Comment les aires protégées structurent les écosystèmes des périphéries

Benoudjita, Ngaryam; Ignassou, Alain Djinet

doi:10.4314/ijbcs.v11i5.22

Cited by 9 publications

(7 citation statements)

References 7 publications

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“…consisting of croplands and fallows which in 2013 occupy respectively 40% and 28% of the total surface area. These results are similar to those found by Avakoudjo et al (2014) and Benoudjita & Djinet (2017) Deforestation and degradation of FCDK is clearly perceptible between 1972 and 1999. This brutal land cover change is a result of migration to the south of the country of civil servants who fled the civil war in years 1970 and converted into farmers and breeders.…”

Section: Searchsupporting

confidence: 90%

“…Indeed from 1955 the year of classification until 2008, no effective protection measures were taken to conserve the resources of this forest. Similar drivers of degradation have also been observed by Saradoum (2012), Avakoudjo et al (2014) and Benoudjita & Djinet (2017) in Chad and in other West African countries. In Cameroon, Wafo et al (2006) and Momo et al (2018) have found same degradation trends and similar drivers respectively for the Madjam forest reserve in the far north and the Koupa-Matapit gallery forest in the West.…”

Section: Searchsupporting

confidence: 80%

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Spatio-Temporal Dynamic of Land Use and Land Cover in the Classified Forest of Djoli-Kera, South-Eastern, Chad

Temgoua¹,

Allaissem²,

Tchamba³

et al. 2018

OJF

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This study was carried out in the classified forest of Djoli-Kera found in the SouthEastern part of Chad. It aimed to analyze the spatial and temporal dynamics of land cover between 1972 and 2013 and to determine the drivers of vegetation degradation. The databases used were made up of 4 Landsat satellite images (1MSS of 1972, 5TM of 1984, 7ETM+ of 1990 and 2010) and a spot 6 image of 2013, supplemented by field studies. Satellite images were processed using ENVI and ArcGIS software. Interview was used to identify the activities carried out by the local population. In 1972, the classified forest consisted of four types of land cover, the most important of which was open forest (51%), followed by wooded savannah (26%), tree savannah (21%) and sparse vegetation consisting of farms and fallows (2%). Gradually open forest and tree savannah disappeared. In 2013, the main types of land cover were shrub savannah (40%), sparse vegetation (28%), wooded savannah (12%), bare soil (12%) and dwellings (8%). Livestock, agriculture, wood collection and bushfires are perceived by local population as main drivers of forest cover change. Awareness-raising, monitoring and regulation of access to resources must be pursued, but also managers of the classified forest must accompany the local populations in the planting of trees and the setting up of more efficient farming systems to reduce pressure on the forest's resources.

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Section: Searchsupporting

confidence: 90%

Section: Searchsupporting

confidence: 80%

Spatio-Temporal Dynamic of Land Use and Land Cover in the Classified Forest of Djoli-Kera, South-Eastern, Chad

Temgoua¹,

Allaissem²,

Tchamba³

et al. 2018

OJF

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“…The clear forest particularly recorded a decrease of more than 50% of its surface. These results are similar to those of Temgoua et al (2018b) in the classified forest of Djio-li-Kera in southeast Chad and those of Benoudjita & Ignassou (2017) in and around the W Regional Park of Benin, which showed a continuous regression in forest and savannah at the expense of fallows, crop fields, bare soil and settlements. The search for new arable land to feed a population in perpetual growth could justify the increase over the years of anthropogenic spaces.…”

Section: Dynamics Of Vegetation Cover and Explanatory Factorssupporting

confidence: 85%

Analysis of Spatio-Temporal Dynamics of Land Use in the Bouba Ndjidda National Park and Its Adjacent Zone (North Cameroun)

Djiongo¹,

Desrochers²,

Avana³

et al. 2020

OJF

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We evaluated the dynamics of land use in the Bouba Ndjidda National Park (BNNP) and adjacent areas, in northern Cameroon. Using a maximum likelihood supervised classification of satellite images from 1990 to 2016, coupled with field and a socio-economic survey, we performed a robust land-use classification. Between 1990 and 2016, the area included eight classes of land use, with the largest in 1990 being the woody savannah (42.9%) followed by the gallery forest (20.2%) and the clear forest (16.3%). Between 1990 and 1999, the gallery forest lost 64.8% of its area mostly to the benefit of woody savannahs. Between 1999 and 2016, the largest loss of area was that of the clear forest, which decreased generally by 43.2% in favor of woody savannah. Rates of increase of crop field areas were 59.6% and 78.8% respectively for the periods of 1990 to 1999 and 1999 to 2016 to the detriment of woody savannahs. We attribute the changes in land use observed mainly to the increasing human population and associated agriculture, overgrazing, fuelwood harvesting and bush fires. The exploitation of non-timber forest products and climatic factors may also have changed the vegetation cover. We recommend the implementation of farming techniques with low impact on the environment such as agroforestry.

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“…The same result were obtained by (Djiongo et al, 2020) in the Bouba Ndjidda National Park who reported a regression in natural plant formations by 13.4% in 26 years at the expense of anthropogenic activities such as crop fields, bare soil, and infrastructure. These results are also similar to those of (Temgoua et al, 2018b) in the classified forest of Djio-li-Kera in southeast Chad and those (Benoudjita & Ignassou, 2017) in and around the W Regional Park of Benin, which shows a continuous regression in forest and savannah at the expense of fallows, crop fields, bare soil and settlements. Report by (Temgoua et al, 2018a) progressively.…”

Section: Dynamics Of Land Use/land Cover Changesupporting

confidence: 86%

Dynamics of Land Use and the Evolution of Agroforestry Practices in the Dja Biosphere Reserve (DBR) Southeast Cameroon

Munjeb¹,

Louise²,

Nfor³

et al. 2020

GEP

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The study had as objective to investigate the land use/land cover change from 1980 to 2019 in the Dja Biosphere Reserve using GIS and remote sensing techniques and the evolution of agroforestry practices. Semi structured questionnaires were administered to 320 farmers who were randomly selected from 35 villages of the Dja Biosphere Reserve characterized by the presence of agroforestry systems. The land use map revealed six classes which were dense humid forest, perennial crop-based agroforestry practices, river, wetland, built up and bare areas. Between 1980 and 2008, dense humid forest lost −4.9% of its area to the benefits of perennial crop-based agroforestry practices, built up and bare land. Between 2008 and 2019, dense humid forest gain 1.77% of its area due to increase in perennial crop-based agroforestry practices and a subsequent increase in vegetation cover. Perennial crop-based agroforestry practices and built up increase progressively from 1980 to 2019. Farmers perceived hunting (36.3%), slash and burn agriculture (43.3%) and harvesting of tree-based products (20.3%) as the anthropogenic activities impacting the reserve negatively. The evolution of agroforestry practices were observed on the field, but the precise area under agroforestry practices in the study area need to be estimated. As a mitigation strategy to livelihood needs as well as the rehabilitation of degraded land, the conversion of pure cultivated agricultural land into agroforestry is a major opportunity.

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Comment les aires protégées structurent les écosystèmes des périphéries

Cited by 9 publications

References 7 publications

Spatio-Temporal Dynamic of Land Use and Land Cover in the Classified Forest of Djoli-Kera, South-Eastern, Chad

Spatio-Temporal Dynamic of Land Use and Land Cover in the Classified Forest of Djoli-Kera, South-Eastern, Chad

Analysis of Spatio-Temporal Dynamics of Land Use in the Bouba Ndjidda National Park and Its Adjacent Zone (North Cameroun)

Dynamics of Land Use and the Evolution of Agroforestry Practices in the Dja Biosphere Reserve (DBR) Southeast Cameroon

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