中文摘要：

珊瑚礁作为古环境记录的良好载体，时常受到成岩作用的制约，正确认识和评价成岩作用，是开展珊瑚礁古环境重建的关键。珊瑚礁成岩作用主要包括胶结作用、溶解作用、新生变形作用和白云岩化作用等类型。一方面，成岩作用本身可记录珊瑚礁经历的海平面升降、气候变化、海水性质改变、热液改造、微生物活动等地质过程，利用成岩演化过程可恢复古环境变化过程；另一方面。成岩作用又对珊瑚礁记录的原始环境信息产生了破坏，恢复古环境时需识别成岩作用对其影响的程度。在未来研究中，应加强成岩作用与现代气候环境、海平面变化、大气淡水改造、微生物活动的关系研究，以期提供更准确、更长时间序列的珊瑚礁古环境记录。

英文摘要：

Coral reefs are often constrained by diagenesis as a sound environmental archive. The correct understanding and evaluation of diagenesis is the key to the paleoenvironmental reconstruction of coral reefs. The diagenesis of coral reefs mainly includes cementation, dissolution, neomorphism and dolomitization etc. On the one hand, the diagenesis itself can record the paleoenvironment that coral reefs underwent, such as sea-level fluctuation, climate change, change of sea water, hydrothermal alteration, microbial activity and so on. The diagenetic evolution thus can be used for the reconstruction of paleoenvironment change. On the other hand, diagenesis also destroys the original environmental information which recorded of coral reefs recard, and it is necessary to know the degree of the impact of diagenesis. In the future, we should pay more attention to the study on the relationships among diagenesis, modem climate, sea-level change, atmospheric water transformation and microbial activity. It can provide more accurate and longer time series of paleoenvironmental information that coral reefs recorded.