Recently, sand-dust phenomenon happened frequently in hilly-gully area, which produced enormous effect on the production and development of the people in Beijing, Hebei and Tianjin area.

• 河北省黄土丘陵区近几年的沙尘天气频繁发生给当地及京津冀地区人民的生产、生活和社会发展造成了巨大影响。