خيارات البحث
النتائج 1 - 3 من 3
Nitrogen saturation induced during winter by experimental NH4NO3 addition to a forested catchment
1994
Hultberg, H. | Dise, N.B. | Wright, R.F. | Andersson, I. | Nystrom, U. (Swedish Environmental Research Institute (IVL), Department of Ecology and Environmental Research, Box 47086, 40258 Gothenberg (Sweden))
Evaluation of fate and exposure models - Simulation of pesticide runoff at Rosemaund Farm (UK) using the SoilFug model
1994
Di Guardo, A. (Toronto Univ., Ontario (Canada). Inst. for Environmental Studies) | Williams, R.J. | Matthiessen, P. | Brooke, D.N. | Calamari, D.
A validation exercise of the SoilFug model using field runoff data from Rosemaund Farm (UK) is described. A comparison has been made of modelled and measured concentrations of several pesticides in surface water and soil during and after specific rain events following application. The field experiments were designed to obtain data on rainfall, outflows of water, pesticide application rates and concentrations in soil and water. The results were satisfactory for the undissociated pesticides (atrazine, carbofuran, dimethoate, isoproturon, lindane, simazine and trifluralin), whose concentrations in water were mostly predicted within an order of magnitude of measured data. The results for the dissociated pesticides (dichlorprop, MCPA, mecoprop) were less satisfactory, giving generally much higher predicted concentrations in water. The use of the SoilFug model is suggested for the calculation of predicted environmental concentrations (PECs) in water, since it generally produces acceptable results from a relatively small set of input data, most of which is generally available.
اظهر المزيد [+] اقل [-]A new method of rainfall-runoff modelling and its applications in catchment hydrology
1994
Littlewood, I.G. | Jakeman, A.J. (Institute of Hydrology, Wallingford, OX10 3BB (United Kingdom))
