2023-05-04T13:11:58.897426

2024-10-04T16:27:46.485286

30 x 30m

South America

Annual

regional

Source: Song et. al. 2021. “Soy Planted Area”. Accessed through Global Forest Watch on [date].

Soy Planted Area

Song, X.P., M.C. Hansen, P. Potopov, B. Adusei, J. Pickering, M. Adami, A. Lima, V. Zalles, S.V. Stehman, D.M. Di Bella, C.M. Cecilia, E.J. Copati, L.B. Fernandes, A. Hernandez-Serna, S.M. Jantz, A.H. Pickens, S. Turubanova, and A. Tyukavina. 2021. Massive soybean expansion in South America since 2000 and implications for conservation.

English

This data set provides a spatially-explicit overview of the annual planted area of soybean cultivation across South America’s agricultural frontiers, as described in Song et. al. (2021). Data is available annually from 2000 to 2019 at a 30m spatial resolution for the following biomes: Amazonia, Atlantic Forest, Caatinga, Cerrado, Chaco, Chiquitania, Pampas, and Pantanal.<br><br>Song et. al. (2021) integrates long-term satellite imagery with three years of continent-wide field observations to produce annual maps of soybean cultivation. Researchers collected Landsat and MODIS imagery for November 1 through April 30 of each growing season and created 16-day time-series with phenological metrics. These metrics were combined with data on elevation, slope, and aspect and training data from 225 sampling areas to develop soybean probability maps for each year. The field observations were then used to assess the accuracy of the resulting maps, which are constrained to match the areas of field observations. <br><br>This dataset addresses the absence of long-term, consistent government statistics by expanding the spatial and temporal scope of previous maps of soybean cultivation. The maps and workflow described in Song et. al. (2021) provides key historical baseline information for tracking commodity-driven deforestation and highlights emerging hotspots of soybean expansion.

Provides a long-term, continental perspective of soybean expansion at a high spatial resolution

- Each yearly threshold refers to harvest year. For example, 2001 refers to the 2000-2001 agricultural season.<br>- The accuracy of the 2017, 2018, and 2019 maps were assessed as 96%, 94%, and 96%, respectively. The soy class had 8-14% rate of false positives, and a 14-17% rate of false negatives. The accuracy of the maps from previous years could not be assessed, but was found to generally match total annual harvest area statistics reported by the US Department of Agriculture.

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