沙漠边缘 · DESERT EDGE
The Moving Edge of the Sahara — Africa · Sahel and Great Green Wall
“非洲绿色长城”设想在萨赫勒打造一条约 8,000 公里的修复带。重点并非一堵字面意义上的树墙，而是修复沙漠、牧场与农田交接的生产性景观。
萨赫勒是过渡带，不是一条线。雨量、牧群与作物年年移动，因此这里的韧性不只是“挡住沙漠”，更是让人们有更多留下来的办法。
The Great Green Wall initiative imagines an 8,000 km restoration belt across the Sahel. The point is not a literal wall of trees; it is to repair working landscapes where desert, pasture and farms meet.
The Sahel is a transition, not a line. Rainfall, herds and crops move year by year, so resilience here is less about stopping a desert and more about giving people more ways to stay.