Google Earth Engine code

Google Earth Engine used to compute the NDVI statistics added to Globe-LFMC. The input of the program is a point shapefile (“samplePlotsShapefile”, extensions .cpg, .dbf, .prj, .shp, .shx) representing the location of each Globe-LFMC site. This shapefile is available as additional data in figshare (see Code Availability). To run this GEE code the shapefile needs to be uploaded into the GEE Assets and, then, imported into the Code Editor with the name “plots” (without quotation marks).Google Earth Engine code<br><b>Change Notice - GEE_script_for_GlobeLFMC_ndvi_stats_v2.js</b>The following acknowledgements have been added at the beginning of the code: “Portions of the following code are modifications based on work created and shared by Google in Earth Engine Data Catalog and Earth Engine Guides under the Apache 2.0 License. https://www.apache.org/licenses/LICENSE-2.0”<br><br><br><b>Change Notice - samplePlotsShapefile_v2</b><br>The shapefile describing the database sites has been corrected and updated with the correct coordinates.<br>

本研究借助谷歌地球引擎（Google Earth Engine, GEE）计算归一化植被指数（Normalized Difference Vegetation Index, NDVI）统计量，并将其添加至Globe-LFMC数据集。本程序的输入为代表各Globe-LFMC站点位置的点位形状文件（文件名为"samplePlotsShapefile"，配套扩展文件包含.cpg、.dbf、.prj、.shp、.shx）。该形状文件可于figshare的补充数据中获取（详见代码可用性说明）。运行该GEE代码前，需将此形状文件上传至GEE资源库，并以"plots"（不含引号）为名导入代码编辑器。<br>谷歌地球引擎代码<br><b>更新说明 - GEE_script_for_GlobeLFMC_ndvi_stats_v2.js</b><br>已在代码开头添加如下致谢内容："本代码部分内容基于谷歌在地球引擎数据目录与地球引擎指南中创建并共享的作品修改而来，遵循Apache 2.0开源许可协议。https://www.apache.org/licenses/LICENSE-2.0"<br><br><br><b>更新说明 - samplePlotsShapefile_v2</b><br>已对描述该数据库站点的形状文件进行修正与更新，修正了其中的坐标信息。