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[Stable mechanisms of soil aggregate and effects of human activities]
Yi Shi1, Xin Chen, Shanmin Shen
1Key Laboratory of Terrestial Ecological Process, Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016. shiyi@iae.ac.cn
Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology
|March 11, 2003
Abstract:
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 inputed 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.