volume 12, issue 4, P667-685 1998
DOI: 10.1029/98gb02512
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Abstract: Abstract. Human activities have shaped significantly the state of terrestrial ecosystems throughout the world. One of the most direct manifestations of human activity within the biosphere has been the conversion of natural ecosystems to croplands. In this study, we present an analysis of the geographic distribution and spatial extent of permanent croplands. This analysis represents the area in permanent croplands during the early 1990s for each grid cell on a global 5 min (-10 km) resolution latitude-longitud…

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