摘要
应用耗散结构理论探讨福建稻田土壤生态系统平衡的实质及热力学依据,提出从环境系统引入足够的负熵是生态系统稳定有序的必要条件.通过计算福建省不同土壤类型的系统原始熵(S_0),熵变(S_1)及最佳熵变值(S′_1),分析各类稻田土壤茅统的结构特征及其转化效率,为正确评价稻田生态系统提供依据.
Progogine's dissipative structure theory was applicated to study the essence of paddy soil ecosystem equilibrum and its basis of thermodynamics. It was pointed out that the intake of ssufficient nagative entropy from the environment is a necessary condition leading to the stability of ecosystem. In order to appreciate paddy soil ecosystem correctly, the structure properties of various paddy soil systems and their thermodynamic mechanisms of mater and energy conversion efficiencies were analysed in detail by original entropies (S_0), entropy change values (S_1,) and the best entropyevalues (S_1 ) of various paddy soils in Fujian province.
关键词
稻田
土壤
生态系统
耗散结构
dissipative structure
paddy soil system entropy
the best entropy change value
