A Preliminary Study on Environmental Response of the Water Body in Chaohu Lake to Reginal Climate Change

For the over 10 more years various climatic factors and environmental factors were investigated and collected. the correlation analysis was made, which is to study the impact of climate change on Chaohu water body environment and to attempt to reveal the response mechanism of the water body to climate change. The results showed that inter-annual changes of rainfall, temperature, concentration of carbon dioxide (CO) in the lake did not significantly correlate with total nitrogen (TN), total phosphorus (TP), permanganate index (CODMn)which attributed to extreme weather events, or increased by human activities. In the early surveyed periods (1987-1991) total nitrogen and rainfall performed a drastic correlation, and late stage (1996-2000), climate and water environmental parameters showed no significant correlation. Clearly, climate change displayed a dominant impact on water environment while human disturbances to the environment were weak. However, with the interference enhancing from human beings, in Chaohu lake region climate changed on water environment and the pressure of human activities had a synergistic effect. Therefore, climate and man-made factors might lead to global deterioration in water quality, including water eutrophication.