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A GIS-based groundwater travel time model to evaluate stream nitrate concentration reductions from land use change

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A GIS-based groundwater travel time model to evaluate stream nitrate concentration reductions from land use change; 2007; Article; Journal; Environmental Geology; Schilling, K. E.; Wolter, C. F.

Summary

Excessive nitrate-nitrogen (nitrate) loss from agricultural watersheds is an environmental concern. A common conservation practice to improve stream water quality is to retire vulnerable row croplands to grass. In this paper, a groundwater travel time model based on a geographic information system (GIS) analysis of readily available soil and topographic variables was used to evaluate the time needed to observe stream nitrate concentration reductions from conversion of row crop land to native prairie in Walnut Creek watershed, Iowa. Average linear groundwater velocity in 5-m cells was estimated by overlaying GIS layers of soil permeability, land slope (surrogates for hydraulic conductivity and gradient, respectively) and porosity. Cells [...]

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Harvested on Thu Jun 12 16:30:09 MDT 2014 from MODS XML Service

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Type Scheme Key
local-index unknown 70031587
local-pk unknown 70031587
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1007/s00254-007-0659-0
series unknown Environmental Geology

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journalEnvironmental Geology
parts
typevolume
value53
typeissue
value2
languageEnglish
citationTypeArticle

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