摘要
耗散结构理论从广义热力学的概念出发,论证了开放系统与外界环境条件进行物质和能量交换产生负熵流的数学形式,解释了非平衡系统通过自组织过程产生新的有序结构的条件。本文介绍并应用这一理论讨论了土壤生态系统的某些问题,并把该理论应用于土壤肥力的研究,指出土壤系统熵的概念可以判别肥力高低和演变方向,同时进行了土壤系统起始熵的计算。
In this paper the dissipative structure theory has been lintroduced and applied to discuss some characteristics of soil ecosystem, A self-organized phenomenon can simultaneously occur in an open system under far-from-equilibrium conditions by exchanging energy and material with outside and then the system becomes more orderly than the former state. The concept of soil systems entropy has been pro-posed and applied in studying soil fertility.Results showed that the higher the soil fertility, the lower the soil system entropy.
出处
《农村生态环境》
CSCD
1989年第3期52-55,共4页
Rural Eco-Environment