Age, size, and disease severity of thinleaf alder stems along the Tanana River floodplains, collected in 2006 and 2007.

Thinleaf alder stands on the Tanana River floodplains, sampled in 2006 and 2007: A subsample of thinleaf alder stems were aged using tree-ring analysis, and the age structures of alder populations were estimated from their size structures (DN_alder_stand_structure1), based on the size/age relationships derived from this dataset. Relationships between disease incidence/severity and size/age were also explored. Included in this dataset are: the stem diameter at breast height (dbh), age of stem at ground level, age at breast height, and disease severity.

塔纳诺河河漫滩薄叶桤木（Thinleaf alder）林分：2006年与2007年开展采样。本研究选取薄叶桤木茎干的子样本，通过树木年轮分析测定其树龄；基于本数据集推导得到的径级-树龄关系，从桤木种群的径级结构估算其年龄结构（数据集标识：DN_alder_stand_structure1）。本研究还探究了病害发病率与严重程度同径级、树龄之间的关联。本数据集包含以下指标：茎干胸径（stem diameter at breast height，缩写dbh）、基茎处树龄、胸高处树龄以及病害严重程度。