Analysis method of response of surface water quality to drought and flood events

• Main Authors: LIU JIAHONG, YAN DENGHUA, WENG BAISHA, LYU RUIZHE, WANG HAO
• Format: Patent
• Language: Chinese; English
• Published: 07.12.2016
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTEDFOR SPECIFIC APPLICATION FIELDS; PHYSICS

The invention discloses an analysis method of response of surface water quality to drought and flood events. The analysis method is characterized by comprising the following steps: step one, analyzing historical evolution and developing trend of drought and flood events; step two, building and calibrating an SWAT model; step three, calculating total nitrogen and total phosphorus; and step four, analyzing response of the surface water quality to the drought and flood events. Compared with the prior art, the analysis method is capable of screening typical representative months of drought events, flood events and drought and flood sudden turning events by combining indexes such as a standardized precipitation index, 24-hour precipitation amount and continuous non-rainy days and the like based on climate model forecasting results, the SWAT model and a statistic analysis method, comparing and analyzing the influence of drought and flood events to the water quality of the typical months and effectively analyzing a