Dynamique de l’occupation du sol de la commune de Téssékéré de 1984 à 2015 (Ferlo Nord, Sénégal)

Sylla, Diarra; Ba, Taibou; Diallo, Mariama Dalanda; Mbaye, Tamsir; Diallo, Aly; Peiry, Jean‐Luc; Guisse, Aliou

doi:10.35759/janmplsci.v40-3.2

Cited by 7 publications

(6 citation statements)

References 10 publications

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“…The rainfall deficit on the study areas recorded varies from 11% to 20% and the lost of vegetative activities through the vegetation index is between 4% and 8.5% [17]. These results are in agreement with the works of ( [6] [9] [11] [15] [74]) in the Ferlo region (north of Senegal).…”

Section: Analysis Of the Land Cover Dynamic In The Senegalese Great G...supporting

confidence: 87%

Estimation of the Carbon Sequestration Dynamics of Senegal’s Great Green Wall Based on Land Cover over the Past Three Decades

Gore,

Aman,

Kouadio

et al. 2023

JEP

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The severe drought observed in the Sahel during 1970s, 1980s and 1990s has deeply affected the population as well as the economies and the eco-systems of this climatic area. The GGW Initiative spearheaded by Africa Union in 2007 proposed to combat the land degradation and desertification by planting a wall of trees stretching from Dakar to Djibouti. A reforestation was then conducted in the Senegal's GGW since 2006 as part as other areas in the Sahel. This paper aims to evaluate the carbon sequestration dynamics in the sites of the Senegal's GGW over the last three decades. The method consists firstly of analyzing the evolution of land cover and land use dynamics based on ESA-CCI LC satellite data. There is an improvement of the surface areas of tree and shrub savanna of 11.40% (Tessekere), 8.25% (Syer) and 2.70% (Loughere-Thioly). The regreening of the different localities and a positive dynamic observed is explained by the return to normal rainfall and to reforestation actions, agroforestry practices, better management of natural resources undertaken. However, some non-reforested sites showed an opposite trend despite of the normal rainfall. Secondly, the results on land mapping are used as a proxy for the assessment of carbon stocks. The dynamic observed in vegetation cover since the beginning of the reforestation made it possible to sequester 5.8 million tons of carbon representing respectively 2.31% of African GGW. This gain in stored carbon is equivalent to 21.2 million tons of CO 2 captured in the atmosphere. Through this study, it appears that carbon storage becomes significant 8 to 10 years after the start of reforestation. An urbanization without respect for the environmental factors could be a danger for the climate (case of Ballou).

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Section: Analysis Of the Land Cover Dynamic In The Senegalese Great G...supporting

confidence: 87%

Estimation of the Carbon Sequestration Dynamics of Senegal’s Great Green Wall Based on Land Cover over the Past Three Decades

Gore,

Aman,

Kouadio

et al. 2023

JEP

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“…Today, the oldest plantations in the Senegalese GGW are 14 years old and, for most of them, protection was lifted after nine to 11 years. The study of land use dynamics in the first GGW intervention areas in Senegal showed that forestry areas increased from 0.08% in 1984 to 2.66% in 2015 thanks, at least in part, to the plantations implemented under the program (Sylla et al 2019b). The results of these developments remain, to date, modest because of the low recovery and survival rates of seedlings in the Sahel (Bernardino et al 2020) and, above all, the long growing time of most of the selected Sahelian species (Wade 2020).…”

Section: Acceleration and Timing Of Ecological Restorationmentioning

confidence: 99%

The Great Green Wall in Senegal: questioning the idea of acceleration through the conflicting temporalities of politics and nature among the Sahelian populations

Macia¹,

Allouche²,

Sagna³

et al. 2023

E&S

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In January 2021, the Great Green Wall Accelerator was announced at the third One Planet Summit in Paris. Based on the notion of acceleration developed by Harmut Rosa and using the idea of conflicting temporalities in the study of social-ecological systems, this article analyzes how the political will to accelerate the Great Green Wall reveals power dynamics between Western and Sahelian countries. We put in tension this acceleration of the Great Green Wall with (1) temporalities with respect to nature and reforestation, and (2) temporalities of life among the Sahelian populations. Whereas our contribution is mostly theoretical, building on Hartmut Rosa's work, we illustrate our approach in terms of political ecology and anthropology based on an empirical case study of the Ferlo region in Senegal, a key region with respect to the Great Green Wall initiative. Our analysis shows that by controlling the temporality of the Great Green Wall program through this Accelerator, Western powers dominate the Sahelian states, making the Accelerator part of a neo-colonial approach. Moreover, the desire to accelerate the Great Green Wall with a massive investment in a short span of time corresponds to the perception of a nature made available, incompatible with the time of ecological restoration. Finally, the acceleration advocated by Western economic liberalism seems to be coming up against resistance of local populations rooted in an identity that values community solidarity, the stability of social structures, and closeness between humans, their herds, and nature.

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“…We identified generally allogenic forest succession by means of both natural and anthropogenic events (Dendoncker & Vincke 2020; Vincke et al 2010; Gonzales 1997; Poupon 1980). Drought and human pressure were the primary causes leading to decrease of vegetation cover over nearly 15% of the forested area over a period of 30 years (Sylla et al 2019). Tree population declines were also due to low natural regeneration of many trees species, and a high mortality rate following plantation (FAO 2000).…”

Section: The Restoration Challenge In the Sahel: Temporal Dynamics An...mentioning

confidence: 99%

A review of public versus private reforestation programs in the Senegalese Sahel: taking stock of realities and challenges

Sarr

Diallo

King‐Okumu

2021

Restoration Ecology

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The Great Green Wall (GGW) across the Sahara is expected to generate a wide range of ecological and socioeconomic benefits. Ideally, ecosystem recovery should be assessed using measurable indicators (Society for Ecological Restoration [SER] principal 5). This requires agreement on only a few clear goals and targets and the establishment of effective measurement systems, yet in practice, each stakeholder and funder brings different targets that the GGW must achieve. Alongside its ecological objectives and biodiversity indicators, the GGW must also demonstrate meaningful socioeconomic benefits, engage communities, and contribute to green economic development in the restoration areas. Since the engagement of the private sector is presently seen as a critical challenge, we compare the current GGW approach and performance with that of an established Acacia senegal plantation focusing more narrowly on a commercial objective to produce gum arabic for export. Our analysis of information from both programs demonstrates strengths, weaknesses, opportunities, and threats to the restoration successes achieved. These insights can help to guide ongoing programing and evaluation of the GGW toward both ecological and socioeconomic objectives in Senegal. They also reflect on emerging global discussion of business cases for reinvestment by all stakeholders to halt and reverse ecological damage.

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Dynamique de l’occupation du sol de la commune de Téssékéré de 1984 à 2015 (Ferlo Nord, Sénégal)

Cited by 7 publications

References 10 publications

Estimation of the Carbon Sequestration Dynamics of Senegal’s Great Green Wall Based on Land Cover over the Past Three Decades

Estimation of the Carbon Sequestration Dynamics of Senegal’s Great Green Wall Based on Land Cover over the Past Three Decades

The Great Green Wall in Senegal: questioning the idea of acceleration through the conflicting temporalities of politics and nature among the Sahelian populations

A review of public versus private reforestation programs in the Senegalese Sahel: taking stock of realities and challenges

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