How much the marginal lands in Africa?

Africa has a significant amount of marginal lands, which refers to land that has limited potential for agricultural production due to various constraints such as poor soil fertility, erratic rainfall, and harsh climatic conditions. The extent of marginal lands in Africa varies depending on the specific definition and criteria used, but it is estimated to cover substantial portions of the continent's land area.

According to the World Bank, marginal lands in Africa account for approximately 30% of the continent's total land area. However, some estimates suggest that the extent could be even higher, reaching up to 40% or more. These marginal lands are often found in arid and semi-arid regions, as well as in mountainous and degraded areas.

The challenges of cultivating marginal lands include low soil fertility, limited water availability, vulnerability to erosion, and the presence of pests and diseases. As a result, agricultural productivity on marginal lands is often low, and the livelihoods of communities dependent on these areas can be precarious.

Despite the challenges, there have been efforts to improve agricultural productivity on marginal lands in Africa. These efforts include the use of drought-resistant crops, soil conservation techniques, and improved water management practices. However, more comprehensive and sustained investments are needed to address the challenges faced by marginal lands and support the livelihoods of communities in these areas.

It's important to note that the definition and classification of marginal lands can vary depending on the context and specific criteria used. Additionally, the extent and characteristics of marginal lands can also change over time due to factors such as climate change and land degradation.