海水入侵与土壤盐渍化现状及生态修复措施研究——以潍坊北部地区为例

Study on the Status of Seawater Intrusion and Soil Salinization and the Ecological Restoration Measures:Taking the Northern Region of Weifang as Example

针对潍坊市北部沿海研究区域,以海水入侵与土壤盐渍化为研究对象,设置了监测断面、站位(监测井),选取了地下水电导率等监测指标对海水入侵程度、土壤盐渍化类型及程度等进行分析研究。2022年监测结果显示,研究区域受到海水入侵影响,且监测站位的海水入侵程度以严重入侵居多;土壤盐渍化类型以硫酸盐类型为主,其占比达73.69%,研究区盐渍化类型及程度整体情况为:轻盐渍化土(47.37%)大于盐土(21.06%)大于中盐渍化土(13.16%)大于非盐渍化土(10.53%)大于重盐渍化土(7.89%),海水入侵与土壤盐渍化趋势具有一致性。总结提出4条生态修复措施,以期为莱州湾沿岸城市及全国海水入侵城市生态修复提供理论思路和实践经验。

The degree of seawater intrusion and the type and degree of soil salinization in the northern coastal area of Weifang are investigated by setting up the monitoring sections and stations(monitoring wells) and selecting the monitoring indicators like groundwater conductivity.The results monitored in 2022 showed that the study area had all been affected by seawater intrusion and the degree of intrusion was mostly severe.The salinization of soil was dominated by sulfate type,making up 73.69%.The overall status of the soil salinization in the study area was in order of decreasing light saline soil(47.37%),saline soil(21.06%),medium saline soil(13.16%),non saline soil(10.53%),heavy saline soil(7.89%).The trend of the seawater intrusion was consistent with that of the soil salinization.Based on the present study,four ecological restoration measures are proposed in order to provide theoretical ideas and practical experiences for the ecological restorations of the coastal cities along the Laizhou Bay and the cities invaded by seawater in China.