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通过对南海中部1993~1996年获得的浅层和深层时间系列沉积物捕获器的样品分析,发现了稳定同位素值、颗粒总通量、碳酸盐、生物蛋白石、有机碳、表层初级生产力、浮游有孔虫总通量和属种的分布存在明显的季节性变化,其通量都是在东北季风和西南季风盛行期出现高值,在季风转向期出现低值.浮游有孔虫Globigerinoides sacculifer,G.ruber,Globigerinita glutinata,Neo-globoquadrina dutertrei等种的通量和相对百分含量也是在东北季风和西南季风盛行期都出现高值,但Globigerina bulloides,Globorotalia menardii和Pulleniatina obliquiloculata等种则在东北季风盛行期出现高值.分析还发现Globigerinoides sacculifer和Globorotalia menardii等种的通量和百分含量以及有孔虫总通量和碳酸盐通量等从1993到1996年存在下降趋势,而Globiger-ina.bulloides和Globigerinita glutinata的通量和百分含量以及生物蛋白石通量等在该期间显示为上升趋势.浅层捕获器样品中的碳酸盐和有机碳的通量比深层的高.研究表明海洋沉降通量和浮游有孔虫属种的季节和年际变化主要受与东亚季风相关的表层初级生产力和海洋水文条件变化所控制,深层捕获器样品中的碳酸盐和有机碳的通量低应与碳酸盐溶解作用有关.
Based on the sample analysis of shallow and deep time series sediment traps obtained from 1993 to 1996 in the middle part of South China Sea, stable isotope values, total grain flux, carbonate, bio-opal, organic carbon, primary productivity, The distributions of total foraminiferal species and their genera have obvious seasonal changes, and their fluxes are high in the northeast monsoon and southwest monsoon, and low in the monsoon turning phase. Globigerinoides sacculifer, The fluxes and relative percentages of G.ruber, Globigerinita glutinata and Neo-globoquadrina dutertrei also showed high values in the northeast monsoon and southwesterly monsoon prevalence, but Globigerina bulloides, Globorotalia menardii and Pulleniatina obliquiloculata were higher in the northeast monsoon High value occurred in the period of prevalence.The analysis also found that Globigerinoides sacculifer and Globorotalia menardii and other species of flux and the percentage of foraminiferal total flux and carbonate flux from 1993 to 1996 there is a downward trend in Globiger-ina The flux and percentages of bulloides and Globigerinita glutinata, as well as the biopharm flux, Showing an ascending trend.The fluxes of carbonate and organic carbon in the shallow trap samples were higher than those in the deeper layers.The results show that the seasonal and interannual variations of ocean sedimentation flux and planktonic foraminifera species are mainly affected by the East Asian monsoon Related to primary surface productivity and variations in ocean hydrological conditions, the low flux of carbonate and organic carbon in deep trap samples should be related to carbonate dissolution.