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. 2017 Aug 15;16:31. doi: 10.1186/s12942-017-0104-x

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© The Author(s) 2017

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. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Fig. 2 — a Mean spatial effects (SE) $w_{i}$ (2008) and $u_{i}$ (2009, 2010, and 2014) from the selected models at annual aggregation scale; b mean space-varying NDVI coefficients ( $β_{1} + b_{i, 1}$ ); and c discretized space-varying (DSV) NDVI coefficients ( $β_{1} + b_{i, 1}$ ) for years 2011, 2012, 2013, 2015, from models at annual aggregation scale