植物营养与肥料学报2001，Vol.7Issue(1)：56-63,8.
土壤生物活性有机碳库及其表征指标的研究征指标的研究
The size and characterization of biologically active organic carbon pool in soils
摘要
Abstract
To study the size and turnover of the biologically active soilorganic carbon pool, which indicate nutrients supplying capacity and cycling in soil, eleven soils collected from Zhejiang Province were used. The size of the biologically active soil organic carbon pool C0 ranged from 184.87 to 3022.41mg/kg and 2.91%～8.94% of total soil organic carbon. The turnover rate (k) of biologically active soil organic carbon pool was 0.0070～0.0199d-1. C0 has significantly positive correlations with total soil organic carbon , total nitrogen, available nitrogen, CEC, K2Cr2O7 readily oxidized organic carbon, soil microbial biomass carbon, soil microbial biomass nitrogen, water-soluble organic carbon, hot-water extracted organic carbon and light fraction organic carbon,but k has no correlation with all items above (P＜0.05). C0 has no correlation with the percentages of K2Cr2O7 readily oxidized organic carbon, soil microbial biomass carbon, soil microbial biomass nitrogen, hot-water extracted organic carbon and light fraction organic carbon to total soil organic carbon. However, k has significantly positive correlation with the percen tage of water-soluble organic carbon to total soil organic carbon (R2=0.4684 , P＜0.025). The percentage of water-soluble organic carbon to soil total organic carbon was a good indicator to characterize the turnover of biologically active soil organic carbon pool.关键词
土壤生物活性有机碳库/周转速率/指标Key words
biologically active soil organic carbon pool/turnover rate/indicator分类
农业科技引用本文复制引用
倪进治,徐建民,谢正苗..土壤生物活性有机碳库及其表征指标的研究征指标的研究[J].植物营养与肥料学报,2001,7(1):56-63,8.基金项目
国家重点基础研究发展规划项目课题（G1999011809）；国家自然科学基金项目（39670421）；浙江省自然科学基金项目（496027）资助。 （）
