Quantitative Research Methods of Linguistic Niche and Cultural Sustainability

Building Sustainable Cities and Human Communities is one of the 17 Development Goals United Nations. And sustainability culture plays an important role in sustainable development cities human communities. Language carrier culture, language key factor culture. How to measure its niche achieving This paper systematically summarized concept theory ecolinguistics as a theoretical basis for quantitative study linguistic niche, at same time, methods measurement were provide mathematical support niche. The Shannon-Wiener index Pianka used quantitatively particular first based on use Hmong Mandarin Jianhe County, Guizhou Province, China. results showed that temporal dimension, overlap indexes all above 0.9 sample villages, but spatial both languages between 0.5 0.6. separation moderated high overlap, which made two languages’ spatio-temporal medium-high level. proved helpful quantifying level thus providing timely, accurate, dynamic reference data inform macro-control policies