The role of diet in phosphorus demand

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The role of diet in phosphorus demand
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Over the past 50 years, there have been major changes in human diets, including a global average increase in meat consumption and total calorie intake. We quantified how changes in annual per capita national average diets affected requirements for mined P between 1961 and 2007, starting with the per capita availability of a food crop or animal product and then determining the P needed to grow the product. The global per capita P footprint increased 38% over the 46 yr time period, but there was considerable variability among countries. Phosphorus footprints varied between 0.35 kg P capita−1 yr−1 (DPR Congo, 2007) and 7.64 kg P capita−1 yr−1 (Luxembourg, 2007). Temporal trends also differed among countries; for example, while China's P footprint increased almost 400% between 1961 and 2007, the footprints of other countries, such as Canada, decreased. Meat consumption was the most important factor affecting P footprints; it accounted for 72% of the global average P footprint. Our results show that dietary shifts are an important component of the human amplification of the global P cycle. These dietary trends present an important challenge for sustainable P management.

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their bones and it comes from the plants animals that we because it's an essentially treat it as a
fertilizer we use in agricultural production to
ensure high yields the PB fertilizer
mostly comes from minds and that it is not available be source in addition P is
concentrated in deposits unevenly across the globe one's P is applied to fields some goes
into crops and then into animals but a lot of
peace is lost along the way and this last Peking
cause eutrification on-street here we look at how changes in national diets across the world from
1961 to 2007
effects requirements of my key we did so by
calculating the peaceful part which is the average amount of
mind he required to produce the food consumed per capita for anyone be summoned I composition
for every country in every year total will will
keep requirements to produce food went up between 1961 in 2007 in her because population which represent here as a dotted line were multiplied global population by the 1961 average before print a constant I it's an area now if we consider diet changes in population growth together the black right here we consider 2 requirements went up even more shearson died accounted for almost 20 per cent of the increase in demand of mine key between 1961 in 2007 the gold repair went from 1 comma decimal 9 2 2 comma decimal 6 kilograms p per capita per year still people Prince very around the globe
in 1961 mediated its variability or North America Shane'' and most of Europe and some parts of South America for very high in red were most of Asia and Africa tremendously low in yellow changes through time were also different chain increased its before part for 100 per cent the most countries with very high P for prints remained very high in 2007 the P for Print vary between points the kilograms the p per capita pre year in the Congo all we had to 7 comma decimal 6 4 kilograms of p per capita and Luxemburg here we can see the
average the footprint of a person in a selection of countries and the proportionate to the P for Print made up of meat eggs and dairy in black internationals fruits in queens in white not all their territories traces having equal impact on P for Print volutes me egg dairy consumption account for the majority of an individual's footprint and thus countries with higher meat consumption have a higher P 4 per about 70 per cent of the global average dietary P for Print between 1961 in 2007 was due to the consumption of animal-based food
groups and peace is the most p intense assault hi d footprints are correlated with
wealth and development here we can see how human development index on the x-axis and 2074 print values which Europe is that of the log of the P for Print value I have a positive linear relationship Our results show the dietary
shifts are an important component of the human amplification of the global peace cycle this may mean that future meat consumption could play an important role in the demand for key
resources decreasing the consumption in already high P for Print countries could play an important role in sustainable key management strategies in addition to increasing efficiency and recycling of P throughout the food chain