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首页> 外文期刊>Environmental Monitoring and Assessment >Monitoring and assessment of surface water quality in Taquari-Antas Watershed, South Brazil-region with intensive pig farming
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Monitoring and assessment of surface water quality in Taquari-Antas Watershed, South Brazil-region with intensive pig farming

机译：巴西南部地区集约化养猪的塔夸里-安塔斯流域地表水质量的监测和评估

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摘要

Pig farming is one of the human activities carried out to meet the increasing food demand by the increasing population. South Brazil is the region with most intensive pig farming in the country, exerting pressure on the water and soil environments by the relevant pollutant emissions. Therefore, the main objective of this work was to assess pig farming pollution by monitoring superficial water qualities of the Taquari-Antas Watershed in South Brazil. The study area is about 8062 km(2) (south latitude 292,614, 282,624 and west longitude 520,802, 504,554). In 2014, there were 861 pig farmers and 739,858 animals were slaughtered. Samples were collected bimonthly from 13 spots during 2 years of monitoring. The main analysis included the determination of the water quality index (WQI)-a nine physicochemical and microbiological parameter index-and the trophic state index (TSI), which gives a trophic degree based on phosphorous and chlorophyll-a concentration to assess the impacts of the pig farming on superficial water of the region. The results suggest that the regions with high concentration of finishing stage farms present a higher risk to water quality. A distance of 4 km between different spots was enough to detect a significant decrease in the WQI. The WQI was found ranging from "regular" to "good" (62.77 and 78.95). The TSI were found to be mesotrophic at every spot during the entire period of the study.
机译：养猪是人类为满足日益增长的人口不断增长的粮食需求而开展的一项活动。巴西南部是该国养猪业最密集的地区，其相关污染物排放对水和土壤环境造成压力。因此，这项工作的主要目的是通过监测巴西南部Taquari-Antas流域的表层水质来评估养猪场污染。研究区域约为8062 km（2）（南纬292,614、282,624和西经520,802、504,554）。 2014年，共有861位养猪户和739,858只动物被屠宰。在监测的2年中，每月从13个点每两个月收集一次样品。主要分析包括确定水质指数（WQI）-九种理化和微生物参数指数-和营养状态指数（TSI），其根据磷和叶绿素a的浓度给出营养度，以评估水质影响。在该地区表层水域养猪。结果表明，肥育阶段集中的地区对水质的风险更高。不同点之间的4 km距离足以检测到WQI的显着下降。发现WQI范围从“常规”到“良好”（62.77和78.95）。在整个研究过程中，发现每个地方的TSI都是中营养的。

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