[L-THIA-based management design for controlling urban non-point source pollution].
L-THIA Model was used to simulate the amounts of NPS pollutants in 2 catchments of Sanjiao watershed (Sj1, Sj2) in Hanyang district, and the total simulated amount of NPS loads in Sj1 and Sj2 were 1.82 x 10(4) kg, 1.38 x 10(5) kg, respectively. Based on the theory of resource-sink" and interaction of pattern with process, a series of BMPs, including green roof, grassland, porous pavement, infiltration trench, vegetative filter strip and wet pond, were optimized, and effects of BMPs were simulated along the surface runoff pathway. The results show that total pollutants outputs entering Sj1 and Sj2 account for 14.65% and 6.57%, respectively. Combining L-THIA model and BMPs in series is a proper measure for non-point source pollution control and urban development planning at watershed or region scale.
Guo
Qing-Hai
QH
State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. gqhsanmei@yahoo.com.cn
Yang
Liu
L
Ke-Ming
Ma
M
D001673:Biodegradation, Environmental; D002947:Cities; D003198:Computer Simulation; D008962:Models, Theoretical; D009584:Nitrogen / Q000032:analysis / Q000378:metabolism; D010758:Phosphorus / Q000032:analysis / Q000378:metabolism; D010944:Plants / Q000378:metabolism*; D011891:Rain; D014872:Water Movements; D014874:Water Pollutants, Chemical / Q000032:analysis* / Q000378:metabolism; D014877:Water Pollution, Chemical / Q000517:prevention & control*; D018508:Water Purification / Q000379:methods*
D014874:Water Pollutants, Chemical; D010758:Phosphorus; D009584:Nitrogen