Abstract: Chlorophyll-a concentration is an important parameter in assessing water environment. Based on the 20 times investigation data at 32 stations in Taihu Lake in 2005-2009 and the Lake wind fields simulated by meteorological data, this paper explored the effects of the wind fields on the spatial distribution of chlorophyll-a in the Lake. The results showed that the high-value center of chlorophyll-a was in the northwestern Taihu Lake, Zhunshan Bay, and Meiliang Bay, while the lower value was distributed in southeastern Taihu Lake. In whole year, the wind direction was mainly southeast, and the wind was stronger in the south but weaker in the north of the Lake. Wind field had obvious effects on the translocation of chlorophyll-a. Under the action of the wind fields, the chlorophyll-a concentration transported gradually to the northwest and north of Taihu Lake, and accordingly, the chlorophyll-a concentration in these areas was generally higher.  

Key words: paddy soil, short-term drying process, N₂O emission, denitrifying microbe abundance.