Plot Condition Groups Defined By Forest Inventory and Analysis Program

Extract of FIA data ("COND" files). A condition is a discrete combination of landscape attributes that define the condition (a condition will have the same land class, reserved status, owner group, forest type, stand-size class, regeneration status, and stand density). Conditions are assigned to plots.

FIA（Forest Inventory and Analysis，森林资源清查与分析）数据提取子集（即"COND"文件）。立地条件单元是定义其属性特征的景观属性离散组合；每个立地条件单元的土地类别、保护状态、所有者群体、森林类型、林分大小级、更新状况及林分密度均保持一致。此类条件单元将被分配至森林样地。