海平面上升对中国沿海地区影响初析

近五十年来中国沿岸海平面变化总的呈上升趋势，年变率平均为１．４ｍｍ／ａ，中国沿岸地形复杂，未来海平面上升可能影响的主要脆弱区为黄河、长江和珠江三大三角洲和滨海平原，其可能受害区域估计达３５０００ｋｍ＾２。影响中国沿岸相对海平面上升的主要因素有：近代地壳垂直运动和地面沉降，台风和风暴潮，海岸侵蚀和海咸水入侵等。

THE PRELIMINARY VULNERABILITY ASSESSMENT OF THE CHINESE COASTAL ZONE DUE OT SEA LEVEL RISE

Since recent fifty years the sea level chage along chinese coast has a rising tendency in general, the mean rising rate is 1.4 mm/a. Chinese coastal areas have varied topography. The possible major vulnerable areas due to sea level rise in the future are the Yangtze Delta, the Yellow River Delta, the Pearl River Delta, and some coastal plains. The vulnerable area is totally 35,000 km2. The major factors influenced on relative sea level rise of Chinese coast are recent crustal vertical movement and ground subsidence, typhoons and storm surges, coastal erosion and sea saltwater intrusion.