Documentation for the Global Man-made Impervious Surface (GMIS) Dataset From Landsat
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Urbanization is an important driver of change across our home planet. With over half of the world’s population living in urban areas today, the mapping and monitoring of urbanization is critical to understanding these changes and their potential impacts. The availability of high resolution, free satellite imagery at multiple epochs from the Global Land Survey (GLS) Landsat archive provides great opportunities to map global man-made surfaces and extent in unprecedented detail. The Global Man-made Impervious Surface (GMIS) Dataset From Landsat consists of global estimates of fractional impervious cover derived from the GLS Landsat dataset for the target year 2010. The GMIS dataset consists of two components: 1) global percent of impervious cover
城市化是驱动我们赖以生存的地球发生变化的重要动力。当前全球已有超过半数人口居住于城市区域,因此对城市化进程开展制图与监测,对于理解此类变化及其潜在影响至关重要。来自全球土地调查(Global Land Survey, GLS)陆地卫星(Landsat)档案库的多时相高分辨率免费卫星影像,为以前所未有的精细程度绘制全球人工地表及其分布范围提供了绝佳契机。基于陆地卫星的全球人工不透水面(Global Man-made Impervious Surface, GMIS)数据集,是以2010年为目标年份,从GLS陆地卫星数据集提取得到的全球分率不透水面覆盖度估算产物。该GMIS数据集包含两个组成部分:1)全球不透水面覆盖百分比数据



