every time farmers move their cattle to a new grassland area or decide to grow cops,the environment is stressed. farmers use a plot of land for a few years,and then abandon the fields for more productive ground. as soon as they abandon their old farms,the plant roots no longer hold down the soil. then the land management issue.the only way to stop desertification is to help large trees.but others maintain this just uses up valuable water for precious smaller pieces of land.there is no easy solution.