PRE02 Reproductive effort of Big Bluestem, Indiangrass and Little Bluestem on selected Konza Prairie LTER watersheds

This data set focuses on seed production, flowering stem mass, height, and population densities of three dominant prairie grasses: Andropogon gerardii (ANGE), Sorgastrum nutans (SONU), and Schizachyrium scoparium (ANSC) in selected Konza Prairie LTER watersheds. Data set includes measurements of flowering stem height (m), density (no. per sq. m) and production (grams per sq. m) and total seed weight (grams) and production (grams per sq. on 2 soil types (shallow and deep) in watersheds representing different burning-grazing treatment combinations. Specific watersheds sampled have varied over time. Current watersheds include: 001d, R01a, R01b, 002c, 002d, 004a, 004b, 020b, R20a, R20b, 0SpA, 0SpB, 0SuA, 0SuB, 00FA, 00FB, 00WA and 00WB Sampling is done once a year in October/November (end of growing season). (Sampling design slightly altered from PRE01).

本数据集聚焦于康扎草原长期生态研究（Konza Prairie LTER）选定流域内三种优势草原草本的种子产量、花茎生物量、株高及种群密度。所涉草种分别为大须芒草（Andropogon gerardii，ANGE）、垂穗高粱草（Sorgastrum nutans，SONU）以及小须芒草（Schizachyrium scoparium，ANSC）。数据集涵盖两种土壤类型（浅层与深层）下，不同火烧-放牧处理组合流域的多项实测指标：花茎高度（单位：米）、花茎种群密度（单位：株/平方米）、花茎生物量产量（单位：克/平方米），以及总种子重量（单位：克）与种子产量（单位：克/平方米）。采样流域随时间有所变化，当前参与采样的流域包括：001d、R01a、R01b、002c、002d、004a、004b、020b、R20a、R20b、0SpA、0SpB、0SuA、0SuB、00FA、00FB、00WA及00WB。采样工作于每年10月/11月（生长季末期）开展，其采样设计相较于PRE01略有调整。