This data frame contains the parameters for each manure management system necessary to calculate the amount of N in urine and dung deposited by grazing animals on pasture, range, and paddock given a matrix containing the animal populations in each manure managment system).
annual average N excretion per head of species/category t in the country (or region), kg N animal-1 yr-1 (see Chapter 10, Section 10.5)
fraction of total annual N excretion for each livestock species/category t that is deposited on pasture, range and paddock (see Chapter 10, Section 10.5)
You may use this example data frame to enter the given parameters for each system.
Joshua Perlman and Robert Hijmans
2006 IPCC Guidelines for National Greenhouse Gas Inventories, Volume 4 Agriculture, Forestry and Other Land Use http://www.ipcc-nggip.iges.or.jp/public/2006gl/index.html