近年来发生的突发性自然灾害多数与全球变暖有一定的联系。全球变暖后海平面不断上升,大陆冰雪快速融化,一些沿海城市受到严重威胁。而内陆城市主要面临的灾害有大风、冻害以及地质灾害等,严重影响居民的生命安全,因此,制定相应的防御措施非常有必要。一、自然灾害概述1.概念自然灾害一般是指给人类生存及环境造成威胁或者破坏的自然现象,通常包括沙尘暴及地质灾害等。这些自然灾害的出现与环境破坏有直接联系,人们需要从 In recent years, the majority of sudden natural disasters have some connection with global warming. After the global warming, the sea level keeps rising, the ice and snow on the mainland melt rapidly, and some coastal cities are seriously threatened. However, major disasters in inland cities are gale, frost damage and geological disasters, which seriously affect the lives and safety of residents. Therefore, it is very necessary to formulate appropriate defensive measures. I. Overview of Natural Disasters 1. Concept Natural disasters generally refer to natural phenomena that threaten or destroy human existence and the environment, and usually include dust storms and geological disasters. The emergence of these natural disasters is directly linked to the destruction of the environment and people need it