河北省退化山场土壤系统熵研究

Soil systems entropy of devolution mountains in Hebei province

根据耗散结构理论,提出用土壤系统熵来表征退化山场土壤的退化程度,并对退化山场土壤及化肥培肥后的土壤系统熵值进行了计算,提出向退化山场土壤生态系统中引入负熵流是改良土壤,使退化山场土壤生态系统稳定有序的必要条件。

In this paper the dissipative structure theory was used to study soil systems entropy and type the stage of devolution mountains. The soil systems entropy values of devolution mountain soils and fertilized soils were calculated. It was pointed out that the intake of sufficient negative entropy is a necessary condition leading to the stability and ordered soil ecosystem of devolution mountains. 