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首页> 外文期刊>Journal of marine science and technology >LONG-TERM REMOTE MONITORING THE EFFECTS OF RAINFALL AND AGRICULTURAL NON-POINT SOURCES POLLUTION ON THE SURFACE WATERS QUALITY IN LAKE TAIHU
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LONG-TERM REMOTE MONITORING THE EFFECTS OF RAINFALL AND AGRICULTURAL NON-POINT SOURCES POLLUTION ON THE SURFACE WATERS QUALITY IN LAKE TAIHU

机译：长期监测雨水和农业非点源污染对太湖市地表水水质的影响

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摘要

The transport of pollutants into freshwater resources depends on the relationships between pesticide/fertilizer application, local topography and rainfall. These relationships are investigated at Lake Taihu, China, where the cropland around the basin is devoted to growing rice. Our aim is to study the effects of the rainfall and non-point source contamination on surface water quality, with a specific focus on Nitrate Potassium Permanganate Chemical. Oxidant (CODMn) and Nitrates (NH3-N), and using satellite remote sensing to construct a pollution estimation model by using satellite data and surface data from 7 monitoring station surveys in 2008-2015. Comparing measured values and remote sensing predicted values, the average of CODMn relative deviation is -0.775 and the average of NH3-N relative deviation is -0.030, both within a reasonable range. Experimental data shows that the lower concentrations of NH3-N occurred when rainfalls are high, the CODMn's temporal and spatial distributions have high variability, and the interaction between seasons and rainfall rate explains variability of NH3-N and CODMn concentrations in surface waters.
机译：污染物向淡水资源的迁移取决于农药/肥料的使用，当地地形和降雨之间的关系。这些关系在中国太湖进行了研究，该盆地周围的农田专门种植水稻。我们的目的是研究降雨和面源污染对地表水水质的影响，特别是硝酸盐高锰酸钾化学制品。氧化剂（CODMn）和硝酸盐（NH3-N），并利用卫星遥感技术，利用来自2008-2015年7个监测站调查的卫星数据和地面数据，建立污染估算模型。比较测量值和遥感预测值，CODMn相对偏差的平均值为-0.775，NH3-N相对偏差的平均值为-0.030，均在合理范围内。实验数据表明，降雨多时NH3-N的浓度较低，CODMn的时空分布具有较大的变异性，季节和降雨率之间的相互作用说明了地表水中NH3-N和CODMn浓度的变异性。

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