of;
Geographic;
Sciences;
and;
Natural;
Resources;
Research;
Chinese;
Academy;
of;
Sciences;
Beijing;
100101;
P.R.;
China;
of;
Chinese;
Academy;
of;
Sciences;
Beijing;
100049;
P.R.China;
Laboratory;
of;
Crop;
Nutrition;
and;
Fertilization;
Ministry;
of;
Agriculture/Institute;
of;
Agricultural;
Resources;
and;
Regional;
Planning;
Chinese;
Academy;
of;
Agricultural;
Sciences;
Beijing;
100081;
P.R.;
China;
土壤微生物群落; 群落功能多样性; 草原生态系统; 年降水量; 群落组成; 年际变化; 施氮; 中国;