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对10种人工林木材pH值和酸、碱缓冲容量的研究结果表明: 1)株间pH 值变异较小, 而酸、碱缓冲容量变异较大,其pH 值大都在4～5之间变动, 但“三北一号”杨的pH达7以上;2)针叶树材的酸缓冲容量在3～7内变化,但火炬松心材部分达到8以上;阔叶树材的酸缓冲容量变化范围较大,在0.2～30; 3)多数针叶树材的碱缓冲容量在2～8范围内变化,只有火炬松心材部分达到8以上。阔叶树材的酸缓冲容量变化范围较大, 在3～34变动;4)除“三北一号”杨外,多数人工林木材幼龄材的pH值低于成熟材, 即随年轮段的增大,pH值从低向高变化。
The results of pH value, acid and alkali buffering capacity of 10 kinds of plantation wood showed that: 1) the variation of pH between strains was small, while the buffer capacity of acid and alkali varied greatly, most of them varied from 4 to 5 , But the pH value of “Three Norths” was above 7; 2) The acid buffer capacity of coniferous wood changed within 3 ~ 7, but the part of loblolly pine heartwood reached more than 8; The buffer capacity of broad-leaved tree varied greatly, In 0.2 to 30; 3) most of the coniferous tree alkali buffer capacity in the range of 2 to 8, only part of the lobular heartwood reached more than 8. The broad-leaved tree’s acid buffering capacity varied widely from 3 to 34; 4) In addition to the “Three North” Yang, most artificial plantation wood young material pH value is lower than that of mature wood, that is, Increase, pH changes from low to high.