Condition and survival perspectives of natural regeneration of European ash (Fraxinus excelsior L.) in stands with different Scots pine (Pinus sylvestris L.) proportions

The data contained in the ‘Main data’ dataset include: no. of plot and subdivision, share of mature and pine trees, age of ash trees; assessed soil group acc. IUSS WRB 2015; results of soil analysis at the 20 cm depth, i.e. soil organic matter (SOM), soil pH, pH of forest litter, calcium carbonate, soil texture, total nitrogen (N), Ca, K and Na; no. of ash seedlings and saplings, no. of browsed and damaged seedlings and saplings, no. of dead seedlings and saplings without fungus damage symptoms; summer groundwater level; soil moisture measured at the 20 cm depth; canopy, shrub, herb, and moss covers. The data in the dataset called ‘Health status of ash saplings’ include: health status of seedlings and saplings, i.e. healthy, dead, with stem lesions, live with dead top, browsed, and dead without presence of Hymenoscyphus fraxineus (HF).

“主数据”数据集包含以下内容：样地与分区编号、成熟林木与松树占比、白蜡树树龄；依据国际土壤科学联合会（International Union of Soil Sciences, IUSS）2015年世界土壤资源参比基础（World Reference Base for Soil Resources, WRB）划定的土壤类群；20 cm土层的土壤分析结果，即土壤有机质（Soil Organic Matter, SOM）、土壤pH值、森林枯落物pH值、碳酸钙含量、土壤质地、全氮（Total Nitrogen, N）、钙（Calcium, Ca）、钾（Potassium, K）与钠（Sodium, Na）；白蜡幼苗与幼树数量、受啃食及受损的幼苗幼树数量、无真菌病害症状的死亡幼苗幼树数量；夏季地下水位；20 cm土层测得的土壤含水率；林冠层、灌木层、草本层与苔藓层盖度。名为“白蜡幼树健康状况”的数据集包含以下内容：幼苗与幼树的健康状况，即健康、死亡、具茎部病斑、存活但顶梢枯死、受啃食，以及未感染窄茎杯伞菌（Hymenoscyphus fraxineus, HF）的死亡个体。