曹妃甸吹填区土壤障碍特征研究  

A Study on the Constraining Characteristics of the Dredged Filled Soil in Caofeidian Industrial District

作　　者：郑垒[1,2] 于君宝[1] 王光美[1] 赵秀芳[3] 王振宇[3] 张清[3] 

机构地区：[1]中国科学院海岸带环境过程与生态修复重点实验室(烟台海岸带研究所),山东省海岸带环境过程重点实验室,中国科学院烟台海岸带研究所滨海湿地研究室,山东烟台264003 [2]中国科学院研究生院,北京100049 [3]天津泰达园林建设有限公司,天津300457

出　　处：《土壤通报》2013年第2期455-458,共4页Chinese Journal of Soil Science

基　　金：中国科学院知识创新工程重要方向项目(KZCX2-YW-359);中国科学院院地合作项目"环渤海吹填造陆新生区生态景观快速构建关键技术研究";山东省自然科学杰出青年基金项目(JQ201114)资助

摘　　要：以曹妃甸吹填造陆区域作为研究对象,系统研究了吹填区土壤剖面水分、盐分、EC、碱化度、pH及养分指标状况。结果表明,曹妃甸吹填区土壤盐分分布呈现"表聚型",含盐量均在6 g kg-1以上,为典型的NaCl型盐渍土,土壤的平均碱化度均在40%以上,有机质和氮素含量贫乏。聚盐强碱低养分是曹妃甸吹填区土壤改良和生态建设的主要障碍因子,利用时应注意降盐、降碱和培肥。The characteristics of water conten t, salt content, electric conductivity （EC）, exchangeable sodium percentage （ESP）, pH and nutrients were determined in profiles of the dredger filled soil in the marine reclamation land area of Caofeidian industrial district. The results showed that the dredger filled soil was typical saline soil with NaC1 and the high soil salinity mainly appeared in the surface soil. The salt contents were more than 6 g kg-~, and the average values of ESP were above 40%. The nitrogen and organic carbon contents were deficient seriously in soil. The main constraints for soil improvement and ecological construction in dredger filled area of Caofeidian included high salinity in soil surface, high ESP and shortage of nutrients in soils. We should reduce the salt contents, reduce alkali and increase soil fertility when we improved the soil in the coastal reclamation area by dredgered fill in Caofeidian.

关 键 词：吹填区土壤 填海造陆 含盐量 碱化度 土壤养分 

分 类 号：S156.4[农业科学—土壤学]