Restoring Sahelian landscapes with people and plants: insights from large-scale interventions

摘要

Combining traditional knowledge on native plant species with scientific plant expertise has been established as a critical factor to improve success of restoration interventions, yet evidence on its incorporation across large scales and in Africa, is scant. Even less known are the effective socio-economic benefits that communities have reaped from restoration activities. This article builds on Sacande and Berrahmouni’s paper, further supported by both socio-economic and biophysical data from large-scale restoration activities in Senegal, Niger, and Nigeria in support of Africa’s Great Green Wall. In total, over 90,000 village households were involved and 56,000 ha of degraded lands planted in 10 countries across the Sahel to initiate restoration in 5 years. Key findings suggest not only ecological benefits, but improvements in livelihoods and health, critical factors underpinning restoration success in the drylands. Results show the profound role native plants and other non-timber forest products play in the lives and livelihoods of dryland communities. Between 2016 and 2020, 120 tons of seeds were collected from over 110 native plant species and planted in 10 countries, with ecological and economic benefits. Perceived food insecurity significantly decreased in 2020 compared to 2016 observations, declining sharply from 46 to 15% in project sites in Senegal, from 69 to 58% in Niger, and 90 to 25% in Nigeria. In Niger and Senegal, communities generated revenues from fodder species alone of 40 USD/ha per year. The UN decade for Ecosystem restoration 2021–2030 will be an important platform to expand such climate change adaptation and mitigation programs.