Runoff phosphorus retention in vegetated field margins on flat landscapes
نویسندگان
چکیده
منابع مشابه
Phosphorus retention and remobilization in vegetated buffer strips: a review.
Diffuse pollution remains a major threat to surface waters due to eutrophication caused by phosphorus (P) transfer from agricultural land. Vegetated buffer strips (VBSs) are increasingly used to mitigate diffuse P losses from agricultural land, having been shown to reduce particulate P transfer. However, retention of dissolved P (DP) has been lower, and in some cases VBSs have increased deliver...
متن کاملPredicting dissolved phosphorus in runoff from manured field plots.
Dissolved inorganic P transport in runoff from agricultural soils is an environmental concern. Models are used to predict P transport but rarely simulate P in runoff from surface-applied manures. Using field-plot data, we tested a previously proposed model to predict manure P in runoff. We updated the model to include more data relating water to manure ratio to manure P released during water ex...
متن کاملEffect of mineral and manure phosphorus sources on runoff phosphorus.
Concern over nonpoint-source phosphorus (P) losses from agricultural lands to surface waters has resulted in scrutiny of factors affecting P loss potential. A rainfall simulation study was conducted to quantify the effects of alternative P sources (dairy manure, poultry manure, swine slurry, and diammonium phosphate), application methods, and initial soil P concentrations on runoff P losses fro...
متن کاملEffects of hydrology and field management on phosphorus transport in surface runoff.
Phosphorus (P) losses from agricultural landscapes arise from the interaction of hydrologic, edaphic, and management factors, complicated by their spatial and temporal variability. We monitored sites along two agricultural hillslopes to assess the effects of field management and hydrology on P transfers in surface runoff at different landscape positions. Surface runoff varied by landscape posit...
متن کاملPhosphorus Retention in Sediments
Phosphate is usually the most important growth limiting nutrient in aquatic environments-The availability of P is the result of external load and retention in the sediments. This latter is the result of a number of transport, microbial and chemical processes. 'The role of P in the productivity in systems and in the eutrophication process has initiated a large number of studies to the behaviour ...
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ژورنال
عنوان ژورنال: Canadian Journal of Soil Science
سال: 2006
ISSN: 0008-4271,1918-1841
DOI: 10.4141/s05-072