环分析方法的探讨及在农牧生态系统稳定性判定中的应用

INQUIRE INTO METHOD OF LOOP ANALYSIS AND USAGE OF JUDGMENT OF STABILITY OF THE MIXED AGRI－ECOSYSTEM

本文对环分析理论中的一些定义和结论进行修改和证明，提取了农牧结合生态系统一种结构的环模型，证明了此系统是稳定的，为系统持续发展的研究奠定了基础．

Several definitions and conclusions of the theory of loop analysis stability are modifiedand proved. The loop model of a kind of structure of the mixed agri-ecosystem isestablished. The stability of the system is proved with the theorems of loop analysisstability. The base is done for the system sustainable developing.