%0 Journal Article
%T Effects of different land management practices on black soil microbial biomass C and enzyme activities<br>不同土地管理方式对黑土土壤微生物量碳和酶活性的影响
%A WANG Guang-hua
%A JIN Jian
%A HAN Xiao-zeng
%A LIU Ju-dong
%A LIU Xiao-bing
%A <br>王光华
%A 金剑
%A 韩晓增
%A 刘居东
%A 刘晓冰
%J 应用生态学报
%D 2007
%I 
%X In a long-term experimental plot at the Hailun Agricultural Ecology Station of Chinese Academy of Sciences in Heilongjiang Province, Northeast China, the effects of three land management practices including natural restoration, fallowing and cropping on black soil microbial biomass C and enzyme activities at the depths of 0-10, 20-30 and 40-50 cm were investigated. The results showed that at 0-10 cm, soil microbial biomass C and soil urease, phosphatase, catalase and invertase activities were in the sequence of natural restoration > cropping > fallowing, while at 20-30 cm and 40-50 cm, they had less significant differences as those at 0-10 cm. Under natural restoration and cropping, soil microbial biomass C and soil urease, phosphatase and catalase activities decreased with increasing soil depth, while under fallowing, they were higher at 20-30 cm. Correlation analysis showed that there existed significant positive correlations between soil total C and total N, soil total C and microbial biomass C, and soil microbial biomass C and test enzyme activities. The indices soil microbial biomass C and soil enzyme activities showed that black soil under long-term natural restoration had better soil quality.
%K black soil
%K natural restoration
%K fallowed bare land
%K cropping
%K soil depth<br>黑土
%K 自然恢复
%K 休闲裸地
%K 种植作物
%K 土壤深度
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=D2139E7B17EF5346&yid=A732AF04DDA03BB3&vid=13553B2D12F347E8&iid=B31275AF3241DB2D&sid=207818BDA03879A7&eid=B9CA56463DAD3251&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=16&reference_num=17