^pKey;
Laboratory;
of;
Urban;
and;
Regional;
Ecology,;
Research;
Center;
for;
Eco-Environmental;
Sciences,;
Chinese;
Academy;
of;
Sciences,;
Beijing;
100085,;
China;
^pLaboratory;
of;
Systematic;
Mycology;
and;
Lichenology,;
Institute;
of;
Microbiology,;
Chinese;
Academy;
of;
Sciences,;
Beijing;
100101,;
China;
甲烷氧化菌; 旱地土壤; 土地利用方式; 社区; rRNA基因; 农业生产活动; 变性梯度凝胶电泳; 速效钾含量;