kenya

Cheruto,

Karanja,

Kamau

2023

Trop Subtrop Agroecosyst

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Background: Forest conversion to other land use types lead to changes in soil physico-chemical properties and a reduction in soil fertility. Although forest conversion is extensively recognized to alter soil properties, the influence on distribution of soil phosphorus (P) fractions and abundance and diversity of soil biota is not well explored. Objective: To assess the effects of converting undisturbed natural forest to plantation forest (cypress), grazed pastures and potato fields on soil phosphorus (P) fractions and abundance and diversity of arbuscular mycorrhizal fungi (AMF) in Nyandarua County, Kenya. Methodology: Transects laid out in triplicate were established in each land use type. In potato fields and grazed pastures, transects measured 50 m with three sampling points established 15 m apart along each transect, each point measuring 1 m² divided into 25 grids with each grid being 400 cm². Transect length was increased to 150 m in forest sites due to relatively larger size of the area studied and sampling points were placed at 50 m apart, each point measuring 25 m² and divided into 1² m grids. Soil and plant samples were randomly collected from sampling points and were used to determine chemical properties, soil P fractions and AMF spore examination. Data were analyzed by analysis of variance (ANOVA). Results: Soil chemical properties were significantly (p<0.001) higher in natural forest compared to potato fields, grazed pasture and cypress forest. On the contrary, readily labile and moderately labile P was higher in fields cultivated with potato (125.3 mg and 258.2 mg P kg-1, respectively) than in natural forest (51.1 mg and 95.3 mg P kg-1) and cypress forest (36.4 mg and 82.7 mg P kg-1, respectively). However, non-labile P was higher in natural forest (599.1 mg P kg-1) and lower in cypress forest (251.3 mg kg-1). Of the ten AMF genera identified, only Glomus and Acaulospora were significantly (p<0.01) affected by land use change, where they were more abundant in fields cultivated with potato than the other three land use types. Land use type did not significantly influence diversity and richness in AMF. However, AMF composition varied across the land use types. Implication: Land use change may negatively affect soil chemical properties, enhance redistribution of soil P, and change AMF community composition, and this could have long-term implications on soil fertility. Conclusion: Land use change from natural ecosystems to croplands, grazed pastures and tree plantations alter soil chemical properties, AMF composition and spore abundance, and redistribute soil P fractions by increasing labile P and reducing non-labile P fractions showing that the type of land use chosen significantly influence soil physical and chemical properties and soil biodiversity.

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“…The adsorption of SOC to clay and silt particles is crucial in enhancing SOC's stability. Awoonor et al (2022) in the study, highlighted that land use, geography, soil characteristics, climate, and the composition of the dominant flora are the main variables regulating and stabilizing soil C and Nitrogen stocks. Alani et al (2017) highlighted that plant type, altitude, precipitation, temperature, soil depth, and texture influenced SOC.…”

Section: Factors Affecting Soil Carbon Poolmentioning

confidence: 97%

A Review on Soil Carbon Sequestration in Different Land Use and Land Cover

Prakash¹,

Shimrah²

2023

EEC

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Decomposing organic matter and soil are crucial components of the global carbon cycle in terrestrial environments where carbon is stored in living biomass. Carbon is transferred between these systems and the atmosphere through photosynthesis, respiration, decomposition, and combustion. Human activities alter the carbon stocks in these pools by altering the land use patterns of the region. Hence, soils are both carbon sources and sink with great potential to reduce climate change. In the significant terrestrial carbon sink, soil holds twice as much carbon as the atmosphere and vegetation combined. After being the primary terrestrial carbon storage of the planet, even so, there is strong evidence that over the past several decades, significant amounts of carbon have been lost from soils of natural and agricultural ecosystems due to erosion, leaching, and enhanced soil respiration. Therefore, even a minor change will significantly affect soil carbon sequestration, the global carbon cycle, and climate change. The dynamics of soil organic carbon are strongly influenced by land use management; however, the impact varies depending on the climate, soils, and management techniques. Thus, a thorough understanding of soil organic carbon pool changes and their fractions is required to minimize carbon emissions and implement effective land use planning for sustainable soil management. This paper reviews the literature on carbon sequestration in soil and the effects of land use conversions on soil carbon stocks.

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Land-Use Change on Soil C and N Stocks in the Humid Savannah Agro-Ecological Zone of Ghana

Cited by 6 publications

References 118 publications

Green Innovation, Carbon Storage and Perceived environmental quality in Lagos State University, Nigeria

Green Innovation, Carbon Storage and Perceived environmental quality in Lagos State University, Nigeria

Phosphorus Fractions and Arbuscular Mycorrhizal Fungi as Influenced by Forest Conversion in Central Highlands of Kenya

A Review on Soil Carbon Sequestration in Different Land Use and Land Cover

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