LBA-ECO ND-01 Land Cover Classification, Rondonia, Brazil: 1975-2000

This data set provides a time series of land cover classifications for Ariquemes, Ji-Parana, and Luiza, research sites in Rondonia, Brazil. The land cover classifications are derived from the Landsat Multispectral Scanner (MSS), Thematic Mapper (TM), and Enhanced Thematic Mapper Plus (ETM+) sensors. The time period ranges from June 1975 through June 2000, but all areas do not have images for all the years.

The images were classified into the following categories: 1. Primary upland forest, representing the dominant natural vegetation in the area; 2. Pasture and green pasture; 3. Second growth, dominated by small trees and shrubs with low species diversity and biomass relative to primary forest; 4. Soil/urban; 5. Rock/savanna; 6. Water; and 7. Cloud and smoke obscured. In addition, areas covered by rock and savanna were mapped and all areas outside of the overlap zone between all dates within a scene, and scene edges, were masked.

There are 75 GeoTIFF files (.tif) with this data set which includes: classified images (*ful.tif) and a corresponding image mask (*ful_mask .tif) for each date (with the exception of 1978 and 1996 images for Ji-Parana, for which there are only ful_mask.tif files), and three mask files for rock, savannah, and scene edges, for each area. By area, there are 31 images for Ariquemes, 23 images for Ji-Parana, and 21 images for Luiza.

本数据集提供巴西朗多尼亚州（Rondônia）境内阿里克米斯（Ariquemes）、吉-帕拉纳（Ji-Parana）与路易萨（Luiza）三个研究站点的土地覆盖分类时间序列数据。该土地覆盖分类结果基于陆地卫星多光谱扫描仪（Landsat Multispectral Scanner, MSS）、专题制图仪（Thematic Mapper, TM）以及增强型专题制图仪Plus（Enhanced Thematic Mapper Plus, ETM+）传感器获取的影像生成。数据时间跨度为1975年6月至2000年6月，但并非所有区域在所有年份均拥有可用影像。

本次分类将影像划分为以下7类：1. 原生高地森林：代表区域内的优势自然植被；2. 牧场与青绿牧场；3. 次生林：以小树与灌木为主，物种多样性与生物量均低于原生林；4. 土壤/城镇用地；5. 岩石/稀树草原；6. 水体；7. 云与烟雾遮挡区域。此外，研究人员对岩石与稀树草原覆盖区域进行了制图，并对场景内所有日期的共同重叠区域之外的区域以及场景边缘实施了掩膜处理。

本数据集共包含75个GeoTIFF格式（.tif）文件，具体包括：各日期的分类影像（*ful.tif）及其对应的影像掩膜文件（*ful_mask.tif），其中吉-帕拉纳站点1978年与1996年的影像仅提供ful_mask.tif文件；此外每个研究区域还配有3个专用掩膜文件，分别对应岩石、稀树草原及场景边缘。按研究区域统计，阿里克米斯站点共有31幅影像，吉-帕拉纳站点有23幅影像，路易萨站点有21幅影像。