Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2016 Jul 8;6:29612. doi: 10.1038/srep29612

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2016, Macmillan Publishers Limited

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/

PMC Copyright notice

The outlines with numbers represent for different heavy aerosol pollution regions in China. 1 represents for the North China Plain region (NCP); 2 for the Yangtze River Delta region (YRD); 3 for the central eastern China (CEC); and 4 for the Si Chuan Basin (SCB). The map was generated by the IDL software version IDL 8.1 (Exelis, USA), http://www.exelisvis.com/.