莱州湾南岸土壤盐渍化与养分特征  

Soil Salinization and Nutrient Characteristics in the Southern Coast of Laizhou Bay

作　　者：姜冰 马健 张德明 李明波 刘阳 范海滨 JIANG Bing;MA Jian;ZHANG Deming;LI Mingbo;LIU Yang;FAN Haibin(Shandong Provincial No.4 Institute of Geological and Mineral Survey,Weifang,Shandong 261021,China;Key Laboratory of Coastal Zone Geological Environment Protection,Shandong Geology and Mineral Exploration and Development Bureau,Weifang,Shandong 261021,China)

机构地区：[1]山东省第四地质矿产勘查院,山东潍坊261021 [2]山东省地质矿产勘查开发局海岸带地质环境保护重点实验室,山东潍坊261021

出　　处：《土壤》2025年第1期187-194,共8页Soils

基　　金：山东省地质矿产勘查开发局地质勘查引领示范与科技攻关项目(KC202207、KY202206)资助。

摘　　要：为研究土壤盐渍化水平对土壤养分指标的影响,以莱州湾南岸为研究区域,通过系统采样测试,获得了212件表层土壤样品的全盐量、pH、全氮、全磷、全钾、有机质等各项指标数据,结合地统计学和地理信息系统技术,采用相关分析、单因素方差分析等方法,探讨了土壤盐渍化对养分特征的影响。结果表明,研究区土壤全盐量均值为0.84%,空间变异性强,总体呈现北高南低的分布特征。土壤pH均值为8.28,主要为碱性土壤。土壤全氮、有机质均值分别为0.52、9.8 g/kg,处于缺乏等级;全磷、全钾均值分别为0.64、17.1 g/kg,处于中等等级。土壤养分综合等级以四等为主,样本数占比64.15%。土壤养分各指标含量互呈显著正相关,表现出较强的空间相关性。土壤养分指标与全盐量均呈显著负相关,除全钾外均与土壤pH呈显著负相关。滨海盐土的养分指标最低。本研究结果可为地区性的土壤改良和开发利用提供科学依据。In order to ascertain the influence of soil salinization level on the nutrient indexes,the southern coast of Laizhou Bay was taken as the research area.Through systematic sampling and testing,soil data of various indicators such as total salt content,pH,total nitrogen,total phosphorus,total potassium,and organic matter were obtained from 212 topsoil samples,and the influences of soil salinization on nutrient characteristics were explored using methods such as correlation analysis and one-way ANOVA,combined with geostatistics and geographic information system technology.The results showed that the average value of soil total salt content was 0.84%,with strong spatial variability,and the overall distribution characteristics were high in north and low in south.The average value of soil pH was 8.28,mainly alkaline soil.The average values of total nitrogen and organic matter were 0.52 g/kg and 9.8 g/kg,respectively,indicating a deficiency level.The average values of total phosphorus and total potassium were 0.64 g/kg and 17.1 g/kg,respectively,indicating a moderate level.The comprehensive grade of soil nutrients was mainly in the fourth,with a sample size of 64.15%.There was a significant positive correlation between the contents of various soil nutrient indexes,showing a strong spatial correlation.All soil nutrient indexes were significantly negatively correlated with total salt content,and significantly negatively correlated with soil pH except for total potassium.Soil nutrient indexes were the lowest in coastal saline soil.The results of this study can guide regional soil improvement and development.

关 键 词：莱州湾南岸 土壤盐渍化 土壤养分 地统计学 空间分布 

分 类 号：P595[天文地球—地球化学] S151.9[天文地球—地质学]