In arid drainage basin, when water resources is shortage ,the lake and watercourse will dry up, sand emerge, as a result, desert and desertification would to be inevitable.

• 在干旱内陆盆地，一旦水资源供给减少，湖盆、河道干涸，泥沙出露，形成沙漠和沙漠化则是必然结果。