Advancement in Research on Pollutants Producing and Discharging Coefficients of Livestock and Poultry Breeding Industry in China

How to calculate discharge of pollutants from the livestock and poultry breeding industry is critical to judgment of environment situation as well as planning and decision-making for the environment, and the calculation is an important basic datum for designing livestock and poultry breeding pollution control projects. Pollutants producing and discharging coefficients are important basic data in the study of environment, and can be used as a fairly objective approach to calculation of pollutants discharge from the industry. The recent researches on pollutants producing and discharging coefficients of the livestock and poultry breeding industry in China are reviewed.The development courses, measuring methods and measurements of the coefficients in different regions of the country are collated systematically for comparison.Typical applications and improvements in the researches are summarized, and in the end the progresses in future researches in this field is forecasted.