中文摘要：

扫描电镜观察及X射线能谱分析结果表明，岩鹭卵壳的超微结构从外向内分为表层、柱状层、锥体层和壳膜。表层之外具有护膜。表层、柱状层和锥体层之间的气孔相互连通。壳膜的多层网状结构由粗细不等的蛋白质纤维交织重叠排列构成，外壳膜具有光滑同质网结构。岩鹭卵壳主要含有C、O、Ca、Mg和S等元素。岩鹭与其它鹭亚科鸟类在卵壳厚度、锥体层乳突状图形等超微结构以及元素组成上存在着差别，需要进行更多物种的研究积累以便分类比较鉴定。

英文摘要：

In this study, the ultrastructure and element composition of the Eastern Reef Heron＇ s egg shell were investigated by scanning electron microscopy and X-ray energy dispersive spectrometer respectively. The uhrastructure of the egg shell can be divided into cover, column layer, cone layer and shell membrane from outside to inside. A cuticle was found on the outer surface of the egg shell cover. There were some spiracle connected each other among the cover, column layer and the cone layer. The network structure layers in shell membrane were composed by different diameter of protein fiber weaved and cross-linked. In the outer shell membrane, there was a smooth and homogeneous net structure. The shell mainly included C, O, Ca, Mg and S. The ultrastructure, such as the thickness and the mammilla shape, and element composition of the egg shell were found different among the eastern reef heron and other species of ardeinae. More species of ardeinae should be further studied in order to identify them by comparing their ultrastructure and element composition of the egg shell.