侵蚀后退 meaning in English

erosional retreat

According to the contrast between different maps and the dynamical conditions , the area of bohe lagoon had reduced by 45 . 3 % from 1932 to 2000 and human activities in the coastal zone , such as inning , sand dredging and aquiculture , have brought great effects on the coastal system , which has accelerated the barrier erosion and lagoon evolvement
通过对比分析， 1932 ~ 2000年，博贺?湖面积减少45 . 3 % ，人类活动已成为影响该区海岸演变的主导因素；滩涂围垦、海岸采沙与水产养殖等人类活动加剧了沙坝海岸的侵蚀后退，且使得?湖面积迅速减少，不断淤浅萎缩，大大加快了海岸体系的演化进程。