AGNPS Development
Agricultural Non-Point Source Pollution Control
1. The problem appeared in 1970s. The 1970 Clean Water Act (cwa) AND ITS SUBSEQUENT Amendments clearly considered NPS pollution as one of the most serious water quality problems.
2. In The Netherlands, Dr. Fedders, a professor in Wageningen Agricultural University, researched water models SWATRO and SALTBL from 1972. So far, they developed integrated model SWACROP.
3. After 1980s many countries pay attention to research Water models. And they gradually developed many advanced models, such as TANK model (Japan), STANFORD model, Sacramento Model (America), CROPWAT (Italy, FAO).
4. In China, the model research started from 1970s. The most famous models are Full Store Runoff model, Over Ratio Runoff model (River & Sea Univ.) and SPAC model (QingHua Univ.). In 1990, World Bank financed us to build a Non-Point Source Pollution laboratory in River and Sea University. This laboratory is largest one in Asia. Now, they are researching Yangzsi River pollution.