2000-2017年安西自然保护区植物光谱多样性

四个自然保护区草原植物多样性遥感估测数据是年度合成产品，是基于Landsat ETM计算得到，点提取每个1km2内间隔50m的9个像素作为alpha多样性样方，计算其光谱多样性指数，估测alpha多样性；9个像素之间植物多样性信息的差异性作为beta多样性指数。空间分辨率为1000米，时间分辨率为5Y。数据是在ArcGIS环境下，结合上述数据源，按照内容和区域，采用专题制图的方式完成的。主要环节包括数据收集与整理、数据格式及投影方式规范化。

The remote sensing estimation dataset of grassland plant diversity in four nature reserves is an annual composite product, calculated based on Landsat ETM data. Nine pixels spaced 50 meters apart within each 1 km² area were extracted as alpha diversity quadrats, whose spectral diversity indices were calculated to estimate alpha diversity; the difference in plant diversity information among these nine pixels was used as the beta diversity index. This dataset has a spatial resolution of 1000 meters and a temporal resolution of 5Y. It was developed via thematic mapping in the ArcGIS environment, integrating the aforementioned data sources in line with the study content and regional scope. The core processing workflows include data collection and organization, as well as standardization of data formats and projection methods.