modeling of non-point source pollution by long- term hydrologic impact assessment (l-thia) (case study: zayandehrood watershed) in 2015
modeling of non-point source pollution by long-
term hydrologic impact assessment (l-thia)
(case study: zayandehrood watershed) in 2015
background aims of the study: in this research, long-term hydrologic impact
assessment model is selected for simulation of runoff and nps pollution. the aim of this study
is modeling of non-point source pollution by l-thia model in zayandehrood watershed in
materials methods: in this study, analytical survey and investigation of references in the
context of library studies has been used. zayandehrood watershed is located in esfahan, iran.
required data in this study are land use, soil and precipitation data from studied period. the first
l-thia model run and then the spatial distribution of non-point source pollution analysed
within the study area. the annual average runoff volume, depth and the non-point source
nitrogen and phosphorus load and the spatial distribution were estimated.
results: according to the study, we concluded that amount of nitrogen and phosphorus load in
agricultural and residential areas are more serious and the nitrogen load due to nonpoint source
pollution was larger than phosphorus load in zayandehrood basin. the maximum runoff depth in
the region was calculated 501.371 cm and the maximum nonpoint source pollution obtained
24244.27 kg. the results indicated the watershed likely is affected to impacts from urbanization
conclusions: the results of this study can be used for urban planning and decision making in an
effort to protect water and habitat quality of zayandehrood river. integration of introduced model
and other hydrologic models can be increased accuracy and precision of results. also, subwatersheds
can prioritize for watershed management in in the vulnerable sections.
توضیحات دمو: دمو
حجم دمو:10 کیلوبایت