File:Global Vegetation.jpg

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摘要

描述 Food, fuel and shelter: vegetation is one of the most important requirements for human populations around the world. Satellites monitor how "green" different parts of the planet are and how that greenness changes over time. These observations help scientists understand the influence of natural cycles, such as drought and pest outbreaks, on vegetation, as well as human influences, such as land-clearing and global warming.
日期 This image shows NDVI from Nov. 1, 2007, to Dec. 1, 2007, during autumn in the Northern Hemisphere.
来源 Archive of Image of the Day
作者 Image Credit: NASA

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Public domain 本文件完全由NASA创作,在美国属于公有领域。根据NASA的版权方针,NASA的材料除非另有声明否则不受版权保护。(参见Template:PD-USGov/zhNASA版权方针页面JPL图片使用方针。)
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当前2008年4月13日 (日) 08:352008年4月13日 (日) 08:35版本的缩略图1,024 × 768(78 KB)Auréola{{Information |Description=Food, fuel and shelter: vegetation is one of the most important requirements for human populations around the world. Satellites monitor how "green" different parts of the planet are and how that greenness changes over time. Thes

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