国家自然科学基金41571287,31000209;福建省科技厅重点项目2014Y0054;福州市科技计划项目No.2014-G-66Supported by the National Natural Science Foundation of China41571287,31000209;the Key Program of Scienece and Technology Agency of Fujian Province2014Y0054;the Science and Technology Planning Project of Fuzhou2014-G-66