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东北地区第四纪大型食草动物共有7科、22属、33种,其中绝灭的有14种。它们的生态习性大多为森林型和草原型,部分为疏林型,少数为沼泽型、苔原型或混合型。这些动物少数种类的体型较小或很大,而大多数种类的体型都较大。在更新世期间,这些动物似经历了一个体型、种群密度和地理分布面逐渐增大,最后体型较大的类型又被体型较小的类型所替代的演化历程。同时,东北地区还经历了三次喜冷动物南迁与两次喜温动物北上交替扩散的事件,其中第二次交替扩散事件留下的记录较多。这些现象的原因在于北半球冬半年平均获得的太阳辐射量的变化,以及由其造成的冷暖气候的交替变化。
There are 7 families, 22 genera and 33 species of large herbivores of Quaternary in Northeast China, of which 14 species are extinct. Most of their ecological habits are forest type and grass type, some are sparse forest type, and a few are swamp type, tundra type or mixed type. A few species of these animals are smaller or larger, while most species are larger. During the Pleistocene, these animals experienced a gradual increase in body size, population density and geographical distribution, and finally the larger body type was replaced by the smaller body type. At the same time, the northeast region also experienced three times the relocation of the hi-cold animals and the two northward spreads of the animals. The second alternation spread left more records. The reason for these phenomena is the change of the average amount of solar radiation obtained in the first half of the winter in the Northern Hemisphere and the alternation of the warm and cold climate caused by it.