Ethiopia is one of the eight fundamental and independent centres of origin for cultivated plants in the world. However, deforestation is a major concern for Ethiopia as studies suggest loss of forest contributes to soil erosion, loss of nutrients in the soil, loss of animal habitats, and reduction in biodiversity. At the beginning of the 20th century, around 420,000 km2 (or 35%) of Ethiopia's land was covered by trees, but recent research indicates that forest cover is now approximately 11.9% of the area. The country had a 2018 Forest Landscape Integrity Index mean score of 7.16/10, ranking it 50th globally out of 172 countries.