苏州太湖水体氮、磷含量及形态组成分析

Analysis of nitrogen and phosphorus content and form composition in Taihu Lake, Suzhou

研究基于2016年10~12月对苏州太湖水域中氮、磷营养盐浓度的水质监测,分析了太湖水域各种形态氮、磷营养盐的含量、形态组成和变化分布特点。苏州太湖水域中总氮以溶解态氮为主,平均占比为77.7%,溶解态无机氮中以硝酸盐氮为主,全区水体中总磷以溶解态磷为主,占比为54.6%,溶解态磷中以溶解态无机磷为主。不同区域各种形态分配比例不一,并且由于环境条件复杂多变,各种形态的浓度变化范围较大。分析成果可为太湖水环境治理和恢复提供可靠的背景资料和技术支撑。

Based on the water quality monitoring of nitrogen and phosphorus concentrations in Taihu waters of Suzhou from October to December 2016, the contents, form composition and distribution characteristics of various forms of nitrogen and phosphorus nutrients in Taihu waters were analyzed. The total nitrogen in the Taihu waters of Suzhou was mainly dissolved nitrogen, with an average ratio of 77.7%. And the main dissolved inorganic nitrogen was nitrate nitrogen. The total phosphorus in the whole area was mainly dissolved in dissolved phosphorus, with a proportion of 54.6%, and the dissolved phosphorus was mainly composed of dissolved inorganic phosphorus. The proportion of different forms of distribution varies in different regions, and because of the complex and changeable environmental conditions, the concentration of various forms varies greatly. The analysis results could provide reliable background information and technical support for water environment governance and restoration in Taihu Lake.