Abstract:

The issue of climate change has impacts on wetlands ecosystem.On the ground of the globe climatic change,the climate of Honghu Lake zone has changed visibly.Through the analysis of weather data from 1961 to 2004 in four stations around Honghu Lake,the impacts of climate change on Honghu Lake wetlands were analyzed according to the point of aerography and ecology.The result showed that temperature has visible ascending trend with the rate of 0.264℃/10 a and precipitation has the tiny ascending trend with the rate of 49.964 mm/10 a.The precipitation has ascending trend in summer and in winter,but it has downtrend in spring and in autumn.The coefficient of humidity has downtrend in Honghu Lake zone since 1961.Climate change made Honghu Lake face threat that the water level will drop and the area will descend.It also made biodiversity descended and species invaded in Honghu Lake.The change of precipitation pattern changed the hydrology of wetlands,and accelerated the instability of the ecosystem