Deforestation, desert encroachment, climate change and agricultural production in the Sudano-Sahelian Region of Nigeria

Azare, I.M.; Abdullahi, M.S.; Adebayo, A.A.; Dantata, I. J.; Duala, T

doi:10.4314/jasem.v24i1.18

Cited by 22 publications

(17 citation statements)

References 1 publication

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“…Forest is a fundamental, significant and valuable component of the ecosystem that support sustainable agriculture; stabilize soils and climate [1,2]. It regulates water flows, gives shade and shelter, and provides a habitat for pollinators and the natural predators for agricultural pest [3].…”

Section: Introductionmentioning

confidence: 99%

GIS and Remote Sensing Analysis of the Impact of Land use Land Cover Change on Forest Degradation: Evidence from the Central Part of Taraba State, Nigeria

Abba

Taiye

Bakoji

et al. 2021

JGEESI

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Forest is a fundamental, significant, and valuable component of a sustainable environment. Ecosystem services, biodiversity development, and economic growth in any nation depend on the proficient use of forests and their resources. However, deforestation has remained the single most important environmental phenomenon threatening the existence of the forest environment in Nigeria. This study was carried out to assess the exploitation of forestland in the central zone of Taraba state using GIS and remote sensing techniques. The satellite imageries used are Lands at imageries of 2006, 2012, and 2018. Ground Control points (GCPs) were obtained from Google earth to validate the coordinates of the classified imageries. The result obtained from 2006 classification showed that thick forest occupied the total of 1685448.99 ha equivalent to 80.38% and was the highest land cover suffering a decline in the area amounting to 694696 ha which equals to 33.13% in 2018. The pattern of land cover changes at the early stage was restricted to dissection and perforation in 2006. A remarkable expansion of bare land patches accompanied by total attrition of thick forest was identified due North in Bali local government area as compared to Gashaka and Kurmi local governments that have fragmented and little shrinking pattern of changes from 6.87% in 2006 to 37.65% in 2018. This shows that; as bare land increases, thick forests keep on decreasing within thirteen (13) years. It was recommended that increased reforestation efforts, sensitization and periodical campaigns against deforestation, and redesign of the existing forestry laws by the state government to curtail incessant incidents of deforestation in the study area be undertaken.

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Section: Introductionmentioning

confidence: 99%

GIS and Remote Sensing Analysis of the Impact of Land use Land Cover Change on Forest Degradation: Evidence from the Central Part of Taraba State, Nigeria

Abba

Taiye

Bakoji

et al. 2021

JGEESI

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“…1). The total area of the reserve is 1,458 ha which was originally acquired by government under the public lands ordinance of 1975 [17].…”

Section: Study Areamentioning

confidence: 99%

“…The study area is underlain by both Precambrian basement complex rock and the crustaceous sand storm of Bida basin [18] The soil is developed cretaceous sedimentary basement complex, which is sandy alluvium type predominantly shallow soil and low level of organic matter. Hydromorphic soils are dominant in the lowest part of the Effan Stream [17].…”

Section: Figure 1 Map Of the Study Areamentioning

confidence: 99%

Land-use/Land-cover Changes and Deforestation in Effan Forest Reserve, Kwara State, Nigeria

Adeyemi¹,

Fm²

2021

Preprint

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Remote sensing/GIS techniques are a versatile tool for x-raying serial forest structural changes in retrospect. It would be impossible to evaluate past occurrences and changes in forest extents in past decades at Effan Forest Reserve without non-conventional means. Therefore, we adopted remote sensing technology using Landsat images to evaluate land-use change and degradation rates in the area with a view to ascertaining causal factors for possible minimization of forest degradation in Effan Forest Reserve. Land-use/land-cover changes were analyzed using USGS-Landsat TM and ETM images of 1987, 2002, 2014 and 2019. Field-data were collected using handheld GPS receiver and spatial statistical analyses were conducted using the ground control points (GCPs). For inventory data, a systematic sampling technique was adopted using ten 1.05 km-transects at 500 m intervals. A total of 50 sample plots of 50 × 50 m were used. All tree species with Dbh ≥10 cm were enumerated. Nineteen tree species in ten families were encountered with Vitellaria paradoxa as the most-frequently occurring species in the area. IUCN-listed endangered Pterocarpus erinaceus, hitherto abundant in the area, was rarely encountered during the survey, while Vitellaria paradoxa is gradually shrinking, going the relative abundance in the area. The result further showed that primary and secondary forests decreased considerably by 258.03 ha (46.72%) and 9.18 ha (3.63%), respectively, with a total forest loss of 50.3% in 32 years (8.4 hayr-1, 1.6% per annum). While forest plantation size doubled by 369.72 ha within the period. This is worrisome as the remaining fragmented forests appeared to be on the decline, except the riparian vegetation, due to inaccessibility to the riparian by loggers. It thus appeared that forest protection approaches were ineffective. Increased protection efforts could save this forest reserve, and the concerned authority should consider a focused-enrichment planting involving indigenous species for ecosystem-repair.

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“…The Brazilian semiarid region has a great susceptibility to desertification process, due to historical climate conditions (Vieira et al, 2013), intensive land-use and human growing leading to fragilization of the terrestrial ecosystems and soil loss (e.g. Silva et al, 2018;Azare et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Influence of land use and occupation on water quality and on the diatom community of reservoirs in northeast Brazil

et al. 2022

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Historically, the reduction in water quality has been associated with changes in land use, especially changes in urbanization and expansion of agricultural frontiers. The objective of this study was to understand the characteristics of the diatomological community and the use and occupation of the soil around three reservoirs (Arara, Rio do Canto and Araçagi) and natural lagoon (Lagoa do Paó) (Northeast Brazil). Land use was determined using high spatial resolution satellite images. Abiotic variables of water and total phosphorus, organic matter and diatoms in surface sediments were analyzed. Abiotic variables and assemblages of diatoms were analyzed using Principal Component Analysis (PCA). Four types of land use have been identified, associated with anthropogenic change and intensive use of the landscape. The PCA separated the reservoirs by trophic status based on the total phosphorus in the water. 24 taxa of diatoms distributed in 12 genera and 10 families were identified in the sediment. Our results indicate the occurrence of planktonic, epiphytic and benthic diatoms adapted to different trophic gradients

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Deforestation, desert encroachment, climate change and agricultural production in the Sudano-Sahelian Region of Nigeria

Cited by 22 publications

References 1 publication

GIS and Remote Sensing Analysis of the Impact of Land use Land Cover Change on Forest Degradation: Evidence from the Central Part of Taraba State, Nigeria

GIS and Remote Sensing Analysis of the Impact of Land use Land Cover Change on Forest Degradation: Evidence from the Central Part of Taraba State, Nigeria

Land-use/Land-cover Changes and Deforestation in Effan Forest Reserve, Kwara State, Nigeria

Influence of land use and occupation on water quality and on the diatom community of reservoirs in northeast Brazil

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