河北沿海海侵灾害初探

文中以包含海进、海岸侵蚀和海水入侵的广义“海侵”概念,论述河北沿海地区海侵现状及其危害,探讨海侵产生的自然原因和人为活动的影响,在此基础上,评估海侵发展趋势。

TRANSGRESSION DISASTERS ON THE COAST OF HEBEI PROVINCE

The broad sense of transgression includes transgress, coast bank erosion and sea water intrusion. The sea water intrusion under ground on the coastal areas of Heibei Province has taken place mainly in the Haigang (harbour) District of Qinhuangdao city and the coastal areas of Funing county since 1979. The sea water intrusion under ground has covered over 55 4 km 2 and caused enormous local economic losses. The coastal erosion which would decrease the tourist resources has made the famous Beidaihe beaches to be steepened, narrowed and coarsened. The irrational human activities such as excessivly use of the groundwater, as well as the climate changes and hydrogeological factors are firmly believed to be the main factors which lead to the present transgression in the Hebei coastal areas. The forecast that transgression will intensify has been reached based on the synthetical appraisal of the coming climate changes, ground subsidence and the change tendency of water and silt flowing into the sea.