The geochemical transformation of soils by agriculture and its dependence on soil erosion: An application of the geochemical mass balance approach. Yoo, K., Fisher, B., Ji, J., Aufdenkampe, A., & Klaminder, J. Science of The Total Environment, 521–522:326–335, July, 2015. 00003
The geochemical transformation of soils by agriculture and its dependence on soil erosion: An application of the geochemical mass balance approach [link]Paper  doi  abstract   bibtex   
Agricultural activities alter elemental budgets of soils and thus their long-term geochemical development and suitability for food production. This study examined the utility of a geochemical mass balance approach that has been frequently used for understanding geochemical aspect of soil formation, but has not previously been applied to agricultural settings. Protected forest served as a reference to quantify the cumulative fluxes of Ca, P, K, and Pb at a nearby tilled crop land. This comparison was made at two sites with contrasting erosional environments: relatively flat Coastal Plain in Delaware vs. hilly Piedmont in Pennsylvania. Mass balance calculations suggested that liming not only replenished the Ca lost prior to agricultural practice but also added substantial surplus at both sites. At the relatively slowly eroding Coastal Plain site, the agricultural soil exhibited enrichment of P and less depletion of K, while both elements were depleted in the forest soil. At the rapidly eroding Piedmont site, erosion inhibited P enrichment. In similar, agricultural Pb contamination appeared to have resulted in Pb enrichment in the relatively slowly eroding Coastal Plain agricultural soil, while not in the rapidly eroding Piedmont soils. We conclude that agricultural practices transform soils into a new geochemical state where current levels of Ca, P, and Pb exceed those provided by the local soil minerals, but such impacts are significantly offset by soil erosion.
@article{yoo_geochemical_2015,
	title = {The geochemical transformation of soils by agriculture and its dependence on soil erosion: {An} application of the geochemical mass balance approach},
	volume = {521–522},
	issn = {0048-9697},
	shorttitle = {The geochemical transformation of soils by agriculture and its dependence on soil erosion},
	url = {https://www.sciencedirect.com/science/article/pii/S0048969715003599},
	doi = {10.1016/j.scitotenv.2015.03.084},
	abstract = {Agricultural activities alter elemental budgets of soils and thus their long-term geochemical development and suitability for food production. This study examined the utility of a geochemical mass balance approach that has been frequently used for understanding geochemical aspect of soil formation, but has not previously been applied to agricultural settings. Protected forest served as a reference to quantify the cumulative fluxes of Ca, P, K, and Pb at a nearby tilled crop land. This comparison was made at two sites with contrasting erosional environments: relatively flat Coastal Plain in Delaware vs. hilly Piedmont in Pennsylvania. Mass balance calculations suggested that liming not only replenished the Ca lost prior to agricultural practice but also added substantial surplus at both sites. At the relatively slowly eroding Coastal Plain site, the agricultural soil exhibited enrichment of P and less depletion of K, while both elements were depleted in the forest soil. At the rapidly eroding Piedmont site, erosion inhibited P enrichment. In similar, agricultural Pb contamination appeared to have resulted in Pb enrichment in the relatively slowly eroding Coastal Plain agricultural soil, while not in the rapidly eroding Piedmont soils. We conclude that agricultural practices transform soils into a new geochemical state where current levels of Ca, P, and Pb exceed those provided by the local soil minerals, but such impacts are significantly offset by soil erosion.},
	urldate = {2017-02-07},
	journal = {Science of The Total Environment},
	author = {Yoo, Kyungsoo and Fisher, Beth and Ji, Junling and Aufdenkampe, Anthony and Klaminder, Jonatan},
	month = jul,
	year = {2015},
	note = {00003},
	keywords = {Anthropocene, Calcium, Chemical weathering, Fertilizer, Geochemical mass balance, Liming, Phosphorous, Soil erosion},
	pages = {326--335},
}

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