Globe-LFMC, a global plant water status database for vegetation ecophysiology and wildfire applications

Globe-LFMC is an extensive global database of live fuel moisture content (LFMC) measured from 1,383 sampling sites in 11 countries: Argentina, Australia, China, France, Italy, Senegal, Spain, South Africa, Tunisia, United Kingdom and the United States of America. The database contains 161,717 individual records based on in situ destructive samples used to measure LFMC, representing the amount of water in plant leaves per unit of dry matter. The primary goal of the database is to calibrate and validate remote sensing algorithms used to predict LFMC. However, this database is also relevant for the calibration and validation of dynamic global vegetation models, eco-physiological models of plant water stress as well as understanding the physiological drivers of spatiotemporal variation in LFMC at local, regional and global scales. Globe-LFMC should be useful for studying LFMC trends in response to environmental change and LFMC influence on wildfire occurrence, wildfire behavior, and overall vegetation health.<br><b>Change Notice - Globe-LFCM-v2.xlsx </b><b>:</b>Some site’s coordinates from Spain and California were affected by a wrong transformation between coordinate reference systems.<br>The original Spanish UTM coordinates were mistakenly considered to be in the geodetic datum WGS84 instead of the ED50 datum. Thus, those original coordinates have been transformed again, using the correct datum.The original Californian UTM coordinates were mistakenly considered to be in the geodetic datum WGS84 instead of the NAD27 datum. Thus, those original coordinates have been transformed again, using the correct datum.<br>As a consequence of these changes, the columns “Land Cover”, “NDVI CV min”, “NDVI CV max”, “NDVI SD min”, “NDVI SD max” have been corrected and updated.

Globe-LFMC是一个大规模的全球活体燃料含水率（live fuel moisture content, LFMC）数据库，其数据源自11个国家的1383个采样站点：阿根廷、澳大利亚、中国、法国、意大利、塞内加尔、西班牙、南非、突尼斯、英国以及美利坚合众国。该数据库包含161717条独立记录，均基于原位破坏性采样以测定LFMC，即单位干物质中植物叶片的含水量。该数据库的核心目标是对用于预测LFMC的遥感算法进行校准与验证。此外，该数据库还可用于动态全球植被模型、植物水分胁迫生态生理模型的校准与验证，以及探究局地、区域乃至全球尺度下LFMC时空变化的生理驱动机制。Globe-LFMC可用于研究环境变化驱动下的LFMC变化趋势，以及LFMC对野火发生、野火行为及整体植被健康状况的影响。<br><b>变更说明 - Globe-LFCM-v2.xlsx</b><b>:</b> 西班牙与加利福尼亚州的部分站点坐标因坐标参考系统间的错误转换出现偏差。原西班牙通用横轴墨卡托（Universal Transverse Mercator, UTM）坐标被误当作WGS84大地基准下的坐标，而非ED50大地基准，因此已基于正确的大地基准对这些原始坐标进行了重新转换。原加利福尼亚州通用横轴墨卡托（Universal Transverse Mercator, UTM）坐标被误当作WGS84大地基准下的坐标，而非NAD27大地基准，因此已基于正确的大地基准对这些原始坐标进行了重新转换。受此次变更影响，"土地覆盖（Land Cover）"、"归一化植被指数变异系数最小值（NDVI CV min）"、"归一化植被指数变异系数最大值（NDVI CV max）"、"归一化植被指数标准差最小值（NDVI SD min）"以及"归一化植被指数标准差最大值（NDVI SD max）"等列已完成修正与更新。

搜集汇总

背景与挑战

背景概述

Globe-LFMC是一个全球植物水分状态数据库，包含来自11个国家、1,383个采样点的161,717条活体燃料水分含量(LFMC)记录，主要用于校准遥感算法和研究植被生态生理学及野火应用。