Which human activity has been linked to soil drying and increased drought risk?

The link between slash and burn agriculture and soil drying, as well as increased drought risk, is rooted in the methods employed in this agricultural practice. Slash and burn agriculture involves clearing land by cutting down and burning plants and trees. This process not only destroys existing vegetation but also releases carbon stored in the biomass and soil into the atmosphere, contributing to climate change.

Moreover, the removal of trees and vegetation reduces the soil's capacity to retain moisture. Without the protective canopy and root systems that hold water, the soil can become more susceptible to erosion and drying. This not only impacts that specific area but can also lead to broader regional climate alterations, exacerbating the conditions that lead to drought.

In contrast, practices such as planting cover crops, rainwater harvesting, and soil conservation methods are designed to enhance soil health, improve water retention, and ultimately mitigate the risks associated with drought.