%0 Journal Article
%T Soil-microbial properties in the re-vegetation process of the barren land contaminated with heavy metals<br>重金属污染土壤植被恢复过程中的土壤微生物特征
%A WANG Jiang
%A ZHANG Chong-Bang
%A <br>王江
%A 张崇邦
%J 生态学报
%D 2009
%I 
%X Litter accumulation, soil-chemical parameters, heavy metal contents and soil-microbial properties after the re-vegetation of the barren land contaminated with heavy metals were investigated. The results showed that, the re-vegetation could significantly increase soil organic carbon (18.6-31.1 g·kg-1), total nitrogen (0.88-1.56 g·kg-1) and total phosphorus (0.34-0.39 g·kg-1) in rhizosphere soils compared with the barren land. However, the litter accumulation and the above indicators did not consistently increase with the re-vegetation ages. Soil pH, the total amount of Pb, Zn and Cu and DTPA-extractable Pb, Zn and Cu in the re-vegetated soils were significantly (P < 0.05) higher than those in the barren land, and linearly increased with the re-vegetation age. The RV site had the highest levels in both soil-microbial biomass carbon and nitrogen (127.34 mg·gdw-1 and 2.45 mg·gdw-1). There was a significantly (P < 0.05) different decline in microbial biomass nitrogen in the RVI and RVII sites. The RVI site had the highest levels in soil basal respiration and functional diversity (59.10 mg·gdw-1 and 3.14) and there was a decline in the RVII site. Both the basal respiration and functional diversity had no significant difference among the four re-vegetated sites. Soil-microbial community in the barren land had a greater utilization in carboxylic acids and amines/amides, and lower utilization in carbohydrates, amino acid, polymers and miscellaneous than those in the four re-vegetated sites (P < 0.05). The PCA (principal components analysis) showed that CLPP (community level physiological profiles) in the barren land was significantly (P < 0.05) distinct from the re-vegetated sites, but had no significant difference among the four re-vegetated sites.
%K degraded barren land
%K re-vegetation
%K soil microbial biomass
%K soil basal respiration
%K functional diversity<br>退化裸地
%K 植被恢复
%K 土壤微生物量
%K 土壤基础呼吸
%K 功能多样性
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=FE163E5DB2274E5937319DE98913EC37&aid=4F3AD73BE98C1C251BEFAF7F0CDCBD0C&yid=DE12191FBD62783C&vid=771469D9D58C34FF&iid=38B194292C032A66&sid=FDDE90F0514924E3&eid=5B76AAD74B03D886&journal_id=1000-0933&journal_name=生态学报&referenced_num=0&reference_num=50