The pie chart illustrates the main causes of worldwide land degradation and compares their relative contributions. Overall, there are three dominant factors, with over-grazing being the most significant cause, followed by deforestation and over-cultivation.
Over-grazing accounts for the largest proportion of land degradation globally, representing 35% of the total. This indicates that excessive livestock farming places the greatest pressure on land resources, often leading to soil erosion and loss of fertility. The second major contributor is deforestation, which is responsible for 30% of land degradation. Large-scale tree removal reduces soil stability and disrupts ecosystems, making land more vulnerable to degradation. Over-cultivation ranks third, contributing 28% of the total. This suggests that intensive farming practices, such as repeated planting without sufficient soil recovery, also play a substantial role in degrading land quality.
In contrast, other factors collectively make up only 7% of worldwide land degradation, indicating that their impact is relatively minor compared to the main causes. In summary, the chart clearly shows that human agricultural and land-use activities are the primary drivers of global land degradation, with over-grazing being the most critical issue.