中文摘要：

针对海水入侵评价和程度划分问题,在分析常规方法利弊的基础上,作者对化学法进行改进,离子价摩尔浓度百分比法。该法根据八大离子的离子价摩尔浓度占总离子价摩尔浓度百分比的不同,分析百分比在时间或空间尺度上的差异来评价海水入侵,划分入侵程度。利用丹东沿海地区某地下井点的时间序列资料,对海水入侵进行分析,并与氯离子法进行比较,该法使环境本底值影响变弊为利,不仅反映海水入侵导致地下水变化规律,而且反映了海水入侵的危害与危害的滞后性。

英文摘要：

Based on introduction of some appraisal seawater intrusion methods,the ionic valence molar concentration percentage method was proposed.By this method,the seawater intrusion degree can be classified according to the different ionic valence molar concentration percentage of eight ions in the total ionic valence molar concentration.As a case study,the time-sequence material of an underground well in seashore area in Dandong was used to appraise the seawater intrusion degree.By comparison with the chlorine ionic method,this method can take the advantage of environmental background values.It can be used to reflect not only the changing law of underground water affected by seawater intrusion,but also the harm of seawater intrusion and the lag of the harm.