Abstract: Taking the 15 meteorological stations during 1981 to 2010 meteorological data in the Yangtze River area as the basic data, climate comfort degree of ten big lakes that are representative the middle and lower reaches of Yangtze River in China was evaluated using a comprehensive climate comfort evaluation model, and the distribution characteristics of climate comfort in different time and space were also studied. The results show that, the comfort degree of the ten lakes in the middle and lower reaches of Yangtze River is generally higher, and the comfort period is generally distributed in April to May and September to October, and the discomfort period is distributed in July to August. The climate comfort degree of spring and autumn is obviously higher than that of winter and summer. The variation trend of climate comfort index present "M" in the whole year. The climate comfort degree of the ten lakes in the middle and lower reaches of the Yangtze River decrease with longitude, and increase with the decrease of latitude, and increased with the elevation. The climate comfort of the lakes in the lower reaches of the Yangtze River is slightly higher than that in the middle reaches.

Key words: the middle and lower reaches of Yangtze river, lakes, climate comfort degree, spatio-temporal distribution