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| 铜陵市义安区农业面源污染现状调查与评价 |
| Investigation and Evaluation of Agricultural Non-point Source Pollution in Yi，an District， Tongling |
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| DOI： |
| 中文关键词: 农业面源 污染调查 等标污染负荷法 铜陵市义安区 |
| 英文关键词: Agricultural non-point source Pollution investigation Equal standard pollution load method Yi,an District, Tongling |
| 基金项目:安徽省农业可持续发展专项基金资助项目（2020558）；铜陵市义安区长江经济带农业面源污染治理基金资助项目（2019-340721-05-01-005999） |
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| 中文摘要: |
| 通过对铜陵市义安区7个乡镇的农田、养殖及农村生活污染源的调查，采用等标污染负荷法进行评价，应用ArcGIS软件作聚类分析，研究该区域农业面源污染来源及其负荷空间特征。结果表明：农业面源污染排放量为3 739.50 t，农村生活、畜禽养殖为重点污染源，其排放量分别为1 705.36 t、1 55855 t，污染负荷分别为45.61%、41.67%。在COD、TN、TP 3个主要评价因子中重点污染物是COD，其次是TN，污染负荷率分别为87.55％、10.95%。在各乡镇中西联镇、天门镇、顺安镇的农业面源污染排放量较高，分别为818.86 t、772.26 t、740.12 t，污染负荷分别为21.90%、20.65%、19.79%。 |
| 英文摘要: |
| Through the investigation of farmland， aquaculture and rural domestic pollution sources in 7 towns in Yi，an District， Tongling， equal standard pollution load method was used for evaluation， and ArcGIS software was used for cluster analysis to study the source of agricultural non-point pollution and the spatial characteristics of pollution load in this area. The results showed that the emission from agricultural non-point source was 3 739.50 t. Rural living， livestock and poultry breeding were the major sources of pollution， with emissions of 1 705.36 t and 1 558.55 t， and pollution loads of 45.61% and 41.67%， respectively. Among the three main evaluation factors of COD， TN and TP， COD was the key pollutant， followed by TN， and the pollution load rates were 87.55% and 10.95%, respectively. Among the townships， Xilian Town， Tianmen Town and Shun，an Town had high agricultural non-point source pollution emissions， which were 818.86 t， 772.26 t and 740.12 t, respectively， and the pollution loads were 21.90%， 20.65% and 19.79%, respectively. |
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