Phosphorus pollution in Xingyun lake has become more and more serious in recent ten years.The distribution of phosphorites and phosphorus chemical industries in Xingyun lake watershed was investigated,at the same time,the water quality of the important tributaries was carried out.The results illustrated that the amount of phosphorus entering into Xingyun lake caused by phosphorite exploitation and processing was 46.6 ton per year,of which 84% was from Luosipu river watershed.Therefore,reducing the loss of p...