中古合口细音在滇东南方言中的演变层次

Evolution Hierarchies of Mid-ancient Front-open Vowels in Yunnan Southeastern Dialects

合口细音在滇东南方言今读中主要体现为撮口呼和齐齿呼两种类型,部分韵部残留着中古时期的复合音韵头,这属最早时期的读音类型。此外,见系字在滇东南西北部的部分方言点呈现出读开口呼的趋势,这是最晚的演变层次类型。其中,齐齿呼是合口细音在滇东南今读中的主流类型,代表着其未来发展演变的主体方向,它的演变原理既与发音的省力和音系的经济原则相关,还与当地苗语、壮语等少数民族的语音影响有联系。

The front-open vowels has two types of Cuokouhu and Qichihu in the present reading of Yunnan southeastern dialects and parts of rhyme still keep mid-ancient compound rhyme onset which is the earliest reading type. Moreover, Jian initials in some Yunnan southeastern dialects show the trend of Kaikouhu which is the latest evolution hierarchical type. Among them, Qichihu is the major present reading type of front-open vowels in Yunnan southeastern dialects and represents the evolving trend. Its evolution is related to labour-saving principles in articulation and economical principle in phonology and also to ethnic language＇s influence such as Miao language and Zhuang language.