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通过对东、黄海海域2006年4月、10月航次的调查,结合210Pb数据,测定了4个站位200余年来沉积物中生源要素(总氮、总磷、总有机碳)的埋藏通量。从时间分布特征可以看出,4个站位中,总氮(TN)的埋藏通量均自底层向表层逐步上升,到上个世纪五、六十年代左右达到较大值后便呈波动下降趋势;总磷(TP)在各站位的埋藏通量的变化比较稳定,几乎没有明显的峰值,均自底层到表层逐渐降低。总有机碳(TOC)的埋藏通量自底层到表层逐步升高,其中10594,10694站位在上世纪六十年代左右均出现了最高值,12694及H1-18站位在上世纪四十年代出现了相对高值,而后便呈下降趋势;从生源要素埋藏通量的空间分布特征可以看出,南黄海各生源要素埋藏通量的平均值分布可能与黑潮流系的影响强弱不同有关,即黑潮流系影响越强初级生产力越弱,生源要素埋藏通量越低,反之则越高;而H1-18站位生源要素的埋藏通量变化特点较为复杂,原因可能与其所处海域水文条件复杂,受陆源影响较大有关。
Based on the investigation of the voyages of April and October 2006 in the East China Sea and the Yellow Sea and 210Pb data, the burial fluxes of biogenic elements (total nitrogen, total phosphorus and total organic carbon) in sediments at four stations over 200 years were measured . It can be seen from the time distribution features that the total nitrogen (TN) burial flux gradually increases from the bottom to the surface at the four stations, and fluctuates downwards after reaching a large value in the 1950s and 1960s Trend of total phosphorus (TP) changes in the buried flux changes at various stations relatively stable, almost no significant peak, both from the bottom to the surface gradually decreased. The burial flux of total organic carbon (TOC) increased gradually from the bottom to the surface, of which 10594 and 10694 stations were the highest in the 1960s and 12694 and H1-18 stations in the 1940s The distribution of burial flux of biogenic elements shows that the mean distribution of burial fluxes of allogenic elements in the southern Yellow Sea may be related to the different influences of the Kuroshio current system, That is, the stronger the impact of the Kuroshio Current is, the weaker the primary productivity is, the lower the burial flux of biogenic elements is, and vice versa; the characteristics of the burial fluxes of the biogenic elements at station H1-18 are more complicated, which may be related to the hydrological conditions Complex, affected by the larger terrestrial sources.