We study a class of Kolmogorov systems of dimension two depending on two independent parameters. The local behavior of the system is described in terms of bifurcation diagrams which contain the bifurcation curves separating a node from a focus.

中文翻译：

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一类Kolmogorov系统的分叉图

我们根据两个独立的参数研究了一类二维的Kolmogorov系统。用分叉图来描述系统的局部行为，该分叉图包含将节点与焦点分开的分叉曲线。