Environmental impact of hydroelectric productionEnvironmental impact of hydroelectric productionEnvironmental impact of hydroelectric production
1. Geography: Huge reservoirs can cause surface activity and even cause earthquakes. Additionally, it will also lead to changes in the hydrology of the basin, such as lower water levels downstream or reduced sediment upstream. After the construction of the reservoir, due to high evaporation, the climate was cooler and more stable, and precipitation decreased.
2. Biological aspects: For terrestrial animals, after the construction of the reservoir, a large number of wild animals and plants may drown and die, or even disappear completely. For aquatic animals, after the construction of the reservoir, fish will be affected due to changes in the upstream ecological environment, leading to theextinction or population reduction.
At the same time, due to the expansion of the upstream water area, the habitats of some organisms (such as snails) have increased, creating conditions suitable for the spread of certain diseases regional (such as schistosomiasis).
3. Physical and chemical properties: Water flowing into and out of the tank changes physical and chemical properties such as color and odor, as well as the density, temperature and even solubility of the water in each layer of the tank is different. The water temperature of the deep water is low, and the organic matter at the bottom of the sediment tank cannot be completely oxidized and undergoes anaerobic decomposition, and the carbon dioxide content of the water body increases significantly.