国家自然科学基金51005225;中国科学院百人计划、甘肃省科技支撑计划1204FKCA180;甘肃省科技计划项目1107RJYA002;The project was supported by the National Natural Science Foundation of China51005225;the Top Hundred Talents Program of Chinese Academy of Sciences,Gansu Province Science and Technology Support Program1204FKCA180;the Plan of Gansu Science and Technology1107RJYA002