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- W2351253143 abstract "Wood properties from 28 trees (Populus euramericana) selected from healthy and acid rain damaged forest were measured to evaluate the possible impacts on wood quality and utilization. On the heavily damaged location, the pH value of precipitation ranged from 3.7-5.0, and sulfate loading ranged from 20-40 kg·ha-2.y-1. Quantitative and qualitative studies on ring width, physical properties and mechanical properties indicated that changes of wood properties between diseased and healthy poplar occurred. Acid rain suppressed growth increment of trees in damaged forest. Comparing with healthy poplar, ring width of diseased poplar reduced significantly. The water content across the steni area differed enormously between diseased and healthy poplar. The deficiency in water of sapwood from diseased poplar was associated with a decrease of sapwood portion. Basic density of wood from diseased poplar reduced significantly. No significant difference in cellulose, pentosan and lignin were found between diseased and healthy poplar, but the content of hot-water extract, benzene-alcohol extract and 1%NaOH extract were significantly different. Bending strength, compression strength and hardness were at normal level and independent on damage degree of pollution. Modulus of elasticity of wood from diseased poplar decreased by 12.1% than from healthy poplar. Although the mean values of impact bending from diseased and healthy trees were same, the standard deviation showed entirely different." @default.
- W2351253143 created "2016-06-24" @default.
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- W2351253143 date "2002-01-01" @default.
- W2351253143 modified "2023-09-24" @default.
- W2351253143 title "Wood Properties of Poplar from Stand Affected by Acid Rain" @default.
- W2351253143 hasPublicationYear "2002" @default.
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