Farming the planet: 2. Geographic distribution of crop areas, yields, physiological types, and net primary production in the year 2000

Croplands cover ∼15 million km 2 of the planet and provide the bulk of the food and fiber essential to human well‐being. Most global land cover data sets from satellites group croplands into just a few categories, thereby excluding information that is critical for answering key questions ranging from biodiversity conservation to food security to biogeochemical cycling. Information about agricultural land use practices like crop selection, yield,...