Seasonal variations of soil microbial biomass carbon within the plough layer
Seasonal variations of soil microbial biomass carbon within the plough layer
复制标题
耕层土壤微生物生物量碳的季节变化
DOI：
10.1016/0038-0717(93)90166-9
复制
发表时间：
1993
期刊：
影响因子：
--
通讯作者：
O. Heinemeyer
中科院分区：
文献类型：
--
作者：
E. Kaiser;O. Heinemeyer
采用基质诱导呼吸技术，在甜菜-冬小麦-冬麦轮作的常规土壤管理条件下，对31个月的土壤微生物量碳进行了估算。通过对不同耕层深度(0-10、10-20和20-30 cm)土壤微生物量碳的分析，发现土壤和作物管理对土壤微生物量碳的季节变化有一定的影响。虽然耕作后微生物量碳的分布比较均匀，但在生长初期，耕作层内的微生物量碳随深度的增加而逐渐减少，呈梯度分布。这是由于表层(0-10 cm)微生物生物量-C迅速增加所致。整个秋冬季，土壤微生物量碳分布随深度变化不大。轮作期间，土壤微生物量碳含量依次为甜菜>冬小麦>冬麦。
Over 31 months microbial biomass-C was estimated using the substrate induced respiration technique in fields with conventional soil management, where sugar beet-winter wheat-winter barley were grown in a crop rotation. Analysing the plough layer at different depths (0–10, 10–20 and 20–30 cm) seasonal variations were observed in the amount of microbial biomass-C due to soil and crop management. Although after ploughing microbial biomass-C distribution was homogeneous, a gradient, with decreasing amounts of biomass-C with depth, developed within the plough layer during the early growing season. This was due to a rapid increase of microbial biomass-C in the surface layer (0–10 cm). Throughout autumn and winter there was no change in microbial biomass-C distribution with depth. Within the crop rotation microbial biomass-C content increased in the order sugar beet, winter wheat and winter barley.