莱州湾南岸表层土壤含盐量与有机质空间分布的定量研究  

Quantitative analysis of the spatial distribution patterns of top soil salinity and organic matter in southern coastal area of the Laizhou Bay

作　　者：刘文全[1] 于洪军[2] 徐兴永[1] 

机构地区：[1]国家海洋局第一海洋研究所,山东青岛266061 [2]国家海洋环境监测中心,辽宁大连116023

出　　处：《海洋通报》2014年第3期277-282,共6页Marine Science Bulletin

基　　金：海洋公益性行业科研专项(201105020);基本科研业务费专项(2011G19);国家海洋局海域管理技术重点实验室基金(201308)

摘　　要：以整个莱州湾南岸区域作为研究对象,运用统计分析和相关分析方法研究了莱州湾南岸盐渍化土壤中盐分与有机质空间分布特征及二者之间的相关性,并对耕地土壤有机质进行分级。结果表明,土壤有机质含量符合正态分布,全盐含量符合对数正态分布;有机质和全盐含量在东西方向具有2阶趋势效应,南北方向上有机质具有1阶趋势效应,而全盐含量具有2阶趋势效应;二者在空间分布上符合球状模型,有机质表现为南高北低,全盐含量则为北高南低;从相关性来看,二者具有显著负相关,说明盐分含量的增加导致土壤有机质含量降低,土壤质量下降。研究结果为莱州湾南岸地区土地利用和盐渍化评估提供了科学依据。In this study, with the support of geostatistical analysis and correlation analysis, the spatial distribution of and correlation between soil salinity and organic matter of the southern coastal area of the Laizhou Bay were studied, and the soil organic matter content was graded. The results indicated that organic matter content accorded with normal distribution and the salinity content conformed to logarithmic normal distribution. The contents of organic matter and salinity presented second-order trend effect in the east-west direction. In the north-south direction, the organic matter content and the salinity content presented first-order trend effect and second-order trend effect respectively. The spatial distributions of organic matter and salinity contents accorded with the spherical model. The organic matter content declined along the south-north direction. On the contrary, salinity content declined along the north -south direction. There was a significant negative correlation between the contents of organic matter and salinity, indicating that the organic matter content decreased with the increase of the salinity content, consequently the soil quality declined. The results of this study provided scientific basis for the land use and salinization assessment of the southern coastal area of the Laizhou Bay.

关 键 词：莱州湾南岸 有机质 盐分 空间变异 

分 类 号：S156.4[农业科学—土壤学]