The clustering analysis of least distance method was applied, the results showed that types of the phytocoenosium are 4: high function, commonly function, low function and degenerative function type.

采用最小距离方法逐步聚类分析，对理水调洪型植被群落分为高功能理水调洪型、一般功能理水调洪型、低功能理水调洪型、功能退化型4个等级。

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