Database_Nova Lima_Remote Sensing

Data collection was carried out through the acquisition of images from the Landsat 8 satellite obtained from the Earth Explorer platform, from the United States Geological Survey (USGS, 2023). The images were obtained for the years 2013, 2018 and 2023, for the purpose of evaluating the temporal evolution of vegetation and land use and occupation in the study area considering a period of 10 years. One image was selected for each year, corresponding to the dry period, totaling three images. As pointed out by Pereira et al., (2020), precipitation can influence responses to vegetation indices. Therefore, the choice to analyze images from the same period aims to eliminate interpretations of changes in indices due to different climatic conditions.

本数据集通过获取美国地质调查局（United States Geological Survey，USGS）地球探索者（Earth Explorer）平台收录的陆地卫星8号（Landsat 8）影像完成数据采集，数据引自USGS 2023年公开资源。本次采集涵盖2013年、2018年与2023年三个年份的影像，旨在评估研究区域10年间植被与土地利用/覆被的时间演变特征。每年选取一幅对应旱季的影像，共计三幅。正如佩雷拉等人（2020）指出，降水会对植被指数（vegetation indices）的响应产生影响。因此，选择同期影像开展分析，旨在消除因气候条件差异导致的植被指数变化解读偏差。