Research on Nitrogen and Phosphorus Release from Sediments in Small Inland Freshwater Lakes

Indoor simulation method was applied to study the characteristics of nitrogen and phosphorus release from sediments in small freshwater lake Huangjia Lake. Meanwhile, the grading determination method of inorganic phosphate was applied to study the existing form of inorganic phosphate in sediments. The results showed that sedimentary environment in various areas of Huangjia Lake would have influence on release of nitrogen and phosphorus. At the same time, the temperature and pH value were proved to have obvious influence on release of nitrogen and phosphorus.