期刊论文

中文

环境科学

0250-3301

2013

34

4

1576-1582

10.13227/j.hjkx.2013.04.011

国家自然科学基金项目（41001141,31100381）； “十二五”国家科技支撑计划项目（2012BAD14B17）；

本校为第一机构

土壤微生物生物量碳是稻田土壤有机质最具活性的组分之一,可有效地指示土壤质量状况.为探明亚热带地区不同类型稻田土壤微生物生物量碳的剖面分布特征及其与土壤有机碳及养分的关系,通过选取5种不同母质发育的稻田土壤,采集土壤发生层次分层样品,分析其有机碳、微生物生物量碳以及土壤养分的分布特点.结果表明,土壤有机碳和微生物生物量碳含量均随土壤深度的加深而急剧下降,分别介于2.45～26.19 g.kg-1和4.55～1 691.75 mg.kg-1,以耕作层和犁底层的含量最为丰富.不同母质发育的稻田表层土壤微生物生物量碳含量存在显著差异,以板岩风化物发育的黄泥田Ⅰ最高,河沙泥和红黄泥最低;而有机碳含量却以...

The soil microbial biomass carbon (C(mic)), one of the most active components of soil organic carbon (C(org)), is an effective indicator of soil quality. In the present study, five subtropical paddy soils developed from different parent materials were selected, and the distribution of C(mic) through the profiles was studied, as well as the relationship of C(mic) with C(org) and soil nutrients. The results showed that the contents of C(org) and C(mic) decreased markedly with increasing soil depth, ranging from 2.45 g x kg(-1) to 26.19 g x kg(-1) and from 4.55 mg x kg(-1) to 1 691.75 mg x kg(-1)...