陇东黄土高原农田土壤微生物量碳和颗粒有机碳剖面分布特征
李玉进 ; 王百群 ; 丁婷婷
刊名水土保持研究
2013
卷号20期号:06页码:1-05
关键词黄土高原 Loess Plateau 黑垆土 dark loessial soil 微生物量碳 microbial biomass carbon 颗粒有机碳 particulate organic carbon 分布特征 distribution
其他题名Profile Distribution Characteristics of Microbial Biomass Carbon and Particulate
中文摘要采用野外调查采样与室内分析相结合的方法,对陇东黄土高原农田黑垆土微生物量碳(MBC)和颗粒有机碳(POC)的剖面分布特征进行了研究。结果表明:不同剖面土壤微生物量碳和颗粒有机碳含量随土层变化差异显著或极显著,主要集中在0—20cm和20—40cm土层,呈明显的表聚现象;0—60cm土层MBC含量随着土层深度增加而减小;随着海拔高度增加,0—20cm土层MBC含量整体呈增加趋势,变化范围为180.92~282.53mg/kg;POC含量在0—20cm和20—40cm土层的变化范围分别为1.02~1.68g/kg和0.25~0.96g/kg,40cm以下土层颗粒有机碳含量较低;剖面中不同土层深度微生物量碳、颗粒有机碳占总有机碳(SOC)的比例在0—20cm和20—40cm土层均显著或极显著高于其它土层,MBC/SOC变化范围分别为2.29%~3.70%和1.00%~2.11%,POC/SOC的变化范围分别为13.46%~19.13%和5.08%~16.16%,剖面MBC/SOC与MBC、POC/SOC与POC随土层的变化规律均一致,MBC/SOC和POC/SOC可以作为反映土壤剖面质量变化... 更多
英文摘要Abstract:Combining field sampling with laboratory analysis,we studied the soil profile distribution of microbial biomass
 carbon(MBC)and particulate organic carbon(POC)of dark loessial soil in farmland in East Gansu Province
 of Loess Plateau.The results showed that the contents of MBC and contents of POC were significantly
different with the soil layer changes,which mainly distributed in 0—20cm and 20—40cm soil layers,mostly
distributed in the top soil layer.The contents of MBC decreased with the soil depth increase in 0—60cm soil
layer.With the altitude increase,the contents of MBC had the relative increase tendency in 0—20cm soil
layer with the range of 180.92~282.53mg/kg.The contents of POC were in the range of 1.02~1.68g/kg
and 0.25~0.96g/kg in the of 0—20cm and 20—40cm soil layers,respectively,which were lower below 40
cm soil layer than those in the upper layers;with respect to the proportion MBC and POC to soil organic carbon(
SOC),the percentages of MBC/SOC and POC/SOC in the 0—20cm and 20—40cm soil layesr were significantly
 higher than the others,MBC/SOC varied from 2.29%to 3.70%and 1.00%to 2.11%,respectively,
POC/SOC varied from 13.46%~19.13%and 5.08%~16.16%in these two layers,respectively.With the soil layer increase,the trends of MBC/SOC and POC/SOC were consistent with that of MBC and POC.
MBC/SOC and POC/SOC can be served as indexes to reflect the soil quality changes along profile.
语种中文
公开日期2014-10-15
内容类型期刊论文
源URL[http://ir.iswc.ac.cn/handle/361005/5532]  
专题水土保持研究所_水保所知识产出(1956-2013)
推荐引用方式
GB/T 7714
李玉进,王百群,丁婷婷. 陇东黄土高原农田土壤微生物量碳和颗粒有机碳剖面分布特征[J]. 水土保持研究,2013,20(06):1-05.
APA 李玉进,王百群,&丁婷婷.(2013).陇东黄土高原农田土壤微生物量碳和颗粒有机碳剖面分布特征.水土保持研究,20(06),1-05.
MLA 李玉进,et al."陇东黄土高原农田土壤微生物量碳和颗粒有机碳剖面分布特征".水土保持研究 20.06(2013):1-05.
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