Recent Vegetation Cover Dynamics and Climatic Parameters Evolution Study in the Great Green Wall of Senegal

Gore, Bi Tra Olivier; Aman, Angora; Kouadio, Yves K.; Duclos, Ody-Marc

doi:10.4236/jep.2023.144018

Cited by 2 publications

(1 citation statement)

References 46 publications

(39 reference statements)

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“…Thus, NDVI offers information on vegetation status by measuring the difference between these two spectral bands (Pettorelli et al, 2005). A number of reforestation initiatives were evaluated for their effectiveness using the NDVI (Bondur et al, 2022;Gore et al, 2023;Lin et al, 2020).…”

Section: Ndvimentioning

confidence: 99%

Development of Methodology for Monitoring and Assessing the National Greening Program Using Optical and Sar Data

Diwa,

Borlongan,

Tabardillo

et al. 2024

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. Launched primarily to address the growing concern of environmental sustainability and to combat climate change, the National Greening Program (NGP) is the most ambitious reforestation program undertaken in the Philippines. Given the enormous number of resources invested in the program, it is crucial to monitor and assess the effectiveness of this initiative. To do this, the success of the selected NGP site in Zambales Province was evaluated using land cover maps, Normalized Difference Vegetation Index (NDVI) from Sentinel-2 and MODIS, and Radar Vegetation Index (RVI) and Radar Forestation Degradation Index (RFDI) from Sentinel-1 Synthetic Aperture Radar (SAR) images. The index time series were processed in Google Earth Engine cloud computing platform. The findings indicate that the rise in vegetation density shown by the generally increasing trend in the NDVI and RVI was consistent with the increase in vegetation cover indicated by the land cover maps. This work contributes towards the field of environmental monitoring and resource management, with potential applications that extend beyond monitoring and assessment of the NGP and towards dealing with global issues regarding land use and environmental protection.

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Section: Ndvimentioning

confidence: 99%

Development of Methodology for Monitoring and Assessing the National Greening Program Using Optical and Sar Data

Diwa,

Borlongan,

Tabardillo

et al. 2024

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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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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Recent Vegetation Cover Dynamics and Climatic Parameters Evolution Study in the Great Green Wall of Senegal

Cited by 2 publications

References 46 publications

Development of Methodology for Monitoring and Assessing the National Greening Program Using Optical and Sar Data

Development of Methodology for Monitoring and Assessing the National Greening Program Using Optical and Sar Data

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

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