铁桦树树种与资源分布的考证

通过树种标本采集、木材物理性质分析及与权威参考文献核对，最终确定国内所称铁桦树即辽东桦(Betula schmidtii Regel)主要分布于我国吉林、辽宁两省，为我国东北地区最硬木材。

Textual research on the taxonomy name and its resources of iron birch

The iron birch, a tree species recorded in the book of Plant Fascicule of Top in the World, was finally identi-fied as Liaodong birch (Betula schmidtii Regel) in China by means of collecting samples, analyzing wood physical char-acteristics and looking up the authority references. The species distributed in Jilin and Liaoning province in China, and was a species with the most rigid wood in Northeast of China. By far, most studies on this species had focused on its tax-onomy, but there were a few reports address its growth behaviors and timber features.