文献类型：期刊文献

英文题名：Wood mechanical properties and their correlation with microstructure in Chinese fir clones

作者：Wang, Yurong[1,2] Jia, Ru[1,2] Sun, Haiyan[1] Liu, Yamei[3] Lyu, Jianxiong[1] Zhao, Rongjun[1] Liu, Shengquan[3]

第一作者：王玉荣

通信作者：Wang, YR[1];Wang, YR[2];Liu, SQ[3]|[a0005066e07bcca30717f]王玉荣;

机构：[1]Chinese Acad Forestry, Res Inst Wood Ind, Beijing 100091, Peoples R China;[2]Chinese Acad Forestry, Res Inst Forestry New Technol, Beijing 100091, Peoples R China;[3]Anhui Agr Univ, Sch Forestry & Landscape Architecture, Hefei 230036, Anhui, Peoples R China

年份：2021

卷号：42

期号：4

起止页码：497-506

外文期刊名：IAWA JOURNAL

收录：;Scopus(收录号：2-s2.0-85118532315);WOS:【SCI-EXPANDED(收录号:WOS:000720777400004)】；

基金：The authors would like to gratefully acknowledge financial support from the National Key Research and Development Project of China (2017YFD0600201). Thanks also go to the following: Mr. Liang Zhou and Mr. Min Yu of the Anhui Agricultural University for selecting and collecting Chinese fir clones. Kaihua Forest Farm of Zhejiang province for providing Chinese fir clones. Ms. Rui Wang of Research Institute of Wood Industry, Chinese Academy of Forestry, and Mr. Yingliang Yu of Anhui Agricultural University for technical help regarding microstructural observation and some data analysis.

语种：英文

外文关键词：  Chinese fir; clones; mechanical properties; microstructure

摘要：Mechanical testing, microscopic image analysis, and X-ray diffraction were used to study the mechanical propertiesand their correlation with microstructure in three 20-year-old Chinese fir clones (Kailin 24, Kaihua 13, and Kaihua 3).The Chinese fir clones featured a modulus of rupture (MOR) of 52-59 MPa, a modulus of elasticity (MOE) of 10-11 GPa, and a compressive strength parallel to the grain of 31-34 MPa. Kaihua 13 and Kailin 24 had similar mechanicalproperties and were superior to Kaihua 3 among the tree clones. Radial variation indicated that their outerwood(rings 9-18) had better mechanical properties than their corewood (rings3-7). Kaihua 13 with better mechanicalproperties had a larger ratio of cell wall to lumen than Kaihua 3 and Kailin 24. Outerwood with better mechanicalpropertiesalsohadalargerratioof cellwalltolumenandasmallermicrofibrilanglecomparedtocorewoodwithpoormechanical properties. Linear regression analysis also shows that for various clones and different radial positionsin the same clone, anatomical structure parameters such as average cell wall thickness and the ratio of cell wall tolumen were positively correlated to their mechanical properties, while the microfibril angle was negatively correlatedto mechanical properties. The two factors synergistically influence themechanical properties of wood