Download or read book A Phosphorus Transport Model for Small Agricultural Watersheds written by A. Rousseau and published by . This book was released on 1985 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling Dissolved Phosphorus Transport from Agricultural Watersheds in Central New York written by Josephine Anne Archibald and published by . This book was released on 2015 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: An important cause of freshwater contamination in the United States, soluble reactive phosphorus (SRP) loss from agriculture often occurs when overland runoff transports phosphorus (P) from manures and fertilizers to receiving waters. Because of the importance of overland runoff in transporting P, models that allow us to pinpoint the location and timing of overland runoff are an important tool for reducing SRP transport in overland runoff. We created a simple regional model that allows us to predict the timing and location of runoff in the northeastern United States. In addition, we conducted soil box experiments which indicate that SRP concentrations decline rapidly over time after manure fertilization, and this decline in P availability is affected by temperature. We developed an SRP model which predicts the SRP concentration after manure application, which, combined with the spatially explicit watershed model, allows for prediction of SRP loss from agriculture under a variety of manure timing scenarios. We find that in a 326 km2 watershed where farmers apply P to match crop needs, simply changing the timing of manure application to avoid periods of runoff have the potential to reduce manure-derived SRP in runoff by up to 40%. iii.

Download or read book The Hydrology of Phosphorus Transport in Watersheds of Mixed Agricultural and Forest Land Use written by Christopher Anand Scott and published by . This book was released on 1998 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling of Phosphorus Transport in Surface Runoff from Agricultural Watersheds written by Seyfollah Amin-Sichani and published by . This book was released on 1982 with total page 314 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling Chemical Transport in Soils written by Hossein Ghadiri and published by CRC Press. This book was released on 1992-09-23 with total page 240 pages. Available in PDF, EPUB and Kindle. Book excerpt: Modeling Chemical Transport in Soils: Natural and Applied Contaminants provides a comprehensive discussion of mathematical models used to anticipate and predict the consequences and fate of natural and applied chemicals. The book evaluates the strengths, weaknesses, and possibilities for application of numerous models used throughout the world. It examines the theoretical support and need for experimental calibration for each model. The book also reviews world literature to discuss such topics as the movement of sorbed chemicals by soil erosion, the movement of reactive and nonreactive chemicals in the subsurface and groundwater, and salt transport in the landscape. Modeling Chemical Transport in Soils: Natural and Applied Contaminants is an important volume for environmental scientists, agricultural engineers, regulatory personnel, farm managers, consultants, and the chemical industry.

Download or read book Modelling Soil Erosion by Water written by John Boardman and published by Springer Science & Business Media. This book was released on 2013-06-29 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt: TO THE MODEL EVALUATION 1. MODELLING SOIL EROSION BY WATER l 2 John Boardman and David Favis-Mortlock 1 School of Geography and Environmental Change Unit Mansfield Road University of Oxford Oxford OX1 3TB UK 2 Environmental Change Unit University of Oxford 5 South Parks Road Oxford OX1 3UB UK Introduction This volume is the Proceedings of the NATO Advanced Research Workshop 'Global Change: Modelling Soil Erosion by Water', which was held on II-14th September 1995, at the University of Oxford, UK. The meeting was also one of a series organised by the IGBP 1 GCTE Soil Erosion Network, which is a component of GCTE's Land Degradation Task (3.3.2) (Ingram et aI., 1996; Valentin, this volume). One aim of the GCTE Soil Erosion Network is to evaluate the suitability of existing soil erosion models for predicting the possible impacts of global change upon soil erosion. Due to the wide range of erosion models currently, in use or under development, it was decided to evaluate models in the following sequence Favis-Mortlock et al., 1996): • field-scale water erosion models • catchmenr-scale water erosion models • wind erosion models • models with a landscape-scale and larger focus. As part of this strategy, the first stage of the GCTE validation of field-scale erosion models was carried out at the Oxford NATO-ARW. I A list of Acronyms fonns Appendix A.

Download or read book Modeling Phosphorus Transport in Surface Runoff from Agricultural Watersheds for Nonpoint Source Pollution Assessment written by Daniel Eugene Storm and published by . This book was released on 1986 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 806 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliographies and Literature of Agriculture written by and published by . This book was released on 1988 with total page 950 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Mathematical Models of Small Watershed Hydrology and Applications written by Vijay P. Singh and published by Water Resources Publication. This book was released on 2002 with total page 984 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprehensive account of some of the most popular models of small watershed hydrology and application ~~ of interest to all hydrologic modelers and model users and a welcome and timely edition to any modeling library

Download or read book The Protection of Ground and Surface Waters January 1982 August 1987 written by and published by . This book was released on 1988 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Hydrologic Modeling of Small Watersheds written by Charles Thomas Haan and published by . This book was released on 1982 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book National Water Conference written by Tom Al Austin and published by . This book was released on 1989 with total page 614 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stochastic Phosphorus Model for Agricultural Watersheds written by Benjamin J. Higgins and published by . This book was released on 1990 with total page 220 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Phosphorus Uptake and Retention in Headwater Streams of the Fox River Basin written by Dustin B. McHenry and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Anthropomorphic input of phosphorus into lakes and rivers can lead to harmful effects including eutrophication, algal blooms, and changes in community structure. Small order streams in agricultural and urban watersheds could potentially limit phosphorus loading to lakes through biotic and abiotic nutrient uptake and retention. In this study, we conducted sustained releases of potassium phosphate and Rhodamine WT to examine phosphorus retention and cycling in small order streams in the Fox River Basin in eastern Wisconsin. Stream characteristics measured included stream discharge, average width and depth, and background phosphorus concentration. Transient storage and phosphorus uptake metrics were determined using a solute transport model based on solute releases. Phosphorus background concentration was positively related to areal uptake (U) and negatively related to uptake velocity (Vf). Akaike Information Criterion was used to select linear models that best predicted transient storage and phosphorus uptake with the least amount of information loss. A model with stream velocity as the dependent variable was selected for predicting transient storage (Fmed200) and a model with the percentage of forested landuse as the dependent variable was selected for predicting Vf. We did not observe a strong relationship between transient storage and nutrient uptake. Additionally, our results suggest that streams in agricultural watersheds have limited capacity to reduce the loading of phosphorus to downstream lentic systems.

Download or read book Modeling Pesticides and Nutrients on Agricultural Lands written by Anthony S. Donigian (Jr.) and published by . This book was released on 1976 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agricultural Engineering Index written by and published by . This book was released on 1987 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt: