饱水古木材横切片通常显示两个或更多的不同降解区域。光学显微镜、电子显微镜、配合组织的化学成分分析,证明了木材从内到外的非生命化学降解过程。随着水分的充满,次生壁因糖类的水解开始松动。细胞壁失去荧光性和双折射。最后残存的木质素结构崩塌,只剩粒状残片。第三层细胞壁,特别是薄片状胞间层,有抵抗力,只要一直充满水就会保持原始组织尺寸。 Waterlogged ancient wood cross-sections usually show two or more different degradation areas. Optical microscopy, electron microscopy, chemical composition analysis with the organization proved that the wood from the inside out non-life chemical degradation process. As the water is full, the secondary wall begins to loosen due to the hydrolysis of sugars. Cell wall loses fluorescence and birefringence. Finally, the remaining lignin structure collapsed, leaving only granular debris. The third cell wall, especially the lamellar intercellular layer, is resistant and keeps the original tissue size as long as it is filled with water.