a type of shifting cultivation. when land is cleared by cutting down trees and brush, then leaving them to dry, and burning the “slash”, turning it into a nutrient-rich ash fertilizer. the area is cultivated until the soil becomes infertile, and the process is repeated. has long been practiced, but is unsustainable as more farmers are adopting the practice. causes habitat loss for local creatures, increases likeliness for erosion, and releases pollution and carbon dioxide into the air, contributing to global climate change.