风沙灾害已成为中国的心腹之患,尤其是我国北方地区属世界四大沙尘暴区之一的中亚沙暴区的一部分、其危害深远。直捣京城。虽然沙尘暴成因复杂,北方地区在“退耕还草还林”、固沙种草、植树造林治理土地荒漠化,改良牧草遏制草场退化之时,京城人也应紧急行动起来,协同作战,保卫自己,保卫北京,保卫中国。首都的沙尘暴、空气污染、植物 Wind-blown disasters have become a henpecific cause for China, especially as part of the sandstorm region of Central Asia, one of the four major sandstorm areas in the world in northern China, which is far-reaching. Straight down the capital. Although the cause of sand-dust storm is complicated, in the north areas, people in Beijing should act in an emergency together to defend themselves and defend Beijing in the process of returning farmland to grassland and grass planting, afforestation and forestation to control desertification of land and improvement of grassland deteriorating grassland degradation. , Defend China. Sandstorms in the capital, air pollution, plants