2006年3月份,我国北方出现了入春以来的第一次大范围沙尘天气。但是,这次沙尘天气与以往有些不同,黄色的风沙中多了一种白色盐碱,意味着一种比沙尘暴危害更严重的生态杀手——化学尘暴开始侵袭我国北方广大地区。一、化学尘暴的形成和危害化学尘暴又可称为盐碱尘暴,系指沙、尘等固体颗粒物主要来源于盐碱地、盐碱荒漠、干涸的盐碱湖盆河床、退化草地中的盐渍化草地等。影响我国北方地区的盐碱沙尘,主 In March 2006, the first large-scale sand and dust weather in the north of our country occurred since the beginning of spring. However, this dust weather is somewhat different from the past. The addition of a white salt and alkali in the yellow sandstorm means a more serious killer than the dust storms - chemical dust storms have started to hit the vast areas of northern China. First, the formation of chemical dust storms and hazards Chemical dust storms can be called saline-alkali dust storms, refers to the sand, dust and other solid particles mainly from saline-alkali land, saline-alkali desert, dried saline-alkali lake basin, salinization of degraded grassland Grass and so on. Affect the salt and alkali dust in northern China, the Lord