What are the hazards of reclaiming land from lakes? 1, prone to floods.
After reclamation, it is easy to cause floods, because this measure accelerates the process of lake swamp, promotes the continuous reduction of lake area, and leads to problems in the regulation and storage of surface runoff, thus increasing the area of natural disasters such as floods and droughts year by year.
2. Decrease in resources
There are many kinds of aquatic plants and animals in the lake. Once the lake is reclaimed, the living area of aquatic plants will decrease. In addition, when maintaining crops, a large number of fertilizers such as chemical fertilizers will be applied, which will easily lead to the imbalance of nitrogen and phosphorus in the lake area, which will lead to the deterioration of the ecological environment and the sharp decline of fish, plants and other species.
3. Water pollution
When a lake is enclosed and turned into a field to grow crops, harmful substances such as chemical fertilizers and pesticides will be sprayed, which will gradually blend into the water body with the water, causing water pollution, and green algae and cyanobacteria will multiply in large numbers. This kind of peripheral lake reclamation is easy to cause soil erosion.
4, affect the climate
Lakes have the functions of regulating disasters and influencing climate. When the lake area is too small, it will not only affect its water storage capacity, but also lead to the decrease of water evaporation year by year, leading to frequent natural disasters such as droughts and floods, thus reducing the yield and quality of crops.