@article {JRN55264,
	title = {Manureshed delineation via analysis of county-level data from IPNI-NuGIS and USDA-NASS(2012)},
	year = {2020},
	abstract = {Nutrient recycling is fundamental to sustainable agricultural systems, but few mechanisms exist to ensure that surplus manure nutrients from animal feeding operations are transported for use on nutrient-deficient croplands. As a result, manure nutrients concentrate in locations where they can threaten environmental health and devalue manure as a fertilizer resource. This data set is from a study advances the concept of the {\textquotedblleft}manureshed{\textquotedblright} {\textendash} the lands surrounding animal feeding operations onto which manure nutrients can be redistributed to meet environmental, production, and economic goals. Manuresheds can be managed at multiple scales, for example, on farms with both animals and crops, among animal farms and crop farms within a county, or even among animal farms and crop farms in distant counties. With a focus on redistribution among counties, we classified the 3109 counties of the contiguous United States by their capacity to either supply manure phosphorus (P) and nitrogen (N) from confined livestock production ({\textquotedblleft}sources{\textquotedblright}) or to assimilate and remove excess P and N via crops ({\textquotedblleft}sinks{\textquotedblright}) [see data for N tonnes, P tonnes, N kg/ha, P kg/ha]. Manure nutrient source counties were identified in 40 of the 48 states, with a substantial concentration in the southern US. Source counties for manure P greatly outnumbered source counties for manure N (390 vs. 100), and 99 of the 100 manure N source counties were also source counties for manure P. Conversely, sink counties for manure N outnumbered sink counties for manure P (2766 vs. 2317). We used the P balances of the source and sink counties to delineate four manuresheds dominated by various combinations of confined hog, poultry, dairy, and beef industries [see data for Manuresheds (tonnes)]. The four manuresheds differed in the transport distances needed to assimilate excess manure P from their respective source areas (from 147 {\textpm} 51 km for a beef dominated manureshed to 368 {\textpm} 140 km for a poultry dominated manureshed), highlighting the need for systems-level strategies to promote manure nutrient recycling that operate across local, county, regional, and national scales.},
	keywords = {Agrosystems \& Environment, Animals \& Livestock, Biogeeochemistry, GIS Data and Images, Land cover/use, management, Maps \& Multimedia, nutrients, Organic Matt, Plants \& Crops, soil},
	doi = {https://doi.org/10.15482/USDA.ADC/1518435},
	author = {S. Spiegal and Peter J. A. Kleinman and Dinku Endale and Ray Bryant and Curtis Dell and Sarah Goslee and Meinen, Robert J and Colton K Flynn and J. M. Baker and Dawn M. Browning and Gregory McCarty and S. Bittman and Jennifer Carter and Michael Cavigelli and Emily Duncan and Prasanna Gowda and Xia Li and G.E. Ponce and Raj, Cibin and Maria Silveira and Douglas Smith and Dan Arthur and Yang, Qichun and Nezat, Caryn and Bruce Vandenberg}
}
