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以宁夏20个地理行政区划的鱼类分布资料为依据,采用欧式距离系数和类平均值法对区域关系进行了聚类分析,并对宁夏鱼类地理区划进行了研究.结果表明,宁夏的鱼类地理区划应分为2个动物地理省,即宁南黄土高原省和宁中北河套荒漠山地省;宁中北河套荒漠山地省又分为3个动物地理州,即宁北半荒漠丘陵地理州、宁夏平原地理州和西部荒漠半荒漠山地地理州.
Based on the data of fish distribution in 20 geographical and administrative divisions in Ningxia, the relationship between the two regions was analyzed by cluster analysis based on the Euclidean distance coefficient and the class average method, and the geographical division of fish in Ningxia was studied. The results showed that the fish of Ningxia Geographic divisions should be divided into two animal geography provinces, that is, Ningnan Loess Plateau and Hunchuoli Hetao desert mountain province; Ningzhongbei Hetao desert mountain province is divided into three animal geography states, that is, Ningbei semi-desert hills and geography State, Ningxia Plain geography and western desert semi-desert mountain geography.