The region today corresponding to modern Hunan province has been a site of stable language contact for over 2500 years, with the intensification of that contact occurring in particular between the 17th and 21st centuries. Major political developments during this time led to massive population movements which reshaped the demographics and linguistic ecology of Hunan. The region has considerable language and phylogenetic diversity, being home to three top-level groupings (Sino-Tibetan, Kra-Dai, and Hmong-Mien) and representing at least 17 different language varieties within a condensed area of around 211,800 km2; it is therefore the ideal setting to explore long-term language contact as mediated by degrees of relatedness. Structural diversity, in terms of morphological and phonological typology, is relatively low, owing to convergence over several thousand years. All language varieties in the province converge towards the MSEA typological profile; however, those that entered the region latest, such as varieties of Tujia, still retain features from outside the region (SOV, multisyllabic roots, etc.). In this paper the case is made that Hunan, with its geography, history of settlement, and contact between related and unrelated language families, represents a microcosm of linguistic contact situations which have taken place in other periods and regions of China. This is attributed to a combination of geographic and demographic patterns, historical patterns of settlement and ethnic conflict, and a complex sociolinguistic situation. Taken together, these lead to the formation of a unique linguistic niche where stable near-relative contact, distant-relative contact, and non-relative contact take place. The case is made that instances of near-relative contact between Xiang varieties and Mandarin (Standard and Southwestern) represent instances of koineization. This is evidenced by the formation of regional koines, such as Plastic Mandarin in Changsha, which present a degree of local prestige and show evidence of regional standard formation. Meanwhile distant- and non-relative contact between Southwestern/Standard Mandarin and Tujia and Waxiang, and Xiangxi Miao and Kam-Dong, respectively, are seen to result in extensive grammatical hybridization.
Robert Marcelo Sevilla (Wed,) studied this question.