林地土壤类型对毛白杨木材性质的影响

本文对林地土壤对毛白杨木材性质影响的研究进行了综述。结果表明，水肥作用较好的夹淤沙壤质黄潮土生长的毛白杨木材纤维长度、宽度及全干缩率略大于通体沙壤质黄潮土的毛白杨，而前者的木材纤维长宽比、微纤丝角、气干密度、基本密度、抗弯弹性模量、抗弯强度和顺纹抗压强度略低于后者；木材pH值随土壤pH值的增加而减少，心、边材pH值匀呈酸性，且心材酸性强于边材；碱缓冲容量和总缓冲容量心材大于边材；酸缓冲容量心、边材差异很少；通体沙壤质黄潮土生长的毛白杨木材pH高于夹淤沙壤质黄潮土生长的毛白杨材，尤其边材差异更大；而土壤类型对木材的酸碱和总缓冲容量的影响甚微。方差分析，除木材密度、微纤丝角差异达到显著水平外，其它各项指标差异均不显著。

A Review on Effects between Soil Types of Forest Site Upon Wood Properties of Populus tomentosa Carr

Wood properties of populus tomentosa Carr. grown in two different kinds of soil types in Guam Gounty, Shandong Province.varied with different kinds of soils. The soil with more nutrient elements and available water content led to arising tendency of wood fiber length, width, total shrinkage, and a declining trend of the wood density, the ratio of fiber length to width, the microfibrillar angles, MOE, MOR and compressive strength parallel to the grain. Wood pH value had a declining tendency with the increase of pH value in soil. The pH of sapwood was affected much more than that of heartwood by soils types. The buffering capacity was not relevant to soil types. But after they were checked by the analysis of variance, there was an obvious difference between soil types and wood properties except the wood density and the microfibrillar angles. This result of the researching summaries could provide certain theoretical bases for silvicultural practices and utilizing and working.