Meteorological Assessment of Ecological Qualities and Bio-Meteorological Indicators in Ya'an

This paper calculated the hot index (HI), cool index (CI), body comfort meteorology index (BCMI) and other the impact of climate on human bio-meteorological indicators in Ya'an.Comparing the ecotourism climate resources of Ya'an and the other well-known tourist cities, according to the meteorological assessment of ecological quality of Ya'an in 2007, the main results are as follows:1) The climate in Ya'an is very comfortable to most people.2) the "comfort period for traveling" and "the most comfortable period for traveling" in Ya'an were reach to 210~270d and 120~180d, the most comfortable period is mainly in summer.3) Comparing with the other major tourist cities in China, Ya'an City is the best ecotourism climate city.4) The ecological quality of Ya'an is the best in Sichuan, and one of the best in the China.