Dataset to study: "Growth patterns and climate sensitivity differ for understory and canopy trees."

The data originate from four old-growth forest sites: Boubín (BB), Eustaška (EU), Ranšpurk (RN), and Žofín (ZF). Data structure /Dendrometer_data Dendrometer measurements for all trees included in the study. Tape_value – Absolute value of radial increment (band dendrometers) or DBH (point dendrometers). DBH_value – Continuous tree diameter at breast height (DBH). Tape_increment – Change in tree radial size (band dendrometers) or DBH (point dendrometers). DBH_increment – DBH increment. Normalized_growth – Annual growth normalized to a 0–1 scale. Normalized_zero_growth – Annual growth normalized to a 0–1 scale, calculated using the zero-growth approach (excluding stem shrinkage). DBH_zero_growth – DBH calculated using the zero-growth approach (excluding stem shrinkage). Normalized_increment – Increment calculated from normalized growth. Normalized_zero_increment – Increment calculated from normalized zero growth. DBH_zero_increment – DBH increment calculated from DBH zero growth. twd_normalized – Tree water deficit calculated from normalized growth. twd_DBH – Tree water deficit calculated from DBH. GrowthPhase – Tree growth status: growth, tree water deficit (TWD), stem tissue refilling, or no change (see Kašpar et al. 2024, New Phytologist, https://doi.org/10.1111/nph.19852, or the study supported by this dataset for details). DayPhase – Day phase defined by the position of the Sun above the horizon (see Kašpar et al. 2024, New Phytologist, https://doi.org/10.1111/nph.19852, or the study supported by this dataset for details). /Evaluated_hemispheric_photos Percentage of open canopy above the apex of understory trees included in the study. /Meteo_station_data Under-canopy meteorological data including air temperature (T), relative air humidity (H), global solar radiation (R), and precipitation totals, recorded for all relevant combinations of Year × DOY × Hour during measurement periods. /Meteo_understory_data Under-canopy air temperature (T) and relative air humidity (H) data recorded for all relevant combinations of Year × DOY × Hour during measurement periods. /SWP_data Soil water potential (SWP) measured at 10 cm below the soil surface for all relevant combinations of Year × DOY × Hour during measurement periods. /Tree_metadata Study site elevation and geographic coordinates. Tree-level metadata including diameter at breast height (DBH) for all trees included in the study at each site.本数据集源自4处原始森林样地：布宾（Boubín，BB）、欧斯塔什卡（Eustaška，EU）、兰什普尔克（Ranšpurk，RN）以及佐芬（Žofín，ZF）。 数据结构 /Dendrometer_data 本文件夹包含研究中所有被测树木的测径仪测量数据。 Tape_value – 带状测径仪测得的径向增量绝对值，或点状测径仪测得的胸径（DBH，Diameter at Breast Height）绝对值。 DBH_value – 连续记录的树木胸径数值。 Tape_increment – 带状测径仪对应的树木径向尺寸变化量，或点状测径仪对应的胸径变化量。 DBH_increment – 胸径增量。 Normalized_growth – 归一化至0-1区间的年度生长量。 Normalized_zero_growth – 采用零生长法（排除树干收缩效应）计算得到的、归一化至0-1区间的年度生长量。 DBH_zero_growth – 采用零生长法（排除树干收缩效应）计算得到的胸径数值。 Normalized_increment – 基于归一化生长量计算得到的生长增量。 Normalized_zero_increment – 基于归一化零生长量计算得到的生长增量。 DBH_zero_increment – 基于DBH_zero_growth计算得到的胸径增量。 twd_normalized – 基于归一化生长量计算得到的树木水分亏缺（Tree Water Deficit, TWD）。 twd_DBH – 基于胸径计算得到的树木水分亏缺。 GrowthPhase – 树木生长状态，分为生长、树木水分亏缺、茎组织补水以及无变化（详细说明请参见Kašpar等人2024年发表于《新植物学家（New Phytologist）》的研究，https://doi.org/10.1111/nph.19852，或本数据集支撑的相关研究）。 DayPhase – 基于太阳在地平线上的位置定义的日间阶段（详细说明请参见Kašpar等人2024年发表于《新植物学家（New Phytologist）》的研究，https://doi.org/10.1111/nph.19852，或本数据集支撑的相关研究）。 /Evaluated_hemispheric_photos 本文件夹包含研究中所有林下树木冠层上方的开阔冠层占比数据。 /Meteo_station_data 本文件夹包含林冠下气象数据，包括空气温度（T）、相对空气湿度（H）、全球太阳辐射（R）以及降水总量，记录了测量时段内所有年份×日序（Day of Year, DOY）×小时的有效组合数据。 /Meteo_understory_data 本文件夹包含林下空气温度（T）与相对空气湿度（H）数据，记录了测量时段内所有年份×日序（Day of Year, DOY）×小时的有效组合数据。 /SWP_data 本文件夹包含测量时段内，土壤表层以下10cm处测得的土壤水势（Soil Water Potential, SWP）数据，涵盖所有年份×日序（Day of Year, DOY）×小时的有效组合。 /Tree_metadata 本文件夹包含样地海拔与地理坐标信息，以及各研究样地中所有被测树木的单木元数据，包括胸径（DBH，Diameter at Breast Height）数值。