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Konza草原长期生态研究（Long-Term Ecological Research, LTER）站点选定的集水区内3种优势草原草本植物的相关指标数据，涵盖种子生产、花茎生物量、株高及种群密度，这3种植物分别为：须芒草（Andropogon gerardii, ANGE）、垂穗高粱草（Sorgastrum nutans, SONU）以及小须芒草（Schizachyrium scoparium, ANSC）。
数据集包含了两种土壤类型（浅型与深型）下，不同火-放牧处理组合集水区的多项测量参数：花茎高度（单位：米）、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）。
本次采样覆盖的集水区随时间发生过调整，当前纳入采样的集水区包括：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月或11月（生长季末期）开展一次，其采样设计相较于PRE01略有改动。