国家自然科学基金项目31560397, 31460356, 31660401, 31560072;甘肃省自然科学基金项目145RJZG050, 1506RJZG051;甘肃省河西走廊特色资源利用重点实验室面上项目XZ1403资助.This study was supported by the National Natural Science Foundation of China31560397, 31460356, 31660401, 31560072;the Gansu Provincial Natural Science Foundation145RJZG050, 1506RJZG051;Gansu Province Key Laboratory Program of Hexi Corridor Re-sources UtilizationXZ1403