Project BudBurst Plant Phenology Data, 2009, USA

Project BudBurst is a long-term citizen science project designed to engage the public in the collection of plant phenology data across the United States. Project BudBurst is part of the National Ecological Observatory Network (NEON, Inc), solely funded by the National Science Foundation. The Phenophases recorded and the definitions of those phases have evolved from year to year. Individual year metadata clarify Phenophase_Name and Phenophase_ID descriptions for that year. On March 17, 2011, the Project BudBurst protocol split into two types of reporting: Regular Observations and Single Reports/Occasional Observations. 2011 was the fifth year of the project. Data are collected using two protocols, 1) Regular Observations and 2) Single Reports/Occasional Observations, described below. Regular Observations: Event-based monitoring where participants watch a specific plant throughout the year and record the date on which specific phenophases occur. Five plant groups are monitored: Deciduous Trees and Shrubs, Wildflowers and Herbs, Evergreen Trees and Shrubs, Conifers, and Grasses. Single Reports/Occasional Observations: Status-based monitoring where participants record what they observe a plant doing, including null values, at a given point in time. In 2011, Single Reports/Occasional Observations were only available for Wildflowers and Herbs, Deciduous Trees and Shrubs, and Grasses. It was not possible to enter Single Reports/Occasional Observations for "Other" plants during 2011. The data collected as part of Project BudBurst are intended to help scientists learn more about the responsiveness of individual plant species to changes in climate locally, regionally, and nationally. More detailed information about Project BudBurst is available on the website at budburst.org芽展观测计划（Project BudBurst）是一项长期公民科学项目，旨在动员公众在美国全境收集植物物候数据。该项目隶属于美国国家生态观测站网络（National Ecological Observatory Network, NEON, Inc），由美国国家科学基金会独家资助。 所记录的物候期及其定义逐年迭代更新。各年度的元数据会明确标注对应年份的物候期名称（Phenophase_Name）与物候期ID（Phenophase_ID）的具体说明。 2011年3月17日，芽展观测计划的观测规程拆分为两类报告形式：常规观测（Regular Observations）与单次报告/临时观测（Single Reports/Occasional Observations）。2011年是该项目运行的第五个年度。 本次数据采集采用两类规程，分别为1）常规观测；2）单次报告/临时观测，详述如下。 常规观测：属于基于事件的监测模式，参与者需全年追踪指定植株，并记录特定物候期出现的日期。本次监测涵盖五大植物类群：落叶乔灌木、野生花卉与草本植物、常绿乔灌木、针叶树以及禾草类植物。 单次报告/临时观测：属于基于状态的监测模式，参与者可在特定时间点记录观测到的植株状态，亦可提交空值记录。2011年，单次报告/临时观测仅适用于野生花卉与草本植物、落叶乔灌木以及禾草类植物；当年无法为“其他”类别的植株提交此类报告。 芽展观测计划所采集的数据，旨在助力科学家深入探究不同尺度（本地、区域乃至全国）下植物物种个体对气候变化的响应规律。 有关芽展观测计划的更多详细信息，可访问官网budburst.org查阅。