CAJ | 학술논문

采集洪湖湿地两个具有代表性的湖底沉积柱进行对比,应用电感耦合等离子体质谱(ICP-MS)考察了沉积柱中微量元素及稀土元素的纵向分布特征.不同簇类的微量元素在两个沉积柱中呈现不同的纵向分布特征,微量元素富集层位存在明显的差异,表明沉积柱中微量元素的富集与沉积环境相关,直接受长江水流和交换影响的沉积柱(S1)比受洪湖湿地自身演变影响的沉积柱(S2)有更接近表层的富集层位.两个沉积柱纵向的稀土元素配分曲线呈现相似的分布特性,但分散程度不同,表明其具有相同的物源、不同的沉积环境.沉积柱中微量元素及稀土元素的纵向分布特征可以直接记录人类现代工农业活动对洪湖湿地的影响.
채집홍호습지량개구유대표성적호저침적주진행대비,응용전감우합등리자체질보(ICP-MS)고찰료침적주중미량원소급희토원소적종향분포특정.불동족류적미량원소재량개침적주중정현불동적종향분포특정,미량원소부집층위존재명현적차이,표명침적주중미량원소적부집여침적배경상관,직접수장강수류화교환영향적침적주(S1)비수홍호습지자신연변영향적침적주(S2)유경접근표층적부집층위.량개침적주종향적희토원소배분곡선정현상사적분포특성,단분산정도불동,표명기구유상동적물원、불동적침적배경.침적주중미량원소급희토원소적종향분포특정가이직접기록인류현대공농업활동대홍호습지적영향.
The vertical profiles of trace elements including rare earth elements (REEs) in the two typical sediment cores of Honghu Lake wetland were investigated using ICP-MS. The vertical profiles of trace elements in different clusters were different and the enriched horizons of elements had an obvious variation. These results indicated that the enrichment of trace element in the sediment cores is related to the sedimentary environment. The trace elements in S1 core which directly suffered from the current and exchange of the Yangtze River had enriched nearer to surface layer than those in S2 core. The similar chondrite-normalized curve of rare earth elements demonstrated that the two sediment cores had the same material source and different sedimentary environment. The vertical profiles of trace elements in the sediment cores have recorded the impacts of industry, fishery and agriculture on ecology and environment of the Honghu Lake wetland.