%0 Journal Article
%T Quantitative characters of soil microbes and microbial biomass under different vegetations in alpine meadow<br>高寒草甸不同植被土壤微生物数量及微生物生物量的特征
%A WANG Qi-lan
%A CAO Guang-min
%A WANG Chang-ting
%A <br>王启兰
%A 曹广民
%A 王长庭
%J 生态学杂志
%D 2007
%I 
%X By using dilute plate counting and chloroform fumigation methods, this paper studied the quantitative characters of soil microbes, microbial biomass, and organic matter under the vegetations Kobresia tibetica , K. pygmaea , K. humulis , grass, forb, and Potentilla fruticosa shrub in alpine meadow ecosystem. The results showed that in 0-40 cm soil layer, the numbers of bacteria and actinomyces and the contents of microbial biomass C and organic matter were the highest in K. tibetica meadow, while the fungal number was the highest in P. fruticosa shrub meadow. The microbial biomass C and organic matter contents in K. tibetica meadow were obviously higher than those in the other five meadows. Path analysis indicated that there were varied degrees correlations among different bio-environmental factors, and the numbers of soil microbes as well as the contents of soil microbial biomass C and organic matter had significant correlations with soil moisture content, indicating that soil moisture could soil microbes and the transformation of substances in be a key factor regulating the metabolism of alpine meadow ecosystem.
%K alpine meadow
%K soil microbe
%K microbial biomass
%K soil organic matter<br>高寒草甸
%K 土壤微生物
%K 微生物生物量
%K 土壤有机质
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=B04840A985D251F36078BD07A90EF003&aid=5D195446CBDB3E1C&yid=A732AF04DDA03BB3&vid=96C778EE049EE47D&iid=DF92D298D3FF1E6E&sid=15A3E3A739C4EF3F&eid=82BCA4C44409DD5C&journal_id=1000-4890&journal_name=生态学杂志&referenced_num=2&reference_num=25