1 美国近几年美国几乎年年发生特大洪灾 ,每次损失数十亿至数百亿美元不等。为了防范洪灾 ,美国政府制定了一系列新的防洪战略和措施 ,并已取得了一定的效果。它们概括起来就是 :加强宣传教育 ,提高公民的防洪意识 ,制定切实可行的法规 ,保护漫滩湿地 ,建立科学的预报系统 ;绿 1 The United States In recent years, the United States has suffered a catastrophic floods of almost every year, with losses of billions to billions of dollars each. In order to prevent floods, the U.S. government has formulated a series of new flood control strategies and measures and has achieved some results. In summary, they are: strengthening publicity and education, raising citizens’ awareness of flood control, formulating practical laws and regulations, protecting floodplain wetlands and establishing a scientific forecasting system; and green