Dataset: Nutrient dynamics of peatland forests after water-level drawdown

Data from a study (Westman and Laiho 2003) investigating post-drainage dynamics of soil properties (top 30-cm) and tree stand biomass in drained peatland forests in Finland. The aims of the study were to evaluate the sufficiency of soil nutrient pools for production forestry, and the ability of a floristic-ecological peatland site type classification for estimating soil nutrient status. The nutrient dynamics were assessed by comparing the nutrient pools in a large number (572) of peatland sites representing six drained peatland forest site types and differing in drainage age. The article Westman and Laiho (2003) is included as a reference below. Sampling and methods are described there. Variable lists with explanations are provided in specific sheets of the Excel files, while the csv files are identical to the data sheets in the Excel files. Ground vegetation data from the same sites were used in the TWINSPAN and DCA analyses by Reinikainen (1988; also included as reference) but were not available for sharing.本数据集源自Westman与Laiho（2003）的一项研究，该研究聚焦芬兰排水泥炭地森林的土壤（0~30cm表层）属性与林分生物量的排水后动态变化。本研究的目标为两大方面：一是评估土壤养分库对用材林经营的适配性，二是验证植物区系-生态学泥炭地立地类型分类法在估算土壤养分状况方面的有效性。研究通过对比572个泥炭地样点的养分库来评估养分动态，这些样点涵盖6种排水泥炭地森林立地类型，且各点的排水年限存在差异。Westman与Laiho（2003）的论文已作为参考文献附于文末，其中详细阐述了采样流程与研究方法。Excel文件的特定工作表中附有带详细解释的变量列表，而CSV文件与Excel文件中的数据表完全一致。同一样点的地面植被数据曾被Reinikainen（1988，亦作为参考文献附后）用于双向指示种分析(TWINSPAN)与去趋势对应分析(DCA)，但该部分数据无法共享。