黄河三角洲贝壳堤岛贝壳沙中微量元素含量及形态特征  

The Characteristics of Microelements Content and Forms of Seashell Islands in Yellow River Delta

作　　者：刘庆[1] 孙景宽[1] 田家怡[1] 吕振江[2] 许帅[1] 

机构地区：[1]滨州学院/山东省黄河三角洲生态环境重点实验室,山东滨州256603 [2]西北农林科技大学林学院,陕西杨陵712100

出　　处：《水土保持学报》2009年第4期204-207,212,共5页Journal of Soil and Water Conservation

基　　金：山东省自然科学基金(Y2006D01);滨州学院博士研究生奖励基金(2007Y07)

摘　　要：通过对不同植被覆盖、不同剖面层次贝壳沙样品的采集与分析,研究了黄河三角洲贝壳堤岛贝壳沙中微量元素Fe,Mn,Cu,Zn的含量及形态特征。结果表明:贝壳沙中全Fe含量明显高于全国土壤中Fe的含量均值,而Mn,Cu,Zn 3种元素却远低于全国土壤中的含量。无论是表层样品还是剖面样品,微量元素含量均具有较大变异,且表层以下剖面样品4种元素含量高于表层样品含量。受植物生长的影响,有机枯落物较多的表层贝壳沙样品,其元素含量相应高于没有植被覆盖的表层样品。不同剖面样点自上而下,微量元素含量变化规律并不一致,其全量与有效态含量的相关性大小也不一样。Mn,Cu两种元素全量和有效态含量之间达到极显著相关水平(P<0.01),而Fe,Zn两种元素全量和有效态含量之间的相关性却不显著,这可能是受元素种类与环境条件的双重影响所致。This paper studied on the characteristics of microelements content and forms in shell sand which sampled from different vegetation covered and different profile layers of Seashell Islands in Yellow River Delta. The results showed that the mieroelements content in shell sand had a notable variance whether in surface layers or in undersurface layers and the microelements content in undersurface layers exceeded which in surface layers. The content of total Fe in shell sand were obviously exceeded the average value which in countrywide soils and Mn,Cu, Zn were not like this. Affected by different vegetation on the surface layers of Seashell Islands, the mieroelements content were higher in samples which have more organic litters covered than those have no more organic litters. From top to bottom of the profile, the changing principles of microelements content were different, the correlation between total content and available content of the four elements were not the same. The correlation were significant between total and available content of Mn and Cu but which of Fe and Zn were not significant. It is maybe affected by the different element types and different environmental conditions.

关 键 词：微量元素 含量与形态 贝壳沙 贝壳堤岛 黄河三角洲 

分 类 号：S153.6[农业科学—土壤学]