应用生态学报2013，Vol.24Issue(3)：607-613,7.
北京地区栓皮栎和油松人工林土壤团聚体稳定性及有机碳特征
Soil aggregate stability and soil organic carbon characteristics in Quercus variabilis and Pinus tabulaeformis plantations in Beijing area
摘要
Abstract
Based on the field survey and laboratory analysis, this paper studied the soil aggregate stability and soil organic carbon characteristics in Quercus variabilis and Pinus tabulaeformis plantations in Beijing area.In the two plantations, the contents of soil macro-aggregates decreased with soil depth.In P.tabulaeformis plantation, soil macro-aggregates (>0.25 mm) occupied the majority, accounting for 71% -77% of the total; whereas in Q.variabilis plantation, no significant difference was observed in the contents of soil macro-aggregates and micro-aggregates (≤0.25 mm) , which accounted for 51% -58% and 42% -49% , respectively.Both the mean mass diameter and the geometrical mean mass diameter of the soil aggregates in P.tabulaeformis plantation were significantly higher than those in Q.variabilis plantation, and the fractal dimension ( D) of the soil water-stable aggregates in P.tabulaeformis plantation was lower than that in Q.variabilis plantation, suggesting that P.tabulaeformis plantation was more favorable for the soil aggregate stability than Q.variabilis plantation.Also in the two plantations, the organic carbon content in soil water-stable aggregates decreased with soil depth.The organic carbon content in soil macro-aggregates was significantly higher in P.tabulaeformis plantation (58%-83% ) than in Q.variabilis plantation (49% -66% ).It was suggested that in Beijing area, P.tabulaeformis plantation was more beneficial to the soil organic carbon protection, as compared with Q.variabilis plantation.关键词
人工林/水稳性团聚体/土壤团聚体稳定性/土壤有机碳/北京Key words
forest plantation/ water-stable aggregate/ soil aggregate stability/ soil organic carbon/Beijing分类
农业科技引用本文复制引用
刘艳,查同刚,王伊琨,王高敏..北京地区栓皮栎和油松人工林土壤团聚体稳定性及有机碳特征[J].应用生态学报,2013,24(3):607-613,7.基金项目
中央高校基本科研业务费专项(BLYX200925,TD201103)资助. （BLYX200925,TD201103）
