Farming the planet: 2. Geographic distribution of crop areas, yields, physiological types, and net primary production in the year 2000
作者： Chad Monfreda , Navin Ramankutty , Jonathan A. Foley
DOI: 10.1029/2007GB002947
关键词: Food security 、 Agroforestry 、 Agricultural land 、 Land use 、 Geography 、 Ecology 、 Agriculture 、 Land cover 、 Primary production 、 Global change 、 Plant cover
摘要: … ∼15 million km 2 of natural vegetation into cropland and … [6] Here we present a detailed database of global land use … 206 countries, 2299 political units one level below the country …
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