南京林业大学学报（自然科学版）2012，Vol.36Issue(3)：69-73,5.
不同连栽代次及龄组杨树林土壤微生物量氮动态
The dynamics of soil microbial biomass nitrogen of poplar plantation with different stand ages and rotations
摘要
Abstract
Different stand ages and rotations polar plantation sites were selected for investigating the dynamics and the distribution characteristics of soil microbial biomass nitrogen (SMBN) from February 2009 to December 2009. The results showed that SMBN annual change dynamics of all experimental sites was similar. The content of SMBN at February were the lowest and the average contents of all sites at different soil profiles were 48. 36 mg/kg(0 - 10 cm) ,38. 74 mg/kg(10-20 cm) and 22.64 mg/kg (20-40 cm), while the content of SMBN at October were the highest and the average contents of all sites at different soil profiles were 23. 32 mg/kg (0-10 cm) , 17. 91 mg/kg (10-20 cm) and 8.18 mg/kg (20 -40 cm) , respectively. With stand age and rotation of poplar plantation increase, SMBN content decreased. The results also displayed that SMBN content decreased with soil profile depth increase, SMBN average content at 0 - 10 cm was 11.50 mg/kg and 24.83 mg/kg higher than that at 10 - 20 cm and 20 - 40 cm for CK, 13.40 mg/kg and 25.30 mg/kg for Fl, 9.34 mg/kg and 19.53 mg/kg for F2, 7.17 mg/kg and 19.00 mg/kg for SI, 5. 65 mg/kg and 14.48 mg/kg for S2, respectively. The correlation analysis indicated that there existed significant correlations between SMBN and soil total nitrogen and organic matter ( correlation coefficient were respectively 0. 665 4 and 0.829 6).关键词
杨树人工林/土壤微生物量氮/年动态变化/土壤剖面分布Key words
poplar plantation/ soil microbial biomass nitrogen(SMBN) / annual change dynamics/ soil profile distribution分类
农业科技引用本文复制引用
王艮梅,韦庆翠,袁润,张焕朝,王福好,颜开义..不同连栽代次及龄组杨树林土壤微生物量氮动态[J].南京林业大学学报（自然科学版）,2012,36(3):69-73,5.基金项目
国家自然科学基金项目(30872015) （30872015）
高等学校博士学科点专项科研基金项目(200802980002) （200802980002）
