Crop-livestock production systems are the largest cause of human alteration of the global nitrogen (N) and phosphorus (P) cycles. Our comprehensive spatially explicit inventory of N and P budgets in livestock and crop production systems shows that in the beginning of the 20th century, nutrient budgets were either balanced or surpluses were small; between 1900 and 1950, global soil N surplus almost doubled to 36 trillion grams (Tg)·y-1 and P surplus increased by a factor of 8 to 2 Tg·y-1. Between 1950 and 2000, the global surplus increased to 138 Tg·y-1 of N and 11 Tg·y-1 of P. Most surplus N is an environmental loss; surplus P is lost by runoff or accumulates as residual soil P. The International Assessment of Agricultural Knowledge, Scienc...
Given the important role of nitrogen input from livestock systems in terrestrial nutrient cycles and...
Worldwide increases in nitrogen (N) inputs to croplands have been and will continue to be an importa...
Given the important role of nitrogen input from livestock systems in terrestrial nutrient cycles and...
Crop-livestock production systems are the largest cause of human alteration of the global nitrogen (...
The cycles of several key nutrients have been substantially altered by agricultural activities over ...
Animal production systems provide nutritious food for humans, income and survivability for numerous ...
International audienceThe application of phosphorus (P) fertilizer to agricultural soils increased b...
Nitrogen (N) limits crop and grass production, and it is an essential component of dietary proteins....
Nitrogen (N) limits crop and grass production, and it is an essential component of dietary proteins....
The Millennium Ecosystem Assessment scenarios for 2000 to 2050 describe contrasting future developme...
International audienceProduction and application to soils of manure excreta from livestock farming s...
Data for the historical years 1970 and 1995 and the FAO-Agriculture Towards 2030 projection are used...
Given the important role of nitrogen input from livestock systems in terrestrial nutrient cycles and...
Worldwide increases in nitrogen (N) inputs to croplands have been and will continue to be an importa...
Given the important role of nitrogen input from livestock systems in terrestrial nutrient cycles and...
Crop-livestock production systems are the largest cause of human alteration of the global nitrogen (...
The cycles of several key nutrients have been substantially altered by agricultural activities over ...
Animal production systems provide nutritious food for humans, income and survivability for numerous ...
International audienceThe application of phosphorus (P) fertilizer to agricultural soils increased b...
Nitrogen (N) limits crop and grass production, and it is an essential component of dietary proteins....
Nitrogen (N) limits crop and grass production, and it is an essential component of dietary proteins....
The Millennium Ecosystem Assessment scenarios for 2000 to 2050 describe contrasting future developme...
International audienceProduction and application to soils of manure excreta from livestock farming s...
Data for the historical years 1970 and 1995 and the FAO-Agriculture Towards 2030 projection are used...
Given the important role of nitrogen input from livestock systems in terrestrial nutrient cycles and...
Worldwide increases in nitrogen (N) inputs to croplands have been and will continue to be an importa...
Given the important role of nitrogen input from livestock systems in terrestrial nutrient cycles and...