临桂县六塘土话的阳平分韵现象

Final Variations with Yangping Tone in Liutang Dialectof Lingui County

桂北平话是一种归属有争议的汉语方言,历来为学界所关注。广西临桂县东南部的六塘土话属于桂北平话,语音层次多样,韵母演变复杂,其中有一种以阳平调为条件的异调分韵现象,涉及了除止、深摄外的中古各韵摄,表现出阳平调韵母的主元音舌位均高于非阳平韵的特点。利用实验语音学的方法考察声调的调型、调值以及韵母时长与阳平分韵的关系,推断音变时的时长差异导致异调分韵。

Ping dialect in north Guangxi has attracted close attention from scholars for the matter of its belonging for a long time.Liutang dialect in the southeastern Lingui County of Guangxi belongs to Ping dialect,featured by its pronunciation diversity and the evolvement complexity of finals.There is a kind of final variation on condition of yangping tone,involving ancient rhymes in addition to Chuzhi and Shenshe,and showing that the main vowel tongue position of the yangping tone-evoked finals are higher than that of the non-yangping tone rhyme.According to the exploration of the relationship among tone modulation,value and time length of the finals with final variations evoked by yangping tone by means of experimental phonetics,a conclusion can be drawn that it is the difference of time length on the process of sound variation that leads to phenomenon of tone-evoked variation of finals.