古新世与始新世界线(P/E)事件中底栖大有孔虫的绝灭(BEE)以及演替(LFT)在古近纪底栖大有孔虫演化过程中起着非常重要的作用。西藏南部岗巴地区发育有良好的海相界线地层,在宗浦Ⅱ剖面中,对底栖大有孔虫动物群及碳、氧稳定同位素的研究显示全球界线事件对该地区造成明显影响。在界线附近,底栖大有孔虫出现大量灭绝,总灭绝率达71%,界线之上开始出现复苏,底栖大有孔虫的新生率为72%。事件过后,底栖大有孔虫SBZ4动物群被SBZ5-SBZ13动物群代替,以古新统宗浦组的Miscellanea miscella,Lockhartia hai mei,Glomalveolinapri maeva的灭绝和Operculina属的消失及始新统遮普惹组Nummulites willcox,Alveolina ellipsoidalis和Orbi-tolites complanatus出现为特征。在古新世界线顶部,碳稳定同位素值出现明显负偏,峰值为-7.9‰,与全球同一时期碳稳定同位素事件表现一致;氧稳定同位素表现则与全球事件不太相同,这可能是由于成岩作用的影响。 The extinction (BEE) and succession (LFT) of benthic macro-foraminifera in the Paleocene-Ceno-New-onset (P / E) event played a very important role in the evolution of the benthic macro-foraminifera in the Paleogene Role. A good marine boundary strata have been developed in the Gamba area in southern Tibet. Studies of the benthic foraminifer fauna and the stable carbon and oxygen isotopes in the Zongpu II section show that the global boundary events have had a significant impact on the region. Near the boundary, a large number of benthic foraminifera extinct, the total extinction rate of 71%, began to recover above the borderline, benthic macro foraminifera was 72%. After the event, the benthic foraminifera SBZ4 fauna was replaced by the SBZ5-SBZ13 fauna, with the extinction of the Miscellanea miscella, Lockhartia hai mei, Glomalveolinapri maeva and the disappearance of the Operculina genus of the Palaeocene Zongpu Formation and the beginning of the New Testaways Nummulites willcox, Alveolina ellipsoidalis and Orbi-tolites complanatus appear to be characteristic. At the top of Paleocene line, the carbon stable isotope values ​​show a significant negative bias with a peak value of -7.9 ‰, which is consistent with the same period of carbon stable isotopes in the world. The oxygen stable isotopes behave differently from the global events probably due to diagenesis Effect of the effect.