WOOD RESEARCH Volume 71, Number 2, 2026
SI XU, HAOYANG LI, JIAJIE CHEN, TONGYU XU, ZIYAN LUO, XIANGHE LIU, HAIDI JI, Bin Li, and Yan Yang

The Study on Timber Species used in Wooden Components of the Cultural Heritage Buildings of Shijia Courtyard, Xuzhou City

To clarify the timber species composition of wooden components in the cultural heritage buildings of Shijia Courtyard, and to provide support for the precise protection and restoration of these cultural heritage buildings, timber species were identified through microscopic observation. The results showed that the wooden components adopt typical native tree species including Pinus bungeana, Cunninghamia lanceolata, Acer spp., Populus spp., and Ulmus spp. This finding clarifies the timber species lineage of the building’s wooden components. This study fills the gap in basic research on the timber species used in the wooden components of Shijia Courtyard. It also provides scientific guidance for the restoration of wooden components and the selection of replacement materials in Shijia Courtyard and other similar folk cultural heritage buildings of the Ming and Qing dynasties.

WOOD RESEARCH Volume 67, Number 4, 2022
Yan Yang, Xiaoqian Zhang, Qian Xu, Peiyang Wang, Shilong Jiang, Yan Min, Wenye Sun, Bin Li, Yulong Fan, and Shuang Yang

Evaluation of the decay levels of wooden components in arcade buildings in the ancient town Chikan via polarized light, fluorescence and FTIR spectra

In order to classify the decay levels of Chinese fir (Cunninghamia lanceolata) wood components in arcade buildings in the ancient town Chikan and to provide basic data for future protection measures, the extent of decay of the samples was determined via polarized light, fluorescence, and Fourier-transform infrared spectroscopy. The results were as follows: (1) The total birefringence brightness of crystalline cellulose and the green fluorescence brightness of the lignins were reduced to different degrees in almost all samples. (2) The absorption peaks at 1731 cm-1 representing hemicellulose and at 891 cm-1 representing cellulose in all samples disappeared. The absorption peak heights at 1370 cm-1, 1159 cm-1 and 1058 cm-1 which represents holocellulose, and at 1508 cm-1, 1424 cm-1, and 1262 cm-1 which represents lignin decreased to varying degrees. (3) From the analysis, the decay level of wooden components in arcade buildings was divided into three classes, i.e., Level I (severe decay), Level II (moderate decay), and Level III (mild decay).

WOOD RESEARCH Volume 66, Number 2, 2021
Yan Yang, He Sun, Shuang Yang, Aifeng Wang, Rui Zhao, Wei Wang, Yiming He, Bin Li, Binxin Zhang, and Qian Wu

Internal cause analysis of damage of wooden components in danxia temple ancient architectures: Tree species

In the study, part of degraded wooden components of Danxia Temple ancient architectures in China were indentified through the bright field microscope, and chemical compositions in cell walls were observed using polarized and fluorescence lights, respectively. The results showed that samples were belonged to Quercus spp., Ulmus spp., Salix spp., and Populus spp., respectively. Cellulose composition in Quercus spp. was seriously consumed by brown decay fungi, cellulose and lignin compositions in Ulmus spp. were consumed by white decay fungi under polarized and fluorescence light observations. All of these four kind of tree species themselves were easily vulnerable to be attacked by insects.