疟疾对西南边疆民族构成和分布的影响

The Influence of Malaria to National Constitution and Distribution in the Southwestern Frontier

我国西南低纬地区流行疟疾,其危害和影响在文献中多有记载。自秦以来,虽然历代王朝对该区持续不断进行移民开发,但此地仍是"夷多汉少"。究其因,乃疟疾在一定程度上阻挡了汉族移民,并且还影响了当地不同民族的分布格局。由于疟疾的发病与海拔高低成反比关系,一些长期生活于低海拔湿热地区的民族对该疾病也因此具备了一定的抵抗力。

Malaria is epidemic in the low latitude district of the southwest of China.Lots of its harm and influences have been written in historical documents.Since Qin Dynasty,historical goverments have continual migrated people and developed in the districts,but the districts also have more ethnic minorities and fewer Han people.The cause is that malaria prevents Han emigrations and influence the distributing patters of local different nationalities in some degrees.There are inverse proportion between disease popularity of malaria and high or low latitudes.Some nationalities,who live in wet and hot districts of low latitudes,have some counteracting forces to malaria.