环太湖不同性质河流水体磷的时空分布特征  

Spatial and Temporal Distribution Characteristics of Different Forms of Phosphorus in Three Sorts of Rivers around Lake Taihu

作　　者：高永霞[1,2] 宋玉芝[2,3] 于江华[1,2] 朱广伟[4] 

机构地区：[1]南京信息工程大学环境科学与工程学院,南京210044 [2]大气环境与装备技术协同创新中心,南京210044 [3]南京信息工程大学应用气象学院,南京210044 [4]中国科学院南京地理与湖泊研究所国家重点实验室,南京210008

出　　处：《环境科学》2016年第4期1404-1412,共9页Environmental Science

基　　金：国家自然科学基金项目(41471446);江苏高校优势学科建设工程项目

摘　　要：为了解不同性质河流对太湖水体富营养化的影响,于2009年2月(枯水期)、2009年5月(平水期)、2009年8月(丰水期)对环太湖三类9条河流中不同形态磷的沿程和时间变化特征进行了研究.结果表明,总磷(TP)、溶解性总磷(DTP)和溶解性反应磷(SRP)质量浓度随枯、平、丰水期而呈降低趋势,可酶解磷(EHP)质量浓度随着枯、平、丰水期藻类生物量的升高而升高.受生活污水影响的河流水体中各形态磷的质量浓度都是最高的,但由于此类河流从上游到下游水体自净能力很好,其对太湖富营养化的影响最小.受工业废水影响河流在与太湖交界处各形态磷的质量浓度最大,对太湖富营养化的影响也最大.入湖河流的EHP质量浓度多数情况下远远高于SRP质量浓度,EHP对太湖蓝藻的暴发起关键性作用.Different forms of phosphorus from the upper reaches of river to lower reaches of river in nine rivers were analyzed to clarify the pollution characteristics of industrial effluent,agriculture effluent and sanitary wastewater to Lake Taihu in February（ low water period）,May（ average water period） and August（ abundant water period） of 2009. The results showed that total phosphorus（ TP）,dissolved total phosphorus（ DTP） and soluble reactive phosphorus（ SRP） mass concentration all showed decreasing trend while enzymatic phosphorus（ EHP） mass concentration increased with the increase of algal biomass from low water period to abundant water period. Mass concentrations of several forms of phosphorus were all the highest in the rivers impacted by sanitary wastewater,but sanitary wastewater＇s self-purification capacity from the upper reaches of river to lower reaches of river was the best,and the pollution to Lake Taihu was the lowest. Pollution from rivers impacted by industrial effluent was the highest. Mass concentration of EHP was higher than that of SRP in most cases,so EHP played an important role in Cyanbacterial harmful algal blooms events in Lake Taihu.

关 键 词：太湖 河流 形态磷 时空分布 枯水期 平水期 丰水期 

分 类 号：X522[环境科学与工程—环境工程]