摘要
土壤团聚体是土壤结构的基本单位 ,它的形成不仅是自然的过程 ,而且受到人类活动的严重影响 ,即土地利用变化、耕作干扰、有机肥施用以及种植制度和轮作方式等人类活动的影响 .土壤结构的改善不仅决定于输入有机碳的总量 ,而且与有机质的组成和特征有关 .因有机质的组成和特征不同 ,使微团聚体和大团聚体的稳定作用具有不同的机制 .
Soil aggregate is the basic unit of soil structure. Its formation is a natural process but influenced severely by human activities,including land utilization ,tillage disturbance, manure application, and cropping system. The improvement of soil structure is decided not only by total amount of organic C inputted into soil, but also by the composition and characteristic of organic matter. Owing to the different composition and characteristic of organic matter, there are different mechanisms for the stability of micro and macro aggregates.
出处
《应用生态学报》
CAS
CSCD
2002年第11期1491-1494,共4页
Chinese Journal of Applied Ecology
基金
国家重点基础研究发展规划资助项目 (G19990 1180 4) .
