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Effects of site conditions on growth and wood properties of Populus×euramericana cv.'74/76'

Journal of Forestry Research 2023年第2期34卷 401-414页

作者： Jianmin Fan Changjun Ding Shijie Wang Changming Ma Chao Zhang Yongtan Li Jinmao Wang Minsheng Yang Xiaohua Su Forest Department Forestry CollegeHebei Agricultural UniversityBaoding 071000People’s Republic of China Research Institute of Forestry Chinese Academy of ForestryBeijing 100091People’s Republic of China Hebei Key Laboratory for Tree Genetic Resources and Forest Protection Baoding 071000People’s Republic of China Forestry College Hebei Agricultural UniversityBaoding 071000People’s Republic of China

The growth and wood properties of 240 individual Populus×euramericana cv.’74/76’(hereafter poplar 107)trees planted in Hebei Plain,China was evaluated.Mean annual increments in height,breast height diameter and volume,as well as cellulose,hemicellulose and lignin contents,shrinkage,density,bending strength and modulus of elasticity in the heart wood and sap wood.Environmental factors influencing growth and wood properties were analyzed using correlation and stepwise regres sion.The results show that the coefficients of variation(CVs)of growth traits ranged from 10.6 to 22.4%.The CVs of the chemical properties of heartwood ranged from 4.3 to 30.2%,and for sap wood from 3.2 to 27.5%.The CVs of the physical and mechanical properties of heartwood ranged from 8.6 to 31.7%,and for sapwood from 6.4 to 29.9%.The results of one-way ANOVA showed that there were significant differences in growth traits and wood properties among sites.Soil pH,total and available phosphorus,total potassium,and soil organic matter were key soil factors affecting growth and wood properties of poplar 107,whereas mean annual ground temperatures and precipitation were the main climatic factors.To better cultivate poplar 107,area with less annual rainfall,slightly higher temperature and soil pH value close to neutral should be selected.

关键词： Poplar clone Environmental factors Growth wood density Mechanical properties wood chemical composition

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wood Density of Ten Native Trees and Shrubs and Its Possible Relation with a Few wood chemical compositions

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American Journal of Plant Sciences 2016年第8期7卷 1192-1197页

作者： Ratikanta Maiti Humberto Gonzalez Rodriguez Aruna Kumari Facultad de Ciencias Forestales Universidad Autónoma de Nuevo León Linares México Agricultural College Professor Jaya Shankar Telangana State Agricultural University Jagtial India

The present study was undertaken in Forest Science Faculty, Universidad de Nuevo Leon, Mexico on variability of wood density and its possible relation to few wood chemical composition and wood fiber cell structure anatomy. The results reveal that among 10 specie studied, there exist a large variation in wood density (0.51 to 1.09), and few wood chemical composition such % carbón (37.14 to 44.07), nitrogen (9.18 to 19.22), sulphur (31.45 to 33/82), lignin (15/28 to 24.35), hemicellulose (19.94 to 27.36%), and % cellulose (33.69 to 45.92). In general, though there was no clear relationship between wood density and other chemical composition of wood. It was observed that the species having moderate to high wood density contained >40% carbón, >30% sulphur and >40% cellulose and more or less 20% lignin. It seems that carbón, sulphur, cellulose and lignin content contribute to greater density. The wood fiber cell with wall lignification seems to be related to higher wood density.

关键词： wood Density wood chemical composition Cellulose Lignin Carbón Concentration Variability

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