Supported by the National Key Basic Research and Development (973) Program of China (2006CB403705);Natural Science Key Research Program of Jiangsu Province (09KJA170004);Natural Science Foundation of Hebei Province (D2009001338)
Solar radiation is an important energy source for plants on the earth and also a major component of the global energy balance. Variations in solar radiation incident at the earth’s surface profoundly affect the human...