京蒙沙源区水库大气磷干、湿沉降污染特征
发布时间：2019-03-31 14:14
【摘要】：为阐明典型沙源区水库大气磷干、湿沉降的污染特征及其对水域磷素污染的贡献,为水库富营养化治理提供科学依据,以京蒙沙源区大河口水库库区为研究区,于2014年沿水库岸边布设12个大气沉降监测站点,采集干、湿沉降样品,测定干、湿沉降中总磷(TP)浓度,计算全年各月大气TP干、湿沉降通量和年入库TP污染负荷量.结果表明:研究区大气干、湿沉降季节差异显著,全年各月TP干沉降通量变化范围为4.89~35.76 kg/(km~2·月),主要集中在春季4月和秋季10月.最大TP干沉降通量出现在春季风沙最为严重的4月;湿沉降主要集中在夏季(6—8月),最大TP湿沉降通量出现在降雨量最大的8月,为28.88 kg/(km~2·月),且TP湿沉降通量与降雨量呈显著正相关.2014年大气TP沉降入库污染负荷量为0.719 t,占同期滦河和吐力根河两条河流入库TP污染负荷比率为51.17%,成为影响和限制大河口水库磷营养盐水平的重要源项之一.
[Abstract]:In order to clarify the pollution characteristics of atmospheric phosphorus drying and wet deposition of reservoirs in typical Shayuan area and their contribution to phosphorus pollution in water areas, and to provide scientific basis for reservoir eutrophication treatment, the Dahekou Reservoir area of Shayuan District, Beijing and Mongolia, is taken as the study area. In 2014, 12 monitoring stations were set up along the bank of the reservoir to collect dry and wet deposition samples, to measure the total phosphorus (TP) concentration in dry and wet deposition, and to calculate the dry and wet deposition fluxes of TP and the annual TP pollution load in each month of the year. The results show that there are significant seasonal differences between dry and wet deposition in the study area. The variation range of TP dry deposition flux in every month of the year is 4.89 脳 35.76 kg/ (km~ February 路month), mainly in April in spring and October in autumn. The maximum dry deposition flux of TP occurred in April, which was the most serious sand storm in spring. The wet deposition mainly occurred in summer (June-August), and the largest TP wet deposition flux occurred in August, when the rainfall was the largest, was 28.88 kg/ (km~ February 路month). The wet deposition flux of TP was significantly positively correlated with rainfall. In 2014, the pollution load of atmospheric TP deposition into the reservoir was 0.719 t, accounting for 51.17% of the TP pollution load ratio of Luanhe River and Turigen River in the same period. It has become one of the important sources to influence and limit the phosphorus nutrient level in Dahekou Reservoir.
【作者单位】： 内蒙古农业大学水利与土木建筑工程学院;
【基金】：国家自然科学基金项目(51369020,51669023) 内蒙古自然科学基金项目(2012MS0614)联合资助
【分类号】：X51;X524
[Abstract]:In order to clarify the pollution characteristics of atmospheric phosphorus drying and wet deposition of reservoirs in typical Shayuan area and their contribution to phosphorus pollution in water areas, and to provide scientific basis for reservoir eutrophication treatment, the Dahekou Reservoir area of Shayuan District, Beijing and Mongolia, is taken as the study area. In 2014, 12 monitoring stations were set up along the bank of the reservoir to collect dry and wet deposition samples, to measure the total phosphorus (TP) concentration in dry and wet deposition, and to calculate the dry and wet deposition fluxes of TP and the annual TP pollution load in each month of the year. The results show that there are significant seasonal differences between dry and wet deposition in the study area. The variation range of TP dry deposition flux in every month of the year is 4.89 脳 35.76 kg/ (km~ February 路month), mainly in April in spring and October in autumn. The maximum dry deposition flux of TP occurred in April, which was the most serious sand storm in spring. The wet deposition mainly occurred in summer (June-August), and the largest TP wet deposition flux occurred in August, when the rainfall was the largest, was 28.88 kg/ (km~ February 路month). The wet deposition flux of TP was significantly positively correlated with rainfall. In 2014, the pollution load of atmospheric TP deposition into the reservoir was 0.719 t, accounting for 51.17% of the TP pollution load ratio of Luanhe River and Turigen River in the same period. It has become one of the important sources to influence and limit the phosphorus nutrient level in Dahekou Reservoir.
【作者单位】： 内蒙古农业大学水利与土木建筑工程学院;
【基金】：国家自然科学基金项目(51369020,51669023) 内蒙古自然科学基金项目(2012MS0614)联合资助
【分类号】：X51;X524
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