Institute of Agriculture Resoures and Environment;
Heilong]iang University;
Harbin 150080;
P.R. China;
Northeast Institute of Geography and Agri-Ecology;
Chinese Academy of Sciences;
Harbin 150040;
P.R.China;
Shenyang Institute of Atmospheric Environment;
Chinese Meteorological Administration;
Shenyang 110016;
P.R.China;
Shenyang Institute of Applied Ecology;
Chinese Academy of Sciences;
Shenyang 110016;
P.R.China;