of;
Tibetan;
Environment;
Changes;
and;
Land;
Surface;
Processes;
(TEL),;
Institute;
of;
Tibetan;
Plateau;
Research,;
Chinese;
Academy;
of;
Sciences,;
Beijing;
100085,;
China;
Laboratory;
of;
Western;
China's;
Environmental;
Systems,;
Ministry;
of;
Education;
&;
College;
of;
Resources;
and;
Environment,;
Lanzhou;
University,;
Lanzhou;
730000,;
China;
东亚夏季风; 中国黄土高原; 花粉记录; 上新世; 黄土高原北部; 早期; 草原生态系统; 古气候变化;