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. 2016 Oct 21;6:35530. doi: 10.1038/srep35530

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Copyright © 2016, The Author(s)

This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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The colour of the circles indicates the magnitude of change. Solid circles with point indicate significance level of p < 0.05, whereas solid circles are p > 0.05. Maps in this figure were generated though the ArcGIS 9.3 software provided Environmental Systems Research Institute (http://www.esri.com).