Sunshine Duration Variation and its Influence Factors in Shandong Province
DONG Xu guang,QIU Can,LIU Huan bin,MENG Xiang xin,WANG Dong cheng,WANG Jing,CAO Jie
Chinese Journal of Agrometeorology . 2013, (02): 138 -145 .  DOI: 10.3969/j.issn.1000-6362.2013.02.003