Spatial Distribution of Soil Moisture Content and Tree Volume Estimation in International Institute of Tropical Agriculture Forest, Ibadan, Nigeria

Alo, Abiodun Akintunde; Agbor, C.F.; Jebiwott, Alice; Temiloluwa, Olubodun

doi:10.4236/gep.2022.108022

Cited by 1 publication

(1 citation statement)

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“…Reforestation has contributed to water availability in the surface layers and root zone (necessary for plant growth). The study carried out by [68] (in south-west Nigeria) revealed strong relationships between tree volume and the soil moisture indices (correlation coefficients vary between 0.75 and 0.91). This study suggests that tree volume can be predicted based on soil moisture content.…”

Section: Comparative Analysis Of the Impact Of Reforestation Overmentioning

confidence: 99%

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

Gore¹,

Aman²,

Kouadio³

et al. 2023

JEP

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The drought recorded in 1970s and 1980s, particularly in the Sahara and Sahel region has greatly affected the population as well as the economies and the eco-systems of this area. In 2007, the African Union launched a Pan-African program, the Great Green Wall for the Sahara, the Sahel Initiative (GGWSSI) to reverse land degradation and desertification by planting a wall of trees stretching from Dakar to Djibouti. The objective is to improve food security, and support local people to adapt to climate change. This paper aims to evaluate the impacts of the reforestation program in Senegal, fifteen years after it was launched. This study uses a time series of satellite-derived vegetation cover and climatic parameters data to analyze the sustainability of these interventions. Change detection approaches were applied to identify and characterize the drives of the eventual changes. A comparative analysis of reforestation on climatic parameters was explored through the temporal analysis of the vegetation index over the periods 2000-2008 and 2009-2020. An increase in vegetation activity was noted through the NDVI at the interannual (+2% to +8%) and seasonal (+1.5% to 7% for the wet season and 1% to 4% for the dry season) scale and a positive and significant evolution is noted on the trace of the GGW. Also, the period 2009-2020 recorded an increase in rainfall of 2% to 8% of the average value 2000-2020 and 4% to 8% of the rainy season. Soil moisture is the climatic parameter that has increased the most, with an increase of 25% to 54% of the 2000-2020 average, i.e. between 20 mm and 70 mm more.This study shows a significant improvement in the relationship between NDVI and climate parameters after the different reforestation actions of the GGW.

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Section: Comparative Analysis Of the Impact Of Reforestation Overmentioning

confidence: 99%