In an attempt to stop desertification, some groups have changed the way they work with the land. They plant trees to stop erosion, build small barriers to slow water runoff on slopes, and bring food to their animals rather than letting them graze freely. Why would these techniques help stop desertification?

Question

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Trees help to conserve water by preventing evaporation and improving soil water retention. Runoff diversion helps to ensure that water is spread more evenly across the land and does not just create erosion. Changes in grazing patterns help to reduce soil compaction and erosion and allow for the regrowth of vegetation, further increasing water retention in the soil. Thus, all of these techniques help to conserve water and prevent desertification.

In an Attempt to Stop Desertification, Some Groups Have Changed