论文部分内容阅读
1 法国的洪灾河流泛滥造成的洪灾是不规则降雨形成的一种自然现象。法国地处温带,大都市不是遭受来自海洋和风细雨的影响,就是遭受来自地中海强烈暴风雨的袭击。再加上沉积盆地、冲积大平原,远古时期的高原,山区地势起伏及地质的多样性,由此而导致洪水频繁,河水泛滥使自然田野受到不同程度的淹没。这种淹没是一种自然调节流量的现象。洪泛区约占法国本土面积2%~
1 Floods in France Floods caused by river flooding are a natural phenomenon of irregular rainfall. France is located in a temperate zone. The metropolises are not exposed to the breeze from the oceans, they are subjected to the intense storm from the Mediterranean Sea. Coupled with the sedimentary basins, the alluvial plains, ancient plateaus, mountainous terrain and geological diversity, resulting in frequent flooding, flooding the natural fields have been flooded to varying degrees. This submergence is a natural phenomenon of flow regulation. Floodplain accounts for about 2% of the French area