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. 2016 Jun 7;11:9. doi: 10.1186/s13021-016-0050-0

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© The Author(s) 2016

Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

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Fig. 3 — Results of the sampling and upscaling. a Estimated ACD using a 15 km systematic grid sampling approach, b percent relative difference between model ACD (from Fig. 1a) and a, c ACD using a 1-plot stratified sampling approach, d percent relative difference between model ACD and c, e ACD using random forest upscaling trained with 15 km systematic sampling grid and f percent relative difference between model ACD and (e)