在USGS北美Packrat Midden数据库中,48-0ka的植物宏观化石数据,5.0版本
Laura E Strickland1, Robert S Thompson2, Sarah L Shafer3
1U.S. Geological Survey, Geosciences and Environmental Change Science Center, Box 25046, Mail Stop 980, Denver Federal Center, Denver, Colorado, 80225, USA. lstrickland@usgs.gov.
Scientific data
|January 12, 2024
概括
北美巴克拉特中原数据库 (版本5.0) 提供了对过去植被变化的关键见解,使用来自巴克拉特中原的植物宏观化石. 这一更新版本提高了干旱地区研究数据的可访问性.
科学领域:
- 古植物学是古植物学.
- 四分学科学 四分学科学
- 环境历史 环境历史
背景情况:
- 帕克拉特中间保存了植物宏观化石,提供了过去北美干旱植被的直接证据.
- 了解长期植被动态对于保护和适应气候变化至关重要.
研究的目的:
- 描述美国地质调查局 (USGS) 北美Packrat Midden数据库的5.0版本.
- 为古植被研究提供更新,标准化和丰富的数据集.
主要方法:
- 汇编了来自北美3,331个包中间样本的已发表和贡献的数据.
- 包括宏观化石数量,标准化的相对丰度数据,校准的放射性碳年龄和植物功能类型 (PFT) 赋值.
- 整合世界野生动物基金会对每个样本地点的生态区域,气候和生物气候数据.
主要成果:
- 数据库现在包括3,331个样本,从48,000年前到现在.
- 标准化数据和PFT分配方便跨站点的比较和分析.
- 对所有样本地点提供了地理,气候和生态背景.
结论:
- 北美Packrat Midden数据库的5.0版本是一个有价值的,全面的资源,用于研究过去的植被和干旱地区的气候变化.
- 增强的数据结构和相关的环境信息提高了它对各种研究应用的实用性.
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