It included two parts. In first part a predator-prey model was proposed. Two stable states were obtained according to eclolgical data of panda and bawboo in area of Wolong Reserve.

包括两大部分：第一部分中，假设为捕食被捕食模型，根据在卧龙保护区收集的数据得到两个稳定态；

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A system of retarted functional differential equations as a predator-prey model with stage structure and dispersion is discussed. Conditions for global stability of the system are given.

讨论了一类带有扩散和具有阶段结构与时滞的两种群捕食系统，分析了该系统的非负不变性、边界平衡点性质及全局渐近稳定性。

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In the second part, a predator-prey model of ordinary differential with one-way diffusion is studied considering the monsoon, river flows, other natural conditions and living habits as background.

第二章以季风、河流流向等自然条件和生物生活习性为背景，建立食饵单向扩散的捕食-被捕食系统的常微分模型。

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